CS32 Energy Code Feasibility Study in Brockton, Massachusetts
Energy code feasibility study for a 46-unit 5-Story Multifamily Building | 4 residential stories over a podium. in Massachusetts. Compares multiple design paths. Recommended: SPRAY. View full study.
- Study Type
- Energy Code Feasibility Study
- State
- Massachusetts
- Units
- 46
- Building Type
- 5-Story Multifamily Building | 4 residential stories over a podium.
- Fuel Type
- All-Electric
- Recommended Path
- SPRAY
Goal
To find the most cost-effective compliance path, this report isolates energy code related costs from total construction. We use real MA bid data from vendors & clients to estimate cost, with all recommendations confirmed by detailed energy modeling.
Project
- Brockton, MA 02301
- 46 Units | 45,920 sqft
- 5-Story Multifamily Building | 4 residential stories over a podium.
- New Construction | Stretch Code | HERS ≤ 55 | All Electric
Overview
Read This: This report compares different ways you can build the project and meet energy code, looking at both cost and incentives, with the ultimate goal as finding the most affordable path.
- The overview outlines the key differences between each of the paths we show in this report and why we recommend the one we picked over the others.
- The recommended design section is where we share the requirements and incentives for the path we think is best based on affordability.
- The path comparison section shows the detailed requirements and incentives for each path we compared, basically showing our work if you want to dig in.
DESIGNED (Not recommended): This path meets code and also qualifies for Energy Star MFNC v1.2 which unlocks higher tier incentives. This path uses heat pump water heaters as a means of making up for a poorly insulated podium. This is proven in the energy model when you compare the 2nd floor HERS scores, ranging from 50-55, to the floor 3-5 HERS scores ranging from 39-45. This design is 18-29% more efficient than the required score of 55 in almost 78% of the building resulting in a cost per square foot increase of $13.31/sqft for an extra $0.55/sqft in incentives. We don’t recommend using this design.
DESIGNED v2 (Not recommended): This path meets code and meets the HERS requirements for the base Mass Save incentives. This path helps reduce cost from the DESIGNED path by eliminating heat pump water heaters in floors 3-5. This causes the floor 2 units to be separated into a different sample set ending up with 10 additional units tested, increasing the cost of the HERS rating but losing the price tag of the HPWHs.
SPRAY (Recommended): This path meets code and also qualifies for Energy Star MFNC v1.2 which unlocks higher tier incentives. Three key changes were made, the HPWH were swapped to traditional electric resistance water heaters, the ducted heat pumps were swapped to PTACs, and the insulation under the podium changed from spray foam in the cavity to a continuous 5” layer of insulation applied evenly over the cavities and studs.. These differences resulted in an estimated $13.31/sqft less than the current design while only losing $0.55/sqft in incentives. While this is not the lowest cost path, the cost increase is negligible and requires less intense design changes than the DROP path.
DROP (Great alternative): This path meets code and also qualifies for Energy Star MFNC v1.2 which unlocks higher tier incentives. Three key changes were made, the HPWH were swapped to traditional electric resistance water heaters, the ducted heat pumps were swapped to PTACs, and the insulation under the podium changed from spray foam in the cavity to a drop ceiling with batt insulation resting on it. These differences resulted in an estimated $13.31/sqft less than the current design while only losing $0.55/sqft in incentives. While this is the lowest cost path, it offers small financial upside to the SPRAY path and requires more intense design changes.
Note: Upon request, we researched removing the ERV system and replacing it with local exhausts in the bathroom & kitchen, and meeting the ERV requirements via built in capabilities from the PTAC units. Unfortunately we couldn’t locate any accessory or PTAC unit that meets the required efficiency metrics.
Recommended Design
This section outlines the design requirements, product recommendations, and incentives for the design that we believe will be the most affordable path to meeting energy code.
Recommended Design - Incentives
SPRAY: $104,035
- MassSave Multifamily High Rise Program Energy Star Tier ($80,400): You get this rebate for having your building(s) certified for the Energy Star MFNC v1.2 program. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
- MassSave Multifamily High Rise Program Thermostat Adder ($4,600): You get this rebate for installing WIFI enabled programmable thermostats in each unit. This requires pre-approval via an application to be submitted before construction starts. This rebate comes 4 months after construction is complete.
- MassSave Passive House Feasibility Study ($5,000): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the charette taking place.
- IMPORTANT: The incentive is capped at 100% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
- MassSave Passive House Energy Model ($14,035): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the 1 hour meeting taking place.
- IMPORTANT: The incentive is capped at 75% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
Recommended Design - Units
Item | Detailed Specifications |
|---|---|
Exterior Walls | 2×6 wood studs R-21 batt or spray foam insulation. |
Floor Over Unconditioned Space | R-30 high density spray foam insulation 5" covering the cavity & studs. |
Rim Joists | R-21 batt or spray foam insulation. |
Roof | R-56 high density spray foam insulation in cavity. |
Windows | Fixed: U-0.26 / SHGC 0.39; Operable: U-0.27 / SHGC 0.26; |
Doors | Glazed: U-0.27 / SHGC 0.26; Opaque: U-0.21 (R-4.75); |
Air Sealing | Units: ≤0.30 CFM50 per sqft enclosure |
Space Conditioning | Ductless PTAC; Bedrooms: EER 12.5; COP 3.6; 9 kBtu/h (click here) Living Rooms: EER 11.5; COP 3.3; 12 kBtu/h (click here) |
Duct Sealing | N/A |
Mechanical Ventilation | ERV: 53, 66, 85 CFM, ≤ 1.8 CFM per Watt, 77-83% recovery; All Units; (click here) |
Local Mechanical Exhaust | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones, Kitchen (s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH Based on kitchen volume & ≤ 1.0 sone. Both: Exhaust directly outdoors, ENERGY STAR certified |
Thermostats | Programmable Thermostat (click here) |
DHW | Electric resistance tank heater In unit (UEF ≥0.93) (click here) |
Hot Water Piping | Hot water pipes insulated to R-3. |
Water Fixtures | Low flow fixtures (Lavatory: ≤1.5 GPM, Shower: ≤2.0 GPM) |
Appliances | ENERGY STAR Certified All Electric Appliances (Refrigerator) (Dishwasher) (Washer) (Dryer) |
Lighting | 100% high-efficacy (LED) |
Solar Ready | Exempt - solar radiation available to the building is not suitable for a solar-ready zone (click to see exemption reasoning). |
EV Ready | EV Charging Compliance: Provide EV Ready spaces for not less than 20% of the total parking spaces. Compliance may be achieved through any combination of the following options: Option 1: Standard Dedicated Level 2 Provide EV Ready infrastructure for at least 20% of parking spaces, where each space is served by its own dedicated 208/240V, 40-amp branch circuit. Option 2: DC Fast Charger Exception Exempt the garage from the 20% wiring requirement entirely by installing and activating a minimum of four (4) DC Fast Chargers, each rated at 150 kW or higher. Option 3: Level 1 Substitution Meet the EV Ready target by substituting standard Level 2 (208/240V) spaces with Level 1 (120V, 20-amp) spaces at a 3-to-1 ratio. |
Paperwork & Modeling | Energy model, 2021 IECC checklists, ENERGY STAR MFNC, and incentive documentation. |
Testing & Verification | Blower Door Test, Mechanical Ventilation Testing, Room Balancing, Predrywall & Final Inspection. |
Recommended Design - Common Areas
Item | Detailed Specifications |
|---|---|
Roof | R-56 high density spray foam insulation in cavity. |
Floor Over Unconditioned Space | R-30 high density spray foam insulation 5" covering the cavity & studs OR R-30 batt insulation resting on drop ceiling (click here). |
Exterior Wood Framed Wall | R-21 batt in cavity. |
Exterior Mass Wall | 2x4 wood-framed furring wall with R-13 batt insulation, installed against the interior face of a mass wall. |
Slab Insulation | R-15 Perimeter Insulation (2 ft depth) or R-10 fully insulated slab. |
Fixed Windows | U-0.30 / SHGC NR |
Operable Windows | U-0.32 / SHGC NR |
Glazed Entrance Door | U-0.60 / SHGC Follows standard Commercial SHGC |
Opaque Door | U-0.37 |
Space Conditioning | Option 1: Ducted heat pump minimum efficiency ratings SEER2 15.2 & HSPF2 7.8; Option 2: For all other heating and cooling types see Table 2 (page 5) of Energy Star MFNC v1.2 requirements (click here). Note: Electric resistance heating specified in common spaces and garages has a total heating capacity ≤ 12 kBtu/h (3.5 kW) per enclosed space and has automatic thermostatic controls (Energy Star requirement). |
Air Handler & Duct Location | 100% Inside Conditioned Space. |
Duct Sealing | Total Duct Leakage: The greater of ≤ 8 CFM25 per 100 sq. ft. of CFA or ≤ 80 CFM. |
Mechanical Exhaust for Common Spaces | Measured exhaust rates are ≥ ASHRAE 62.1-2010 rates. |
Mechanical Exhaust for Shared Garages | Where an exhaust system is installed in a shared garage, it is equipped with controls that sense CO and NO2; Measured exhaust rates are ≥ ASHRAE 62.1-2010 rates. |
Thermostats | Programmable |
DHW | Electric Resistance or Tankless Water Heater UEF ≥0.93 |
Water Fixtures | WaterSense Certified Fixtures |
Appliances | ENERGY STAR Certified All Electric Appliances |
Lighting | 100% LED Lighting |
Solar Ready | Exempt - solar radiation available to the building is not suitable for a solar-ready zone (click to see exemption reasoning). |
Electric Vehicle Ready | EV Charging Compliance: Provide EV Ready spaces for not less than 20% of the total parking spaces. Compliance may be achieved through any combination of the following options: Option 1: Standard Dedicated Level 2 Provide EV Ready infrastructure for at least 20% of parking spaces, where each space is served by its own dedicated 208/240V, 40-amp branch circuit. Option 2: DC Fast Charger Exception Exempt the garage from the 20% wiring requirement entirely by installing and activating a minimum of four (4) DC Fast Chargers, each rated at 150 kW or higher. Option 3: Level 1 Substitution Meet the EV Ready target by substituting standard Level 2 (208/240V) spaces with Level 1 (120V, 20-amp) spaces at a 3-to-1 ratio. |
Path Comparison
This section shows the detailed requirements and incentives for each path we compared, showing our work of how we determined the recommended path is the most affordable way of meeting energy code compliance.
Path Comparison - Incentives
DESIGNED: $131,485
- MassSave Multifamily High Rise Program Energy Star Tier ($80,400): You get this rebate for having your building(s) certified for the Energy Star MFNC v1.2 program. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
- MassSave Multifamily High Rise Program Thermostat Adder ($4,600): You get this rebate for installing WIFI enabled programmable thermostats in each unit. This requires pre-approval via an application to be submitted before construction starts. This rebate comes 4 months after construction is complete.
- MassSave Multifamily High Rise Program Heat Pump Water Heater Adder ($11,500): You get this rebate for installing heat pump water heaters in each unit. This requires pre-approval via an application to be submitted before construction starts. This rebate comes 4 months after construction is complete.
- MassSave Passive House Feasibility Study ($5,000): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the charette taking place.
- IMPORTANT: The incentive is capped at 100% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
- MassSave Passive House Energy Model ($16,185): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the 1 hour meeting taking place.
- IMPORTANT: The incentive is capped at 75% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
- DOER Alternative Energy Credits ($13,800): This rebate is received for installing APS Eligible air source heat pumps. There is an extensive process to get this incentive. It comes in the form of a check approximately 6-12 months after the heat pumps are installed and fully operational.
- IMPORTANT: Although an estimate is provided, this incentive can vary widely typically between $300-800 per heat pump. It’s based on expected kWh usage of the system as well as the market value of the alternative energy credits when sold.
DESIGNED v2: $91,900
- MassSave Multifamily High Rise Program Base Tier ($46,000): You get this rebate for having your building(s) HERS certified. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
- MassSave Multifamily High Rise Program Thermostat Adder ($4,600): You get this rebate for installing WIFI enabled programmable thermostats in each unit. This requires pre-approval via an application to be submitted before construction starts. This rebate comes 4 months after construction is complete.
- MassSave Multifamily High Rise Program Heat Pump Water Heater Adder ($2,500): You get this rebate for installing heat pump water heaters in each unit. This requires pre-approval via an application to be submitted before construction starts. This rebate comes 4 months after construction is complete.
- MassSave Passive House Feasibility Study ($5,000): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the charette taking place.
- IMPORTANT: The incentive is capped at 100% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
- MassSave Passive House Energy Model ($20,000): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the 1 hour meeting taking place.
- IMPORTANT: The incentive is capped at 75% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
- DOER Alternative Energy Credits ($13,800): This rebate is received for installing APS Eligible air source heat pumps. There is an extensive process to get this incentive. It comes in the form of a check approximately 6-12 months after the heat pumps are installed and fully operational.
- IMPORTANT: Although an estimate is provided, this incentive can vary widely typically between $300-800 per heat pump. It’s based on expected kWh usage of the system as well as the market value of the alternative energy credits when sold.
SPRAY: $104,035
- MassSave Multifamily High Rise Program Energy Star Tier ($80,400): You get this rebate for having your building(s) certified for the Energy Star MFNC v1.2 program. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
- MassSave Multifamily High Rise Program Thermostat Adder ($4,600): You get this rebate for installing WIFI enabled programmable thermostats in each unit. This requires pre-approval via an application to be submitted before construction starts. This rebate comes 4 months after construction is complete.
- MassSave Passive House Feasibility Study ($5,000): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the charette taking place.
- IMPORTANT: The incentive is capped at 100% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
- MassSave Passive House Energy Model ($14,035): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the 1 hour meeting taking place.
- IMPORTANT: The incentive is capped at 75% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
DROP: $104,035
- MassSave Multifamily High Rise Program Energy Star Tier ($80,400): You get this rebate for having your building(s) certified for the Energy Star MFNC v1.2 program. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
- MassSave Multifamily High Rise Program Thermostat Adder ($4,600): You get this rebate for installing WIFI enabled programmable thermostats in each unit. This requires pre-approval via an application to be submitted before construction starts. This rebate comes 4 months after construction is complete.
- MassSave Passive House Feasibility Study ($5,000): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the charette taking place.
- IMPORTANT: The incentive is capped at 100% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
- MassSave Passive House Energy Model ($14,035): You get this rebate for having a PHIUS feasibility study completed for your project & having a 1 hour charette with the design team and MassSave representative to review that study. This process must be completed before construction is complete. This rebate comes in the form of a check within 4 months of the 1 hour meeting taking place.
- IMPORTANT: The incentive is capped at 75% of the applicable service charge. Please note that receiving this benefit usually requires a modification to the standard billing structure.
Path Comparison - Net Cost Summary
Path | Total Cost $/sf | Total Incentives $/sf | Net $/sf |
|---|---|---|---|
DESIGNED | $52.00 | $2.95 | $49.05 |
DESIGNED v2 | $49.45 | $1.65 | $47.81 |
SPRAY | $39.49 | $2.40 | $37.09 |
DROP | $38.69 | $2.40 | $36.29 |
Path Comparison - Envelope
Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf |
|---|---|---|---|---|---|
Exterior Walls | DESIGNED | 2×6 wood studs R-21 batt or spray foam insulation. | $3.95 | $0.00 | $3.95 |
DESIGNED v2 | 2×6 wood studs R-21 batt or spray foam insulation. | $3.95 | $0.00 | $3.95 | |
SPRAY | 2×6 wood studs R-21 batt or spray foam insulation. | $4.40 | $0.00 | $4.40 | |
DROP | 2×6 wood studs R-21 batt or spray foam insulation. | $3.95 | $0.00 | $3.95 | |
Floor Over Unconditioned Space | DESIGNED | R-48 high density spray foam insulation in cavity. | $1.45 | $0.00 | $1.45 |
DESIGNED v2 | R-48 high density spray foam insulation in cavity. | $1.45 | $0.00 | $1.45 | |
SPRAY | R-30 high density spray foam insulation 5" covering the cavity & studs. | $1.20 | $0.00 | $1.20 | |
DROP | R-30 batt insulation resting on drop ceiling (click here). | $0.85 | $0.00 | $0.85 | |
Rim Joists | DESIGNED | R-21 batt or spray foam insulation. | $0.48 | $0.00 | $0.48 |
DESIGNED v2 | R-21 batt or spray foam insulation. | $0.48 | $0.00 | $0.48 | |
SPRAY | R-21 batt or spray foam insulation. | $0.48 | $0.00 | $0.48 | |
DROP | R-21 batt or spray foam insulation. | $0.48 | $0.00 | $0.48 | |
Roof | DESIGNED | R-49 high density spray foam insulation in cavity. | $3.65 | $0.00 | $3.65 |
DESIGNED v2 | R-49 high density spray foam insulation in cavity. | $3.65 | $0.00 | $3.65 | |
SPRAY | R-56 high density spray foam insulation in cavity. | $4.15 | $0.00 | $4.15 | |
DROP | R-56 high density spray foam insulation in cavity. | $4.15 | $0.00 | $4.15 | |
Windows | DESIGNED | Fixed: U-0.26 / SHGC 0.39; Operable: U-0.27 / SHGC 0.26; | $9.20 | $0.00 | $9.20 |
DESIGNED v2 | Fixed: U-0.26 / SHGC 0.39; Operable: U-0.27 / SHGC 0.26; | $9.20 | $0.00 | $9.20 | |
SPRAY | Fixed: U-0.26 / SHGC 0.39; Operable: U-0.27 / SHGC 0.26; | $9.20 | $0.00 | $9.20 | |
DROP | Fixed: U-0.26 / SHGC 0.39; Operable: U-0.27 / SHGC 0.26; | $9.20 | $0.00 | $9.20 | |
Doors | DESIGNED | Glazed: U-0.27 / SHGC 0.26; Opaque: U-0.21 (R-4.75); | $1.85 | $0.00 | $1.85 |
DESIGNED v2 | Glazed: U-0.27 / SHGC 0.26; Opaque: U-0.21 (R-4.75); | $1.85 | $0.00 | $1.85 | |
SPRAY | Glazed: U-0.27 / SHGC 0.26; Opaque: U-0.21 (R-4.75); | $1.85 | $0.00 | $1.85 | |
DROP | Glazed: U-0.27 / SHGC 0.26; Opaque: U-0.21 (R-4.75); | $1.85 | $0.00 | $1.85 | |
Air Sealing | DESIGNED | Units: ≤0.30 CFM50 per sqft enclosure | $1.35 | $0.00 | $1.35 |
DESIGNED v2 | Units: ≤0.30 CFM50 per sqft enclosure | $1.35 | $0.00 | $1.35 | |
SPRAY | Units: ≤0.30 CFM50 per sqft enclosure | $1.35 | $0.00 | $1.35 | |
DROP | Units: ≤0.30 CFM50 per sqft enclosure | $1.35 | $0.00 | $1.35 |
Path Comparison - Mechanical
Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf |
|---|---|---|---|---|---|
Space Conditioning | DESIGNED | Ducted split heat pump; SEER2 16.2; HSPF2 9.5; (Condenser) (Air Hander) | $12.45 | $0.30 | $12.15 |
DESIGNED v2 | Ducted split heat pump; SEER2 16.2; HSPF2 9.5; (Condenser) (Air Hander) | $12.45 | $0.00 | $12.45 | |
SPRAY | Ductless PTAC; Bedrooms: EER 12.5; COP 3.6; 9 kBtu/h (click here) Living Rooms: EER 11.5; COP 3.3; 12 kBtu/h (click here) | $3.55 | $0.00 | $3.55 | |
DROP | Ductless PTAC; Bedrooms: EER 12.5; COP 3.6; 9 kBtu/h (click here) Living Rooms: EER 11.5; COP 3.3; 12 kBtu/h (click here) | $3.55 | $0.00 | $3.55 | |
Duct Sealing | DESIGNED | Total Duct Leakage: The greater of ≤ 8 CFM25 per 100 sq. ft. of CFA or ≤ 80 CFM. | $0.65 | $0.00 | $0.65 |
DESIGNED v2 | Total Duct Leakage: The greater of ≤ 8 CFM25 per 100 sq. ft. of CFA or ≤ 80 CFM. | $0.65 | $0.00 | $0.65 | |
SPRAY | N/A | $0.00 | $0.00 | $0.00 | |
DROP | N/A | $0.00 | $0.00 | $0.00 | |
Mechanical Ventilation | DESIGNED | ERV: 53, 66, 85 CFM, ≤ 1.8 CFM per Watt, 77-83% recovery; All Units; (click here) | $2.85 | $0.00 | $2.85 |
DESIGNED v2 | ERV: 53, 66, 85 CFM, ≤ 1.8 CFM per Watt, 77-83% recovery; All Units; (click here) | $2.85 | $0.00 | $2.85 | |
SPRAY | ERV: 53, 66, 85 CFM, ≤ 1.8 CFM per Watt, 77-83% recovery; All Units; (click here) | $2.85 | $0.00 | $2.85 | |
DROP | ERV: 53, 66, 85 CFM, ≤ 1.8 CFM per Watt, 77-83% recovery; All Units; (click here) | $2.85 | $0.00 | $2.85 | |
Local Mechanical Exhaust | DESIGNED | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones, Kitchen (s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH Based on kitchen volume & ≤ 1.0 sone. Both: Exhaust directly outdoors, ENERGY STAR certified | $0.95 | $0.00 | $0.95 |
DESIGNED v2 | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones, Kitchen (s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH Based on kitchen volume & ≤ 1.0 sone. Both: Exhaust directly outdoors, ENERGY STAR certified | $0.95 | $0.00 | $0.95 | |
SPRAY | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones, Kitchen (s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH Based on kitchen volume & ≤ 1.0 sone. Both: Exhaust directly outdoors, ENERGY STAR certified | $0.95 | $0.00 | $0.95 | |
DROP | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones, Kitchen (s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH Based on kitchen volume & ≤ 1.0 sone. Both: Exhaust directly outdoors, ENERGY STAR certified | $0.95 | $0.00 | $0.95 | |
Thermostats | DESIGNED | Programmable Thermostat (click here) | $0.14 | $0.10 | $0.04 |
DESIGNED v2 | Programmable Thermostat (click here) | $0.14 | $0.10 | $0.04 | |
SPRAY | Programmable Thermostat (click here) | $0.14 | $0.10 | $0.04 | |
DROP | Programmable Thermostat (click here) | $0.14 | $0.10 | $0.04 |
Path Comparison - Plumbing & Appliances
Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf |
|---|---|---|---|---|---|
DHW | DESIGNED | HPWH in-unit; 1 Bed: UEF ≥3.88 (click here); 2 Bed: UEF ≥4.07 (click here); | $4.75 | $0.25 | $4.50 |
DESIGNED v2 | Floor 2: HPWH in-unit; 1 Bed: UEF ≥3.88 (click here); 2 Bed: UEF ≥4.07 (click here); Floor 3-5: Electric resistance tank heater In unit (UEF ≥0.93) (click here) | $2.05 | $0.00 | $2.05 | |
SPRAY | Electric resistance tank heater In unit (UEF ≥0.93) (click here) | $1.15 | $0.00 | $1.15 | |
DROP | Electric resistance tank heater In unit (UEF ≥0.93) (click here) | $1.15 | $0.00 | $1.15 | |
Hot Water Piping | DESIGNED | Hot water pipes insulated to R-3. | $0.45 | $0.00 | $0.45 |
DESIGNED v2 | Hot water pipes insulated to R-3. | $0.45 | $0.00 | $0.45 | |
SPRAY | Hot water pipes insulated to R-3. | $0.45 | $0.00 | $0.45 | |
DROP | Hot water pipes insulated to R-3. | $0.45 | $0.00 | $0.45 | |
Water Fixtures | DESIGNED | Low flow fixtures (Lavatory: ≤1.5 GPM, Shower: ≤2.0 GPM) | $0.80 | $0.00 | $0.80 |
DESIGNED v2 | Low flow fixtures (Lavatory: ≤1.5 GPM, Shower: ≤2.0 GPM) | $0.80 | $0.00 | $0.80 | |
SPRAY | Low flow fixtures (Lavatory: ≤1.5 GPM, Shower: ≤2.0 GPM) | $0.80 | $0.00 | $0.80 | |
DROP | Low flow fixtures (Lavatory: ≤1.5 GPM, Shower: ≤2.0 GPM) | $0.80 | $0.00 | $0.80 | |
Appliances | DESIGNED | ENERGY STAR Certified All Electric Appliances (Refrigerator) (Dishwasher) (Washer) (Dryer) | $3.90 | $0.00 | $3.90 |
DESIGNED v2 | ENERGY STAR Certified All Electric Appliances (Refrigerator) (Dishwasher) (Washer) (Dryer) | $3.90 | $0.00 | $3.90 | |
SPRAY | ENERGY STAR Certified All Electric Appliances (Refrigerator) (Dishwasher) (Washer) (Dryer) | $3.90 | $0.00 | $3.90 | |
DROP | ENERGY STAR Certified All Electric Appliances (Refrigerator) (Dishwasher) (Washer) (Dryer) | $3.90 | $0.00 | $3.90 |
Path Comparison - Electrical
Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf |
|---|---|---|---|---|---|
Lighting | DESIGNED | 100% high-efficacy (LED) | $1.50 | $0.00 | $1.50 |
DESIGNED v2 | 100% high-efficacy (LED) | $1.50 | $0.00 | $1.50 | |
SPRAY | 100% high-efficacy (LED) | $1.50 | $0.00 | $1.50 | |
DROP | 100% high-efficacy (LED) | $1.50 | $0.00 | $1.50 | |
Solar Ready | DESIGNED | Exempt - solar radiation available to the building is not suitable for a solar-ready zone (click to see exemption reasoning). | $0.00 | $0.00 | $0.00 |
DESIGNED v2 | Exempt - solar radiation available to the building is not suitable for a solar-ready zone (click to see exemption reasoning). | $0.00 | $0.00 | $0.00 | |
SPRAY | Exempt - solar radiation available to the building is not suitable for a solar-ready zone (click to see exemption reasoning). | $0.00 | $0.00 | $0.00 | |
DROP | Exempt - solar radiation available to the building is not suitable for a solar-ready zone (click to see exemption reasoning). | $0.00 | $0.00 | $0.00 | |
EV Ready | DESIGNED | EV Charging Compliance: Provide EV Ready spaces for not less than 20% of the total parking spaces. Compliance may be achieved through any combination of the following options: Option 1: Standard Dedicated Level 2 Provide EV Ready infrastructure for at least 20% of parking spaces, where each space is served by its own dedicated 208/240V, 40-amp branch circuit. Option 2: DC Fast Charger Exception Exempt the garage from the 20% wiring requirement entirely by installing and activating a minimum of four (4) DC Fast Chargers, each rated at 150 kW or higher. Option 3: Level 1 Substitution Meet the EV Ready target by substituting standard Level 2 (208/240V) spaces with Level 1 (120V, 20-amp) spaces at a 3-to-1 ratio. | $1.05 | $0.00 | $1.05 |
DESIGNED v2 | EV Charging Compliance: Provide EV Ready spaces for not less than 20% of the total parking spaces. Compliance may be achieved through any combination of the following options: Option 1: Standard Dedicated Level 2 Provide EV Ready infrastructure for at least 20% of parking spaces, where each space is served by its own dedicated 208/240V, 40-amp branch circuit. Option 2: DC Fast Charger Exception Exempt the garage from the 20% wiring requirement entirely by installing and activating a minimum of four (4) DC Fast Chargers, each rated at 150 kW or higher. Option 3: Level 1 Substitution Meet the EV Ready target by substituting standard Level 2 (208/240V) spaces with Level 1 (120V, 20-amp) spaces at a 3-to-1 ratio. | $1.05 | $0.00 | $1.05 | |
SPRAY | EV Charging Compliance: Provide EV Ready spaces for not less than 20% of the total parking spaces. Compliance may be achieved through any combination of the following options: Option 1: Standard Dedicated Level 2 Provide EV Ready infrastructure for at least 20% of parking spaces, where each space is served by its own dedicated 208/240V, 40-amp branch circuit. Option 2: DC Fast Charger Exception Exempt the garage from the 20% wiring requirement entirely by installing and activating a minimum of four (4) DC Fast Chargers, each rated at 150 kW or higher. Option 3: Level 1 Substitution Meet the EV Ready target by substituting standard Level 2 (208/240V) spaces with Level 1 (120V, 20-amp) spaces at a 3-to-1 ratio. | $1.05 | $0.00 | $1.05 | |
DROP | EV Charging Compliance: Provide EV Ready spaces for not less than 20% of the total parking spaces. Compliance may be achieved through any combination of the following options: Option 1: Standard Dedicated Level 2 Provide EV Ready infrastructure for at least 20% of parking spaces, where each space is served by its own dedicated 208/240V, 40-amp branch circuit. Option 2: DC Fast Charger Exception Exempt the garage from the 20% wiring requirement entirely by installing and activating a minimum of four (4) DC Fast Chargers, each rated at 150 kW or higher. Option 3: Level 1 Substitution Meet the EV Ready target by substituting standard Level 2 (208/240V) spaces with Level 1 (120V, 20-amp) spaces at a 3-to-1 ratio. | $1.05 | $0.00 | $1.05 |
Path Comparison - Soft Costs
Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf |
|---|---|---|---|---|---|
Paperwork & Modeling | DESIGNED | Energy model, 2021 IECC checklists, ENERGY STAR MFNC, and incentive documentation. | $0.58 | $2.30 | -$1.72 |
DESIGNED v2 | Energy model, 2021 IECC checklists, and incentive documentation. | $0.73 | $1.55 | -$0.81 | |
SPRAY | Energy model, 2021 IECC checklists, ENERGY STAR MFNC, and incentive documentation. | $0.52 | $2.30 | -$1.78 | |
DROP | Energy model, 2021 IECC checklists, ENERGY STAR MFNC, and incentive documentation. | $0.52 | $2.30 | -$1.78 | |
Testing & Verification | DESIGNED | Blower Door Test, Duct Test Total, Mechanical Ventilation Testing, Room Balancing, Predrywall & Final Inspection. | $0.00 | $0.00 | $0.00 |
DESIGNED v2 | Blower Door Test, Duct Test Total, Mechanical Ventilation Testing, Predrywall & Final Inspection. | $0.00 | $0.00 | $0.00 | |
SPRAY | Blower Door Test, Mechanical Ventilation Testing, Room Balancing, Predrywall & Final Inspection. | $0.00 | $0.00 | $0.00 | |
DROP | Blower Door Test, Mechanical Ventilation Testing, Room Balancing, Predrywall & Final Inspection. | $0.00 | $0.00 | $0.00 |