Renovations & Additions

Build energy efficiency into your renovation or addition to drive comfort and savings.

A group of people discussing renovation plans

Get start-to-finish support from a certified HERS rater to help you optimize design, select efficient technologies, and access incentives for your renovation or addition.

The Sponsors of Mass Save provide incentives for incorporating energy-efficient upgrades to renovations or additions of existing homes in Massachusetts. Eligible upgrades may include, but are not limited to:

Insulation
Heating, ventilation, and air conditioning
Water heating equipment
Air and duct sealing

In alignment with the Commonwealth’s climate policy and goals, the Sponsors of Mass Save are discontinuing incentives for homes that utilize equipment powered by natural gas, oil and propane. Projects enrolled in the Renovations & Additions program must be submitted for incentive processing by September 30, 2024, to receive incentives for natural gas, oil or propane equipment. As of October 1, 2024, only electrification equipment and improvements to the thermal envelope will be incentivized. Contact RenovateAddMA@icf.com for more information.

Single-family (1-4 units)
Tier	Base	Level 1	Level 2
Overview	All major renovations and additions may be eligible. Homes with existing fossil fuels may participate but no incentives will be tied to fossil fuel equipment. Additions must be all-electric.	All-electric heating, water heating, cooking, and clothes drying in the renovated home and any additions.	All-electric heating, water heating, cooking, and clothes drying in the renovated home and any additions.
Performance Specifications	≥5% savings above baseline	≥30% savings above baseline or HERS ≤55 Air infiltration: ≤5 ACH50 Ventilation: HRV/ERV optional EV-charging ready: optional	≥ 50% savings above baseline or HERS ≤45 Air infiltration: ≤3 ACH50 Ventilation: HRV/ERV required EV-charging ready required
Incentives	Pay-for-Savings (PFS): ($0.50kWh) + ($50/MMBtu) + (% savings x $4,000)	Single-family: $20,000 2-unit: $30,000 3-unit: $40,000 4-unit: $50,000	Single-family: $30,000 2-unit: $40,000 3-unit: $50,000 4-unit: $60,000
Market Transformation adders*	Air-Source Heat Pump (partial): $1,250/ton (Base tier only) Air-Source or Air-to-Water Heat Pump (whole home): $10,000/unit (Base tier only) ENERGY STAR® Certified Ground-Source Heat Pump (partial): $2,000/ton (Base tier only) ENERGY STAR Certified Ground-Source Heat Pump (whole home): $15,000/unit (Base tier only) Wi-Fi Connected Thermostat: $100/unit Induction Cooktop: $500/unit Heat Pump Clothes Dryer: $200/unit DOE Zero Energy Ready Homes Certification: $250/unit ENERGY STAR NextGen Certification: $250/unit
*The Market Transformation adders are designed to encourage participants to incorporate emerging equipment technology into their residential projects to drive higher building performance while offering enhanced occupant experience. Participants receiving Market Transformation adders or Level 1 or 2 incentives are not eligible to also receive equipment rebates through the Mass Save Heating & Cooling program or any other retail rebate paths. Adders are also available for advanced certifications from the Department of Energy and ENERGY STAR

Learn more about how incentives are calculated in the Pay-for-Savings approach.

Confirm Eligibility
View the Eligibility Tab to confirm the eligibility requirements.
Get started.
Contact a Sponsor-approved Home Energy Rating System (HERS) rater or fill out an Interest Form. If you have questions, please call us at 1-866-527-SAVE (7283) or email RenovateAddMA@icf.com.
Schedule a preliminary site visit.
This visit will be completed by the HERS rater you choose to work with and should take place prior to the start of construction or demolition of your home. Contact a Sponsor-approved certified HERS rater to schedule this site visit.
Have a site visit.
Your HERS rater will review your plans, conduct diagnostic testing as needed, and may recommend additional energy efficiency upgrades. Afterward you will receive a report summarizing the estimated savings and incentives your project will receive.
Schedule insulation inspection.
This visit takes place at the midpoint of construction, after you have installed new insulation but before wallboard has gone up. This is an important step, contact your HERS rater to schedule your insulation inspection.
Schedule a final inspection.
As you near completion, set up a final site visit with your HERS rater. They will conduct a final walkthrough of the home, perform diagnostic testing and finalize all the details of the energy model.
Receive Your Incentive
After the final inspection is processed, you’ll receive an incentive completion notification and a post-participation survey via email. Within 10–12 weeks of your final inspection, you will receive an incentive check in the mail.

Residential renovations and additions to single- and multi-family homes with three stories or less may be eligible if:

They are located within Sponsor service territories
Renovations are extensive and consist of 50% or more of the original home undergoing renovation. Additions must meet a minimum of 500 square feet total floor area.
A Sponsor-approved certified HERS Rater conducts a preliminary site visit at your home prior to the start of construction or demolition
Incentives are not available for new or replacement heating and hot water equipment powered by natural gas, propane or oil.
Customers receiving Renovations & Additions incentives are not eligible for equipment rebates (e.g. heat pumps) through the Mass Save Heating & Cooling programs.