The clean energy platform for small multifamily landlords preserving their legacy. Plan your retrofit, stack every Massachusetts incentive, then get it done with a season-by-season timeline and rebate filing, all in one place.
Smart energy, smarter homes. Built for Roxbury, Dorchester, Mattapan and East Boston. No account needed.
From a few questions about your building to a plan you can actually follow — in about two minutes.
Your address, how many units you have, and how you heat the place. We can pull much of it straight from Boston's property records — just tap “Find record.”
Heat pumps, insulation, solar — ranked by the most emissions cut for every dollar. Every Massachusetts incentive is stacked for you, with honest numbers for what you'll actually pay.
0% financing, rebates, and ongoing solar income are each shown on their own line — never mixed together. You see the real upfront cost, your monthly savings, and the emissions cut.
Create a free account and get a season-by-season work timeline, a budget that tracks quotes and rebate checks, and a place to upload your energy bills and inspection reports.
The solution
01 · PLAN
A retrofit plan for your building in minutes, with every Massachusetts incentive you qualify for found and stacked.
02 · EXECUTE
A season-by-season work timeline, one scope of work for every bidder, milestone tracking, and rebate filing tracked to the check.
03 · EMPOWER
Self-paced lessons in the app, plus group cohorts as we grow, so you can put your Mass Save charge to work.
Boston pays more into Mass Save than any other Massachusetts city, but small landlords in environmental justice neighborhoods are the least able to use it. And with the federal 25C and 25D tax credits gone after 2025, Massachusetts programs are now the whole picture. GLH is how landlords actually get the upgrades done.
Start free. Upgrade when you're ready to retrofit.
Free
$0 forever
The eligibility check
Curious landlords exploring options
Plus
$49/mo
or $499/yr · The full plan
Active researchers
Premium
$149/mo
or $1,499/yr · The concierge tier
Landlords actively retrofitting
Cancel anytime — you keep access until the end of the period you paid for.
