SumZero Energy Systems: 457 heat pump permits, none sent back.
SumZero installs heat pumps across Greater Boston. We started by clearing a 150-project inspection backlog, and we have filed their permits and run their inspections ever since.
The last six months.
April 16 to October 16, 2026. About 60 Massachusetts cities and towns.
- 457
- Permits filed
- 233 projects
- 100%
- Approved with no city corrections
- Zero rounds of plan check comments
- 97%
- Passed first inspection
- Against our own 90% goal
- 8 days
- Median, submitted to issued
- Business days, across 403 issued permits
Figures from the TaskHatch platform for SumZero’s projects only, exported October 16, 2026.
Case study
150 stalled heat pump projects, cleared in 90 days.
SumZero Energy Systems, a heat pump contractor in the Boston area, came to us with a backlog of 150 projects waiting on inspections.
We worked through every permit on the list. One in four had already expired, so those had to be applied for again before they could be inspected and closed.
The full backlog was cleared in 90 days.
Published with SumZero Energy Systems’ permission.
- 150
- Open projects
- 90 days
- To clear the backlog
- 1 in 4
- Permits already expired
Business days to permit, by town.
Useful when you quote start dates. Average business days from submission to issuance on SumZero's projects, for towns with eight or more permits in the period.
| Town | Business days | Permits |
|---|---|---|
| Holliston | 25.7 | 37 |
| Framingham | 6.4 | 31 |
| Ashland | 18 | 24 |
| Hopkinton | 12.5 | 21 |
| Boston | 16.4 | 20 |
| Milford | 12.5 | 17 |
| Newton | 6.2 | 15 |
| Arlington | 5.5 | 13 |
| Lexington | 17.6 | 11 |
| Needham | 5.6 | 10 |
| Waltham | 21.3 | 10 |
| Hopedale | 12.3 | 9 |
| Watertown | 10.2 | 9 |
| Cambridge | 14.2 | 9 |
| Wellesley | 1 | 8 |
| Franklin | 6.3 | 8 |
From a client
Promatic has been extremely helpful with working handling our permits with submissions, following up with the towns/cities to ensure that the permits get approved in a timely manner so that it doesn't delay the installation of our projects.
Having someone dedicated to process the applications and following up with our customers for inspections really relieves the weight on our team and we can fully count on Promatic to make sure they take care of our customers just as much as we do.
They take the time to learn our culture, how we do our processed and is willing to go above and beyond to ensure the customer has the smoothest possible journey with us.
Case study
Send us your next heat pump project.
We file in about 60 Massachusetts cities and towns for SumZero, and in more than 300 jurisdictions across all our clients.
$150 to file. $100 to run your inspections through final. City comments never billed, however many rounds.
Questions? Email us at permits@getpromatic.com
No setup. No contract. No minimum.