Residential HVAC permits in Montgomery County, MD
1,078 residential HVAC permits were issued in Montgomery County, MD in the 8 weeks to Oct 16, 2026. Get them weekly by ZIP from Curbside Signal.
Source: Montgomery County MD (mechanical), Montgomery County MD (electrical), Montgomery County MD (residential). Oct 16, 2026 is the latest issue date the source has published.
Quick answer. In the 8 weeks ending Oct 16, 2026, 1,078 residential HVAC permits were issued in Montgomery County, MD, according to public records from Montgomery County MD (mechanical), Montgomery County MD (electrical), Montgomery County MD (residential). The busiest ZIP codes were 20854 (102 residential permits), 20817 (75 residential permits), 20814 (51 residential permits). The median declared value was $25,000 across 12 residential permits that list one. The latest permit date published is Oct 16, 2026.
Guarantee on every package: If a month comes in under half the 8-week average permit count for your ZIPs and trades, the next month is free. If a weekly file is ever late or missing, that month is free.
Every package includes your first file within 24 hours of purchase. If we can't deliver your first file within 24 hours of purchase, we refund you in full.
What an HVAC permit means in Montgomery County
A residential HVAC permit is a furnace, A/C, heat pump, mini-split or duct change-out. For an HVAC contractor the install is sold, but same-age homes nearby are on the same replacement clock, and every permit adds the equipment to someone's service-agreement list.
In Montgomery County, permits were issued on 54 different days in the window; the most recent were Oct 16, 2026, Oct 15, 2026, Oct 14, 2026. The busiest ZIPs were 20854 (102), 20817 (75), 20814 (51).
By residential HVAC permit count, Montgomery County ranks #8 of the 101 HVAC pages on this site and #1 of 19 in MD.
- Mail maintenance plans and tune-up offers to the houses around each change-out.
- Watch heat-pump share by ZIP to see where electrification incentives are moving demand.
- Pass heat-pump jobs to electricians: many need a panel or circuit upgrade.
Other work on the same permits
Share of these 1,078 residential permits whose type or description also matches another trade. These are the follow-on and partner trades on Montgomery County jobs.
- Electrical: 108 residential permits (10%)
- Gas line: 25 residential permits (2%)
- Water heater: 25 residential permits (2%)
- New construction: 23 residential permits (2%)
Weekly trend
Permits per 7-day period, ending Oct 16, 2026. n/c = not collected yet (before our pipeline started pulling this source). It is not zero. Striped bars are partly collected weeks.
Top permit types
| Permit type / subtype | Permits | Share |
|---|---|---|
| MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | 702 | 65% |
| MECHANICAL PERMIT / INSTALL SINGLE FAMILY DWELLING | 165 | 15% |
| ELECTRICAL PERMIT / INSTALL SINGLE FAMILY DWELLING | 91 | 8% |
| MECHANICAL PERMIT / REPLACE TOWNHOUSE | 61 | 6% |
| MECHANICAL PERMIT / INSTALL TOWNHOUSE | 20 | 2% |
Busiest ZIP codes
| ZIP | Permits | Share | 8-wk avg / week |
|---|---|---|---|
| 20854 | 102 | 9% | 12.75 |
| 20817 | 75 | 7% | 9.50 |
| 20814 | 51 | 5% | 6.38 |
| 20815 | 50 | 5% | 6.25 |
| 20816 | 47 | 4% | 5.88 |
8-wk avg / week is the trailing 8-week weekly average we quote in coverage checks for that ZIP and trade. It counts every source in the ZIP and includes permits with unknown use, so it can be higher than this page's residential count. 6 permits on this page have no ZIP in the source.
Equipment stated in the permit
| Equipment | Permits | Share |
|---|---|---|
| Heat pump | 340 | 32% |
| A/C / condenser | 337 | 31% |
| Furnace | 334 | 31% |
| Ductwork | 141 | 13% |
| Mini-split | 68 | 6% |
Parsed from the permit's own type and work text. A permit can state more than one; many state none.
Sample rows
Anonymized: street address, permit number and any names removed. Subscribers get the full row with address, permit number and source link.
| Issued | ZIP | Permit type | Scope | Equipment | Declared value |
|---|---|---|---|---|---|
| 2026-10-16 | 20814 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | Heat pump; mini-split | N/A |
| 2026-10-07 | 20866 | MECHANICAL PERMIT / INSTALL SINGLE FAMILY DWELLING | HVAC | Not stated | N/A |
| 2026-09-28 | 20874 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC + gas line | Furnace; A/C / condenser | N/A |
| 2026-09-18 | 20874 | ELECTRICAL PERMIT / INSTALL SINGLE FAMILY DWELLING | HVAC + electrical | Not stated | N/A |
| 2026-09-10 | 20816 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | Not stated | N/A |
| 2026-09-01 | 20832 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | Not stated | N/A |
Source
- Montgomery County MD (electrical): Permit records on data.montgomerycountymd.gov (dataset qxie-8qnp), published by Montgomery County MD (electrical). Source dataset. Collected window(s): Aug 21, 2026 – Oct 15, 2026. Last pulled Oct 18, 2026.
- Montgomery County MD (mechanical): Permit records on data.montgomerycountymd.gov (dataset ih88-a6aa), published by Montgomery County MD (mechanical). Source dataset. Collected window(s): Aug 22, 2026 – Oct 16, 2026. Last pulled Oct 18, 2026.
- Montgomery County MD (residential): Permit records on data.montgomerycountymd.gov (dataset m88u-pqki), published by Montgomery County MD (residential). Source dataset. Collected window(s): Aug 21, 2026 – Oct 15, 2026. Last pulled Oct 18, 2026.
Metric: Residential = the source marks the permit's use as residential (permits with commercial or unknown use are not counted). HVAC = the permit's type or work description matches the Curbside Signal HVAC rules. Counts exclude void or cancelled permits. Dates are the jurisdiction's permit issue date. Records are deduplicated on source and permit number. How we count. Part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metro: every trade × city page there.
The honest limit. A permit usually means the job is already sold. We say that up front. The value is what happens around it:
- Neighbor marketing around active jobs: same-age houses on the same street.
- Cross-trade follow-on demand: new roof → solar, gutters, insulation; remodel → HVAC, electrical, landscaping, pool; new build → pest, security, landscaping.
- Competitor intelligence: which contractors pull permits where (where the jurisdiction publishes it), and who to recruit as subs.
- Early-stage projects for commercial trades and GC subs.
Follow-on: Remodels and additions drive HVAC, electrical, landscaping and pool work. An HVAC change-out often needs electrical capacity too.
Other trades in Montgomery County, MD
Residential permits in the same window, by trade.
Questions
How many residential HVAC permits were issued in Montgomery County, MD recently?
1,078 residential HVAC permits in the public records we pulled, the 8 weeks ending Oct 16, 2026. Source: Montgomery County MD (mechanical), Montgomery County MD (electrical), Montgomery County MD (residential).
Which Montgomery County ZIP codes have the most HVAC permits?
20854 (102 residential permits), 20817 (75 residential permits), 20814 (51 residential permits), by residential HVAC permit count the 8 weeks ending Oct 16, 2026. 42 ZIP codes had at least one permit.
What is the median declared value of a residential HVAC permit in Montgomery County?
$25,000, across 12 residential permits that list a valuation. Declared values are what the applicant stated on the permit, not the contract price.
How do I get the Montgomery County HVAC permit list, and what does it cost?
Request a free 10-permit sample for your ZIPs first. ZIP Pack is $29/mo for one trade and up to 5 ZIPs every Monday; Metro Feed is $99/mo for a whole metro and up to 3 trades, delivered every Monday. Every package includes your first file within 24 hours of purchase. Guarantee on every package: If a month comes in under half the 8-week average permit count for your ZIPs and trades, the next month is free. If a weekly file is ever late or missing, that month is free.
Montgomery County HVAC leads, every Monday
Send your trade and ZIP codes. We'll reply with a real sample from the public records we pull, or tell you plainly that we don't cover you yet.