Residential HVAC permits in Potomac, MD
102 residential HVAC permits issued by Montgomery County MD (mechanical), Montgomery County MD (electrical), Montgomery County MD (residential), the 8 weeks ending Oct 16, 2026. Oct 16, 2026 is the latest issue date the source has published.
Quick answer. In the 8 weeks ending Oct 16, 2026, 102 residential HVAC permits were issued in Potomac, 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 permits). The median declared value was $4,150 across 2 permits that list one. The latest permit date published is Oct 16, 2026.
What an HVAC permit means in Potomac
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 Potomac, permits were issued on 39 different days in the window; the most recent were Oct 15, 2026, Oct 12, 2026, Oct 9, 2026. The busiest ZIPs were 20854 (102).
By residential HVAC permit count, Potomac ranks #32 of the 94 HVAC pages on this site and #6 of 18 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 102 permits whose type or description also matches another trade. These are the follow-on and partner trades on Potomac jobs.
- electrical: 14 permits (14%)
- windows & doors: 2 permits (2%)
- garage: 2 permits (2%)
- gas line: 2 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 | 74 | 73% |
| ELECTRICAL PERMIT / INSTALL SINGLE FAMILY DWELLING | 12 | 12% |
| MECHANICAL PERMIT / INSTALL SINGLE FAMILY DWELLING | 11 | 11% |
| BUILDING RESIDENTIAL PERMIT / ALTER SINGLE FAMILY DWELLING | 2 | 2% |
| ELECTRICAL PERMIT / INSTALL RESIDENTIAL ACCESSORY STRUCTURE | 1 | 1% |
Busiest ZIP codes
| ZIP | Permits | Share | 8-wk avg / week |
|---|---|---|---|
| 20854 | 102 | 100% | 12.75 |
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.
Equipment stated in the permit
| Equipment | Permits | Share |
|---|---|---|
| furnace | 42 | 41% |
| A/C / condenser | 37 | 36% |
| heat pump | 36 | 35% |
| ductwork | 11 | 11% |
| mini-split | 7 | 7% |
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 |
|---|---|---|---|---|---|
| 2026-10-15 | 20854 | MECHANICAL PERMIT / INSTALL SINGLE FAMILY DWELLING | HVAC + gas line | heat pump; furnace; A/C / condenser; ductwork | n/a |
| 2026-10-06 | 20854 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | furnace; A/C / condenser | n/a |
| 2026-09-28 | 20854 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | heat pump; furnace | n/a |
| 2026-09-17 | 20854 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | heat pump; furnace; A/C / condenser | n/a |
| 2026-09-10 | 20854 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | A/C / condenser; ductwork | n/a |
| 2026-08-31 | 20854 | MECHANICAL PERMIT / REPLACE SINGLE FAMILY DWELLING | HVAC | heat pump | 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 Potomac, MD
Residential permits in the same window, by trade.
Questions
How many residential HVAC permits were issued in Potomac, MD recently?
102 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 Potomac ZIP codes have the most HVAC permits?
20854 (102 permits), by residential HVAC permit count the 8 weeks ending Oct 16, 2026. 1 ZIP codes had at least one permit.
What is the median declared value of a residential HVAC permit in Potomac?
$4,150, across 2 permits that list a valuation. Declared values are what the applicant stated on the permit, not the contract price.
How do I get the Potomac HVAC permit list, and what does it cost?
Request a free 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, with daily alerts. Guarantee on every package: If a weekly file is late or missing, that month is free. If a month delivers under half the 8-week average permit count for your ZIPs and trade, the next month is free.
Potomac HVAC leads, every Monday
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