Residential water heater permits in Baltimore, MD
439 residential water heater permits issued by Baltimore City, the 8 weeks ending Oct 18, 2026. Oct 18, 2026 is the latest issue date the source has published.
Quick answer. In the 8 weeks ending Oct 18, 2026, 439 residential water heater permits were issued in Baltimore, MD, according to public records from Baltimore City. The busiest ZIP codes were 21201 (95 permits), 21217 (40 permits), 21216 (32 permits). The median declared value was $5,000 across 429 permits that list one. The latest permit date published is Oct 18, 2026.
What a water heater permit means in Baltimore
A residential water heater permit is a replacement or new install the homeowner has already arranged. For a water heater installer it marks a street of houses the same age with tanks on the same clock.
In Baltimore, permits were issued on 53 different days in the window; the most recent were Oct 17, 2026, Oct 16, 2026, Oct 15, 2026. The busiest ZIPs were 21201 (95), 21217 (40), 21216 (32).
By residential water heater permit count, Baltimore ranks #3 of the 41 water heater pages on this site and #2 of 3 in MD.
- Mail and door-hang the houses around each replacement.
- Track where tankless and heat-pump units are showing up by ZIP.
- Pass gas-to-heat-pump swaps to electricians: most need a new circuit.
Other work on the same permits
Share of these 439 permits whose type or description also matches another trade. These are the follow-on and partner trades on Baltimore jobs.
- plumbing: 206 permits (47%)
- HVAC: 204 permits (46%)
- electrical: 146 permits (33%)
- windows & doors: 96 permits (22%)
Weekly trend
Permits per 7-day period, ending Oct 18, 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 |
|---|---|---|
| Dwelling: Rowhouse G | 92 | 21% |
| Dwelling: Rowhouse B | 42 | 10% |
| Single Family Dwelling D | 36 | 8% |
| Dwelling: Rowhouse I | 32 | 7% |
| Dwelling: Rowhouse H | 31 | 7% |
Busiest ZIP codes
| ZIP | Permits | Share | 8-wk avg / week |
|---|---|---|---|
| 21201 | 95 | 22% | 11.88 |
| 21217 | 40 | 9% | 5.00 |
| 21216 | 32 | 7% | 4.00 |
| 21213 | 30 | 7% | 3.75 |
| 21218 | 28 | 6% | 3.62 |
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.
Type stated in the permit
| Type | Permits | Share |
|---|---|---|
| gas tank | 119 | 27% |
| electric tank | 106 | 24% |
| heat-pump water heater | 30 | 7% |
| tankless | 6 | 1% |
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 | Type | Declared value |
|---|---|---|---|---|---|
| 2026-10-17 | 21213 | Dwelling: Rowhouse I | HVAC + water heater + gas line | not stated | $6,500 |
| 2026-10-08 | 21206 | Single Family Dwelling D | water heater | gas tank | $2,303 |
| 2026-09-28 | 21213 | Dwelling: Rowhouse J | HVAC + water heater + gas line | not stated | $2,800 |
| 2026-09-16 | 21224 | Dwelling: Rowhouse B | water heater | electric tank | $1,000 |
| 2026-09-09 | 21225 | Dwelling: Rowhouse H | water heater | gas tank | $1,145 |
| 2026-08-31 | 21201 | Dwelling: Rowhouse G | HVAC + plumbing + water heater + electrical + windows/doors + siding + kitchen/bath remode | not stated | $136,137 |
Source
- Baltimore City: Permit records on baltegis.baltimorecity.gov, published by Baltimore City. Source dataset. Collected window(s): Aug 24, 2026 – Oct 18, 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). Water Heaters = the permit's type or work description matches the Curbside Signal water heater 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 Baltimore-Columbia-Towson, MD 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: Water heater swaps lead to gas line, venting and electrical work, and to whole-house repipes in older homes.
Other trades in Baltimore, MD
Residential permits in the same window, by trade.
Questions
How many residential water heater permits were issued in Baltimore, MD recently?
439 residential water heater permits in the public records we pulled, the 8 weeks ending Oct 18, 2026. Source: Baltimore City.
Which Baltimore ZIP codes have the most water heater permits?
21201 (95 permits), 21217 (40 permits), 21216 (32 permits), by residential water heater permit count the 8 weeks ending Oct 18, 2026. 23 ZIP codes had at least one permit.
What is the median declared value of a residential water heater permit in Baltimore?
$5,000, across 429 permits that list a valuation. Declared values are what the applicant stated on the permit, not the contract price.
How do I get the Baltimore water heater 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.
Baltimore water heater 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.