Jurisdiction file · Maryland
What Montgomery County pays, by the filings
8,759 permits across 10 kinds of work, filed over the last two years. Every figure is what somebody actually declared to Montgomery County — no estimates.
| Project | Median | Typical range | Permits |
|---|---|---|---|
| Solar Panels | $24,000 | $16,000 – $34,510 | 3,315 |
| Deck or Patio | $15,640 | $7,800 – $30,000 | 2,165 |
| Kitchen Remodel | $62,950 | $25,000 – $150,000 | 956 |
| Home Addition | $110,700 | $45,000 – $250,000 | 851 |
| Bathroom Remodel | $27,182 | $15,000 – $55,000 | 636 |
| Roof Replacement | $30,000 | $18,863 – $47,946 | 234 |
| Swimming Pool | $100,000 | $49,000 – $156,854 | 233 |
| Garage | $30,000 | $15,000 – $85,000 | 218 |
| Interior Remodel | $84,500 | $40,950 – $200,000 | 90 |
| ADU / Guest House | $65,000 | $34,000 – $200,000 | 61 |
What the file shows
Solar Panels is the work Montgomery County files most: 3,315 of these 8,759 permits, 38% of the file. The dearest median here is Home Addition at $110,700; the cheapest is Deck or Patio at $15,640.
The figure to read is not the median but the range next to it. Kitchen Remodel is the least predictable work in this jurisdiction: half of those jobs land between $25,000 and $150,000, a 6.0× spread inside one city and one kind of work. A median says where the middle sits. It does not say which half a particular job is in, and on work that varies this much the difference is the whole decision.
Source: Montgomery County MD — Commercial and Residential Building Permits. Updated 2026-09-24. Methodology.