For an older building-permit question in Montgomery County, Maryland, first check whether the property is under County permitting authority, then search DPS Data Search by property address or a known application type and number. If the record you need is missing, follow the County’s Request Records route and describe the exact file: a building permit, inspection, occupancy record or well/septic record. These are different questions, and a public search result does not establish that every historic file has been digitized.
At a glance
- Address search: Yes. DPS Data Search takes street number and street name.
- Online records start: Not confirmed.
- Older records: Online records request through a DPS account; staff quote fees under Executive Regulation 27-01AM before processing. Processing time: not confirmed.
- Checked: October 21, 2026. Compare 15 other jurisdictions in our permit lookup by address comparison.
Building Permit History tool · for buyers and owners
Permit status decoder
Copy the permit rows from the city or county portal and paste them below, one permit per line. The decoder explains each status, flags the ones to ask about, and lists what to request before you rely on the record.
How to search and confirm the right office
The County’s current records instructions direct requests for Rockville and Gaithersburg records to those municipalities. Check the issuing jurisdiction before using a Montgomery County DPS absence as evidence. A postal address using a familiar city name is not enough by itself; if jurisdiction is uncertain, ask the relevant permitting office which agency issued records for the project and period. Our city-versus-county permit guide explains this first decision.
Use the DPS search page in this order, based on the identifiers you actually have:
- Known permit or application number: select its application type and enter the number. In a matching result, note the site address, work type, application date and any reviews or inspections shown for that record.
- Known property address: enter the required street number and street name. Direction and suffix are optional. Select the matching address, then distinguish the building application from separate trade or well/septic entries.
- Uncertain street spelling: the alternative ZIP search requires a five-digit ZIP and accepts part of a street name. Its address list includes only locations with at least one DPS application or permit; a missing address there does not prove that no permit was issued.
- No matching file: record the search key and period you tried. Give those details to DPS with the specific permit, inspection, occupancy or well/septic record requested so staff can check beyond the display.
What 13,697 recent Montgomery County residential permits show about permits left without a final
We downloaded every residential building permit application added in 2023 and 2024 from the county’s open data set (dataMontgomery, Residential Permit, pulled October 23, 2026) and measured how long each took to issue and whether it now has a final date. That is 13,697 applications, 12,455 of them issued. Commercial, demolition, mechanical, and fence permits are published in separate county data sets and are not included. The numbers below are our own calculation from DPS records, not figures published by the Department of Permitting Services.
| Permit (county use and work type) | Issued permits | Days from application to issue (median) | Slowest 10% took at least | Still “Issued,” no final date |
|---|---|---|---|---|
| House or townhouse alteration | 5,225 | 16 | 55 days | 16% |
| House or townhouse addition | 2,028 | 45 | 151 days | 17% |
| New house or townhouse | 1,660 | 45 | 160 days | 4% |
| Deck | 1,812 | 15 | 62 days | 9% |
| Shed | 595 | 12 | 66 days | 29% |
| In-ground swimming pool | 235 | 51 | 167 days | 24% |
| All residential permits | 12,455 | 24 | 96 days | 15% |
Three things stand out for anyone checking a Montgomery County house before buying.
- About one in six house alterations has no final yet. Of 5,225 alteration permits on houses and townhouses, 851 (16%) still show “Issued” with no final date. The share is about the same for permits applied for in 2023 (16%) and 2024 (17%), so older permits in this set have not been closing later. The county data has no “Expired” status, so an old permit that still reads Issued is the record to ask about.
- Small structures are left open most often. 29% of shed permits and 24% of in-ground pool permits have no final date, against 9% for decks and 4% for new houses. Sheds and pools are easy to forget at closing, so check their records along with the house.
- Permits here are issued quickly. House alterations were typically issued in 16 days, and even the slowest 10% took 55 days or less. That is a much shorter tail than in Seattle, where the slowest 10% of home remodels took 168 days or more. A long gap on a Montgomery County alteration is unusual and worth reading in the permit’s review history.
Limits of this count: the application date is the date the county added the record, and 1,242 applications not yet issued are left out. Statuses are the county’s current status field on the pull date; 146 permits show “Stop Work,” most of them on new houses, and the data does not explain that label. Use and work type are the county’s categories.
Pick a city, a type of work, and a year. See how long similar permits took to issue and how many never recorded a final inspection.
To compare Montgomery County’s wait with other cities, see our data on how long building permits take in six places.
Request the missing historical record precisely
The County’s 311 DPS records page says some permits and complaints can be searched without charge, while copies of records use an Information Request Form through the DPS account entry. That is a request path, not a public guarantee that every document is visible before login. The County DPS homepage also links Data Search and Request Records.
For a useful request, supply the property address and any former address or permit number you already know, approximate project period, and the record class you seek. For example, ask for the building-permit file and final-inspection evidence for a particular addition, rather than “all old records.” If the question concerns a private well or septic system, identify that separately and ask whether DPS holds that file for the period. Current public instructions give no single earliest year covering every record class; ask staff about the particular era and type, and whether a non-digitized file or another custodian should be checked.
What happens after you file a DPS records request
DPS handles permit-record requests through its own online form under the Maryland Public Information Act. The steps below come from the DPS Records Request Process page.
- Log in or create an account, then complete the online request form with as much detail as you have. You’ll get a confirmation notice and a service request number. Keep that number for follow-up.
- A permit technician is assigned and checks whether fees apply. Research, retrieval and copying are free for the first two hours, and an additional fee applies after that. DPS tells you about any fee before it copies anything.
- Pay any outstanding fees in full. DPS won’t release records until they’re paid.
- When DPS says the records are ready, pick them up or review them within two weeks. After that the request is cancelled without a refund.
DPS provides permit documents that already exist. It won’t create a custom record or summary to answer a request. The MC311 DPS records page says DPS processes information requests within 30 days of receipt. For questions about a pending request, DPS Records lists 240-777-6283 on its Contact DPS page.
If the property is inside city limits, DPS sends you to the city instead. Its records page lists the City of Rockville at 240-314-5000 and the City of Gaithersburg at 301-258-6330.
Read a result as a stage, not a verdict
A data-search entry may point to an application or issued permit. Issuance shows authorization to start the permitted work; it does not alone prove a passed final inspection or a Certificate of Occupancy. Request the later record by name if that outcome matters. Our final-inspection status guide separates those stages. If an old address returns nothing, try a known application number or address variant before filing a request, but do not infer that no permit was issued. The County’s records process exists partly because an online result and an underlying file are not the same thing.
In nearby Anne Arundel County, planning and permit files use different record numbers; see how to search Anne Arundel LUN planning records.
If a Montgomery County permit file waits on a fire approval, the inspecting office may be county or state. Our guide to Maryland fire inspection records shows how to find the right custodian.
Official Montgomery County DPS and MC311 records pages checked October 20, 2026.
If the property is across the line in Prince George’s County, permits run through a different system; our Prince George’s Site/Road permit guide explains which system holds a given record.
Buying a newly built home in the county? Our Montgomery County new home builder lookup covers builder registration and the county new home warranty.
For electrical work, our Montgomery County MD electrical permit lookup shows how often permits reach a final inspection and how to finish one that expired.
For commercial space and townhouses, the county’s use and occupancy records are covered in our Montgomery County use and occupancy certificate lookup.
More from our permit data: what public permit records show across seven places.