Maryland Building Permit Timelines & Delays
Maryland regulates construction through the Maryland Building Performance Standards (MBPS), established under Md. Code, Public Safety §12-501 et seq. and administered by the Department of Labor. The state adopts the model I-Codes (currently the 2021 editions, effective May 29, 2023) as a statewide floor, but permitting, plan review, and enforcement are entirely local: jurisdictions may add amendments within limits and must implement each updated MBPS within 12 months of state adoption.
Maryland permitting, the figures
The key published figures for this jurisdiction — each cited to its official source.
What the data shows
Maryland adopts the I-Codes statewide as the Maryland Building Performance Standards (currently the 2021 editions, effective May 29, 2023), but permitting, plan review, and enforcement are entirely local, and jurisdictions may amend within limits (Md. Public Safety §12-503).
There is no statewide statutory permit shot clock: §12-503 sets code-adoption deadlines but no deadline for a local jurisdiction to decide a permit, so review timelines are set locally as targets or dashboard metrics (Md. Public Safety §12-503).
The signature overlay is the Chesapeake Bay Critical Area, a 1,000-foot regulated zone landward of tidal waters (with a 100-foot buffer inside it) that adds state and local environmental controls and often overlaps federal wetland jurisdiction near the Bay (Md. Natural Resources §8-1801 et seq.; COMAR Title 27).
Maryland is building permit-timing transparency: a 2024 law (HB 131) requires every jurisdiction of 150,000 or more residents to report mean and median permit-processing times to the state each year, covering the large counties and Baltimore City (Maryland HB 131, 2024).
Montgomery County's DPS publishes a live, regularly updated permit-turnaround dashboard, the clearest measured source in the state, though the specific day-counts render inside the live dashboard rather than as a fixed figure (Montgomery County DPS). Maryland authorized about 16,823 units in 2024, roughly 35% multifamily (U.S. Census, 2024).
Most delay accumulates before technical review
The data points to the same lever everywhere: most delay accumulates before technical review, in completeness and resubmittal cycles. Permittable's Permit Review Diagnostic checks your plans against applicable codes and common reviewer issues before you submit — so your package is more likely to clear on the first pass.
Maryland permitting: FAQ
Does Maryland have a statewide building code?
Yes, as a floor. Maryland adopts the model I-Codes statewide as the Maryland Building Performance Standards (currently the 2021 editions), but enforcement is local: counties and municipalities issue permits, review plans, may add amendments within limits, and must implement each updated standard within 12 months (Md. Public Safety §12-503). So the code is uniform; the administration and speed are local.
Is there a deadline to get a permit in Maryland?
Not at the state level. Public Safety §12-503 sets deadlines for adopting code editions, but it imposes no statewide deadline for a local jurisdiction to approve or deny a permit. Timelines are local targets. A 2024 law (HB 131) does, however, now require larger jurisdictions to publish their mean and median permit-processing times, which makes those local timelines easier to compare.
What is the Chesapeake Bay Critical Area?
It is a 1,000-foot regulated overlay landward of Maryland's tidal waters and wetlands, with a tighter 100-foot buffer inside it, established under Md. Natural Resources §8-1801 et seq. and implemented through COMAR Title 27. Within it, development faces additional state and local controls (and often overlapping federal wetland review), so projects near the Bay carry an environmental layer on top of the ordinary building permit.
How long do permits take in Maryland?
It varies by jurisdiction, since each runs its own review. Montgomery County publishes a live DPS dashboard of plan-review and issuance turnaround, and under the 2024 HB 131 law, jurisdictions of 150,000 or more residents now report their mean and median permit-processing times annually (Montgomery County DPS; Maryland HB 131). Those reports are the place to find current measured day-counts for a specific county.
Sources
All figures on this page are drawn from Maryland Building Performance Standards (Md. Public Safety §12-501 et seq.) & the Chesapeake Bay Critical Area — Maryland Dept. of Labor / Dept. of Natural Resources. Maryland adopts the I-Codes statewide as the Maryland Building Performance Standards (currently the 2021 editions, effective May 29, 2023), but permitting, plan review, and enforcement are local, and jurisdictions may amend within limits and must adopt each update within 12 months. There is no statewide permit shot clock; a 2024 law (HB 131) now requires large jurisdictions to publish mean and median permit times. The distinctive overlay is the Chesapeake Bay Critical Area (Md. Natural Resources §8-1801 et seq.; COMAR 27). www.labor.maryland.gov/labor/build/buildcodes.shtml. Specific tables, reports, and pages are cited inline with each figure above.
Maryland has no statewide permit shot clock; the §12-503 deadlines govern code adoption, not permit decisions. The MBPS figures are statutory framework, not measured turnaround. Montgomery County's dashboard and the HB 131 county reports are real, authoritative measured sources, but the specific day-counts live in live dashboards and county filings rather than a single fixed figure, so none is quoted here. The 16,823-unit figure was verified directly from the U.S. Census Building Permits Survey 2024 state file (26th nationally; ~35% in 5+ unit buildings).