Detached Garage Construction Cost in Bethesda, MD
Based on 41 detached garage construction building permits filed in Bethesda between 2015 and 2026, the typical declared project value is $36,150, with most landing between $21,000 and $65,000. These are real records from Bethesda's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Recent detached garage construction permits in Bethesda
Actual filings from Bethesda's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-01-15 | $52,000 | Constructing a new detached garage on the right side of the main building. |
| 2024-07-11 | $21,000 | Detached garage; Mixed work type permit: ADD 1260 square feet, DECK 34 square feet [PT] |
| 2024-06-05 | $15,000 | Revision 1 - Revise permit and approved plans to show new layout for the bathroom. ,Custom |
| 2024-04-11 | $25,750 | Customer Wants To Use ePlans,REBUILD DAMAGED AREA, CONSTRUCT NEW GARAGE 551 sqft, add a ne |
| 2024-02-01 | $30,000 | Customer Wants To Use ePlans,The purpose of this application is to be referred for a varia |
| 2023-11-29 | $36,400 | Customer Wants To Use ePlans,Proposed detached garage |
| 2023-10-20 | $18,000 | Customer Wants To Use ePlans,New Garage (Detached - One Vehicle) and Add New Deck Landing |
| 2023-09-18 | $62,000 | Mixed Use: Add/Alter Demoing existing window well. Creating a covered front porch and inst |
| 2023-09-11 | $100,000 | Conversion of existing detached garage into an accessory dwelling unit. No added footprint |
| 2023-08-15 | $20,000 | Construction of a new detached garage in place of existing |
| 2023-06-08 | $65,000 | Customer Wants To Use ePlans,We are applying for a building permit for a detached garage ( |
| 2022-11-28 | $15,000 | Customer Wants To Use ePlans,Construction of new garage with second-floor rec room. Upper |
| 2022-11-25 | $50,000 | Revision 1012993 - Renovate existing detached garage and new exterior opening header. No e |
| 2022-10-04 | $65,000 | Revision 2 - Extend proposed addition second floor 7'x16'-6"" above existing first floor. |
| 2022-07-06 | $50,000 | Renovation to basement to include larger rec room, new bedroom, new media room Renovation |
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Add your price →How to read these numbers
A permit's declared value is the job cost the owner or contractor stated when they pulled the permit. It tracks the real cost of the work but can run a bit under what was actually paid, since it often leaves out some labor and finish costs. Treat the range as a grounded starting point. What detached garage construction actually costs in Bethesda comes down to home size, materials, and scope.
Where this comes from
Every figure is pulled from Bethesda's public building-permit records and classified by the work described. Nothing is estimated or AI-generated. How the data works. The moment a Bethesda homeowner adds a real receipt, this page upgrades to show what neighbors actually paid next to these permit values.
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