Basement Finishing Cost in Bethesda, MD
Based on 93 basement finishing building permits filed in Bethesda between 2015 and 2026, the typical declared project value is $24,000, with most landing between $20,000 and $50,000. These are real records from Bethesda's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Basement Finishing values over time in Bethesda
Median declared value moved from $23,000 in 2019 to $20,000 in 2025, down 13% over that span. Each year below is computed from the filings that actually cleared in Bethesda.
Recent basement finishing permits in Bethesda
Actual filings from Bethesda's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-04-06 | $20,000 | Basement finishing with bedroom, bathroom, laundry, family area and unfinished storage/mec |
| 2026-03-25 | $60,000 | Interior work only, Renovate existing unfinished basement. Move laundry, add full bath, ad |
| 2026-02-02 | $30,000 | Interior work only,1. Finish the unfinished basement area and create one new bedroom, one |
| 2026-01-22 | $100,000 | Interior work only, Renovate an existing unfinished basement space |
| 2026-01-13 | $20,000 | Partially finish basement to include wet-bar, TV area, office and unfinished mechanical ro |
| 2025-12-22 | $12,000 | Finished basement to provide new full Bathroom with pre fab Sauna |
| 2025-12-09 | $20,000 | Finish basement to include laundry area, family area, half bathroom, storage and unfinishe |
| 2025-05-20 | $15,000 | Finishing a basement with a bedroom and a bathroom. |
| 2025-05-14 | $30,000 | Interior work only,Finish existing basement. Basement already has a full bth that is |
| 2025-03-14 | $25,000 | Interior work only,Finishing the basement in a Single-Family house APPROVED FOR INTERIOR W |
| 2025-02-03 | $20,000 | Customer Wants To Use ePlans,Finish Basement to include Rec Area, Wet-Bar, Bedroom, Bathro |
| 2025-01-24 | $40,000 | Underpin center portion of existing basement. Reconfigure and refinish basement. |
| 2025-01-03 | $20,000 | Finish basement with Rec Room, Office, Bedroom, Bathroom and Unfinished Storage/MECH Room. |
| 2024-10-11 | $20,000 | Customer Wants To Use ePlans,Finish Basement with Rec Area, Office, Laundry, Bathroom, Unf |
| 2024-10-01 | $100,000 | Finished basement including bedroom and home theater area, |
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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 basement finishing 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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