Deck Installation Cost in Rockville, MD
Based on 1,007 deck installation building permits filed in Rockville between 2015 and 2026, the typical declared project value is $12,000, with most landing between $6,815 and $20,818. These are real records from Rockville's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Deck Installation values over time in Rockville
Median declared value moved from $12,250 in 2021 to $18,450 in 2026, up 51% over that span. Each year below is computed from the filings that actually cleared in Rockville.
Recent deck installation permits in Rockville
Actual filings from Rockville's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-06-11 | $15,760 | DECK |
| 2026-06-09 | $16,474 | Remove and replace open 18'x12' deck, a 4'x4' landing with stairs and a 4'x4' landing with |
| 2026-06-08 | $20,000 | Building open deck with privacy screen with no stairs ,New Deck |
| 2026-06-05 | $33,973 | Customer Wants To Use ePlans,Building a 2 level deck freestanding with landing and steps,N |
| 2026-05-26 | $15,000 | Repair or exactly replace existing deck due to damage - see site plan with details on exis |
| 2026-05-26 | $18,000 | Replacement of existing 12x17 deck and build new 12x17 deck with 4x4 landing and steps. Us |
| 2026-05-26 | $20,137 | Customer Wants To Use ePlans,BUILDING 16X20 FREESTANDING DECK,New Deck |
| 2026-05-11 | $50,000 | Addition of a Porch and a new L-Shaped deck with trex decking and railings. MIXED WORK TYP |
| 2026-05-05 | $18,900 | Construct 15' wide x 16' deep composite deck with steps and vinyl handrail.,New Deck |
| 2026-05-05 | $14,440 | Remodel 12ft x 17ft deck keeping deck framing and replacing structural parts, flooring and |
| 2026-04-24 | $19,698 | Building 2 small freestanding decks,New Deck |
| 2026-04-23 | $12,265 | building a deck 20x10,New Deck |
| 2026-04-17 | $19,000 | Replace existing 21x12 deck and add stairs to back yard.,Repair Existing DeckUSING MONTGOM |
| 2026-04-13 | $23,000 | Construct all pressure treated 30' x 14' deck with (2) sets of steps using MC Deck Details |
| 2026-03-31 | $50,877 | Building a freestanding deck irregular shape with steps and landing,New Deck |
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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 deck installation actually costs in Rockville comes down to home size, materials, and scope.
Where this comes from
Every figure is pulled from Rockville's public building-permit records and classified by the work described. Nothing is estimated or AI-generated. How the data works. The moment a Rockville homeowner adds a real receipt, this page upgrades to show what neighbors actually paid next to these permit values.
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