How much does deck addition cost in Washington?
Washington, DC · District of Columbia · 22 ZIP codes · Data updated May 2026
A deck addition in Washington typically costs $10,481 - $30,386, with most homeowners paying around $18,576. Washington runs about 5% above the District of Columbia median, and quotes can vary up to 114% between its cheapest and most expensive ZIP codes, so the neighborhood matters as much as the contractor.
It's a strong investment here: homeowners in this region recoup roughly 83% of the cost at resale, about $15,400 on a typical Washington job.
September is high-demand season for deck addition in this climate. Contractors in District of Columbia are booking about 5 weeks out, and rates run about 8% above the annual average, so off-season quotes come in lower.
Washington Cost Range
$10,481 - $30,386
Typical: $18,576
Strong ROI
Equity Gain
$15,400
Added at resale
on a typical Washington job
High season · ~5 wk contractor lead time
Deck Addition Cost by ZIP Code in Washington
Each ZIP gets its own estimate from local home values and labor rates. Open yours for the full breakdown, seasonality, and ROI detail.
| ZIP | Estimated range | vs. city average | Details |
|---|---|---|---|
| 20006 | $10,481 - $14,180 | -34% | Full estimate → |
| 20019 | $10,481 - $14,180 | -34% | Full estimate → |
| 20020 | $10,481 - $14,180 | -34% | Full estimate → |
| 20024 | $10,481 - $14,180 | -34% | Full estimate → |
| 20032 | $10,481 - $14,180 | -34% | Full estimate → |
| 20036 | $10,481 - $14,180 | -34% | Full estimate → |
| 20004 | $11,379 - $15,396 | -28% | Full estimate → |
| 20005 | $13,326 - $18,029 | -16% | Full estimate → |
| 20017 | $14,374 - $19,447 | -9% | Full estimate → |
| 20037 | $14,374 - $19,447 | -9% | Full estimate → |
| 20018 | $14,673 - $19,852 | -7% | Full estimate → |
| 20009 | $15,272 - $20,662 | -3% | Full estimate → |
| 20002 | $16,320 - $22,080 | +3% | Full estimate → |
| 20011 | $16,470 - $22,283 | +4% | Full estimate → |
| 20001 | $16,919 - $22,891 | +7% | Full estimate → |
| 20010 | $18,566 - $25,119 | +18% | Full estimate → |
| 20012 | $21,112 - $28,563 | +34% | Full estimate → |
| 20003 | $22,010 - $29,778 | +39% | Full estimate → |
| 20008 | $22,309 - $30,183 | +41% | Full estimate → |
| 20007 | $22,459 - $30,386 | +42% | Full estimate → |
| 20015 | $22,459 - $30,386 | +42% | Full estimate → |
| 20016 | $22,459 - $30,386 | +42% | Full estimate → |
Frequently Asked Questions
How much does a deck addition cost in Washington?
Based on 2026 data, a deck addition in Washington, DC costs $10,481 - $30,386, with a typical price around $18,576. The range covers Washington's 22 ZIP codes and the ±15% variance between contractor bids.
Is a deck addition worth it in Washington?
Homeowners in this region typically recoup about 83% of the cost at resale, roughly $15,400 on a $18,576 project. That makes it one of the stronger-returning projects you can do here.
Why do deck addition quotes vary across Washington?
Local home values and labor rates differ by ZIP code. In Washington, the same project can cost up to 114% more in the most expensive ZIP than in the least expensive one. Check your exact ZIP below for a precise range.
Other Project Costs in Washington
Sources: Remodeling Magazine Cost vs. Value, Zillow ZHVI, BLS construction wages, US Census. Methodology