Retaining Wall Cost in Washington DC 2026
Retaining Wall in Washington DC costs between $5,109 and $23,842 in 2026, with the average around $11,070. Washington DC pricing runs 70% above the US national average. Construction of a retaining wall with excavation, a gravel base, poured concrete or block, reinforcement, and drainage behind the wall. Includes backfill and grading.
What retaining wall includes in Washington DC
Construction of a retaining wall with excavation, a gravel base, poured concrete or block, reinforcement, and drainage behind the wall. Includes backfill and grading.
Typical time on site: 3 to 5 days. Local labor rate: $41/hour for an experienced concrete pro.
What changes the price of retaining wall in Washington DC
- Wall length and height
- Block versus poured concrete
- Drainage system
- Excavation and backfill
- Soil and slope conditions
A retaining wall quote priced off statewide averages will be off by 10 to 20 percent for Washington DC, because the metro has its own labor pool, material delivery distances, and permit timelines.
Washington DC climate and demand for concrete
Humid subtropical; freeze-thaw cycles; historic preservation drives material choices
Washington DC permits for retaining wall
Building department: DC Department of Buildings (DOB). https://dob.dc.gov
Typical permit cost: $400 - $4,500 residential. Inspection time: 10-25 business days. Washington DC rule: DC DOB and DCRA have strict historic preservation review (HPRB). License + basic business license required. DC has no state taxes but has its own sales tax (6%).
District of Columbia sales tax and licensing for Concrete
District of Columbia sales tax: 6% (no local addition). Real property labor not taxable; TPP repair labor is taxable.
State license: DC Department of Consumer and Regulatory Affairs, required: $390 (basic business license).
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