Olympia, WA · zoning record
The dimensional standards that govern what you can build in the RMU district, straight from Olympia's ordinance, with every figure quoting its source. Check a specific address to see how these rules apply to a real lot.
Free · Every figure cited · Read from the current code (2026-09-21)
These are the letter-of-the-law limits for the base RMU district. Overlays (historic, neighborhood plan, and similar) can tighten them; a specific address check resolves the overlays that actually apply.
Required space from the front line.
“MINIMUM FRONT YARD SETBACKS | 20’ except: 5’ for agricultural buildings with farm animals | 10’ | 10’ | 10’, 5’ for agricultural buildings with farm animals | 10’, 5’ for agricultural buildings with farm animals | 10’, 5’ for agricultura…”18.04.080(H) 18.04.080(I) Minimum of 20 feet from front property line adjacent to a street to vehicle access to garage or carport · Olympia code · read 2026-09-21
Required space from the rear line.
“MINIMUM REAR YARD SETBACKS | 10’ | 10’ | 10’ | 10’ | 10’ | 10’ | 10’ | 10’ | 10’ except: 15’ for large multifamily | 10’ except: 20’ next to an R 4-8 or R 6-12 district | 5’ except: 20’ for structures 35’ or higher | 5’ | 5’ | 5’ except:…”18.04.080(D) 18.04.080(F) 18.04.080(H) 18.04.080(I) · Olympia code · read 2026-09-21
Share of the lot that may be hard surface.
“MAXIMUM IMPERVIOUS SURFACE COVERAGE | 45% or 10,000sf (whichever is greater) = lots less than 4 acres; 6%=4.1 acre or more | 35% | 6% | 2,500 SF or 6% coverage whichever is greater. | 55% | 55% | 65% | 65% | 65% | 75% | 85% | 85% | 65% 2…”18.04.080(K) 18.64.080 · Olympia code · read 2026-09-21
Every figure above is quoted verbatim from the current ordinance. We never substitute a typical-for-zone default: a field absent from the record shows nothing, not a guess.
See how these standards resolve on a specific parcel, with the overlays that actually apply, in about 20 seconds.
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