ADU Rules in Tacoma, WA — 2026 Guide
Check if your Tacoma property qualifies for an ADU in 20 seconds
Tacoma ADU Rules at a Glance
Tacoma is considered ADU-friendly. Here are the key regulations.
- Tacoma allows up to two ADUs per single-family lot.
- Detached ADUs allowed up to 1,000 sqft.
- No owner-occupancy requirement under current code.
- Impact fees waived for ADUs in many areas.
What ReadyPermit Checks for Tacoma Properties
Enter any Tacoma address and get an instant ADU feasibility analysis covering:
Zoning Compliance
Verify your Tacoma lot is zoned for ADU construction under current WA and local rules.
Setbacks & Coverage
Check required setbacks, lot coverage limits, and height restrictions for your specific parcel.
ADU Size Limits
Calculate the maximum ADU square footage allowed based on your lot size and primary dwelling.
Permit Requirements
Understand what permits and approvals Tacoma requires before you can break ground.
Flood & Hazard Zones
Identify if your property falls in a flood zone, fire zone, or other hazard overlay.
Lot & Parcel Data
Pull parcel boundaries, lot dimensions, and existing structures from county records.
Check Your Tacoma Property Free
Enter your address below. In under 20 seconds you will know if your Tacoma lot qualifies for an ADU — no phone calls, no waiting.
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