Now covered in more depth
Renton, WA has evolved significantly over the past decade, from a Boeing company town into a diverse, growing city with a thriving residential market along its Lake Washington shoreline and hillside neighborhoods. Piper Cole Architects serves Renton homeowners with full-service residential architecture.
Renton Architecture Services
ADU Design:
Renton’s larger lots in the Highlands and Kennydale areas are well-suited for DADUs. Strong rental demand from Boeing and Amazon employees
Home Additions:
Second stories and primary suite additions on Renton’s diverse housing stock
Custom Homes:
New construction on infill lots and larger parcels in the Renton Highlands
Lakefront Design:
Properties along Lake Washington’s south shore offer premium design opportunities
Renton ADU Opportunity
Renton is one of the most affordable entry points for ADU investment in King County. Lower land values mean better ROI on ADU construction. 1-bedroom ADU rents: $1,600-$2,200/month. Strong demand from south Eastside employment centers.
Planning a project?
Wondering what an ADU on your lot would cost?
Send David the address and a few lines about what you want. The first feasibility check is free and usually takes about a day: what the site and the code are likely to allow, and what to check first.
Architect since 1996, member of the AIA and NCARB. Three Masonry Excellence Awards for commercial projects; the Carr residence was featured in Above The Lake and Lux magazines.
Renton Permit Process
City of Renton Community and Economic Development: 4-8 weeks for standard residential permits. Renton has online permit submission and a well-organized development services department.
free feasibility check, call 425-753-6452
Authoritative sources
Regulatory requirements referenced in this guide are set by the official agencies below. Rules change, always confirm current requirements with the source:

