Guides
ADU Architect in Seattle, WA Backyard Cottages & Garage Conversions
ADU architect in Seattle, WA. Piper Cole Architects designs and permits backyard cottages and garage conversions across the city.
David Meade · July 3, 2026
ADU Cost Guide: Seattle Eastside 2026
What an ADU really costs in Kirkland, Bellevue, Redmond and Sammamish, by type, with an estimator and city permit fees. Call David on 425 753 6452.
David Meade · July 2, 2026Seattle ADU Permit Timeline 2026: What to Expect
How long does it really take to permit an ADU in Seattle in 2026? Phase-by-phase timeline with realistic numbers from Piper Cole Architects in Kirkland.
David Meade · July 1, 2026ADU Architect in Bellevue, WA DADUs, Garage Conversions & AADUs
What Bellevue actually allows for a DADU or attached ADU in 2026, what it costs to build, and how long permitting takes. Talk to the architect direct.
David Meade · June 30, 2026Washington ADU Laws 2026: Complete Guide for Seattle Eastside Homeowners
Washington ADU laws in 2026: a complete guide for Seattle Eastside homeowners on rules, size limits, and permits.
David Meade · June 30, 2026ADU Architect in Sammamish, WA
ADU architect in Sammamish, WA. Piper Cole Architects designs and permits DADUs, garage conversions, and backyard cottages on the plateau.
David Meade · June 27, 2026ADU vs DADU in King County (2026): Rules, Cost & Timeline
ADU vs DADU in King County for 2026 compare attached and detached units side by side, with rules, costs and typical permit timelines.
David Meade · June 22, 2026Garage Apartment Design in Seattle: ADU Over a Garage
A garage apartment combines parking and living space in one structure. Seattle design rules, costs, and how to add an ADU above a garage in 2026.
David Meade · June 1, 2026Building a Home Office ADU in Seattle: Design, Cost, and Considerations
A detached home office ADU gives Seattle remote workers true separation. Design strategies, costs, permit path, and dual-use flexibility for 2026.
David Meade · June 1, 2026Seattle Backyard Cottage (DADU) Complete Guide 2026: Design, Permits, Cost
Everything Seattle homeowners need to know about backyard cottages (DADUs) in 2026.
David Meade · June 1, 2026Two-Story ADU Design in Seattle: Maximizing a Small Footprint
Two-story DADUs let Seattle homeowners maximize living space on a small footprint. Design strategies, height limits, costs, and permits for 2026.
David Meade · June 1, 2026How Much Rental Income Can an ADU Generate in Seattle? (2026)
How much rent does an ADU generate in Seattle in 2026? Real income numbers, ROI analysis, and break-even timelines for backyard cottages and garage.
David Meade · May 30, 2026Bellevue, WA ADU Rules 2026: What You Can Build on Your Lot
Planning an ADU in Bellevue? Learn 2026 rules for DADUs and attached ADUs, including size, height, setbacks, parking, and key Seattle differences today.
David Meade · May 30, 2026Best Seattle Neighborhoods for ADU Development in 2026
Best Seattle neighborhoods for ADU development in 2026: zoning, lot size, rental demand, and appreciation potential analyzed by Piper Cole Architects.
David Meade · May 30, 2026Detached Garage Design in Seattle: Permits, Size Limits, and ADU Potential
Detached garage design in Seattle: size limits, setbacks, permits, and designing for future ADU conversion. By Piper Cole Architects.
David Meade · May 30, 2026
What a Garage Conversion Costs in Seattle
What a Seattle garage conversion costs, from office to full ADU, the permit and code work behind it, and an estimator for your garage. Call 425 753 6452.
David Meade · May 30, 2026Kirkland, WA ADU Rules 2026: What You Can Build on Your Lot
Complete guide to ADU rules in Kirkland, WA for 2026. Size limits, setbacks, height, permits, and how Kirkland rules differ from Seattle.
David Meade · May 30, 2026Seattle Accessory Structure Permit Guide: Sheds, Garages, Studios, and More
When do you need a permit for an accessory structure in Seattle? Sheds, garages, studios, carports: size thresholds, setbacks, and permit process.
David Meade · May 30, 2026Seattle DADU Rules 2026: Everything You Need to Know About Backyard Cottages
Complete guide to Seattle DADU rules in 2026. Size limits, setbacks, height, owner occupancy, parking, permits, and everything you need to know about.
David Meade · May 30, 2026Tiny Home Design in Seattle: What Is Legal, What It Costs, and Who It Is For
Tiny homes in Seattle 2026: what is legal, what it costs, and how an architect designs small ADUs that meet code.
David Meade · May 30, 2026ADU Design in Seattle and Kirkland, WA: A Complete Guide (2026)
A complete 2026 guide to ADU design in Seattle and Kirkland: types, sizing, permits, and cost.
David Meade · May 22, 2026
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