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Spokane, WALicensed & BondedPrice Match Guarantee
← ADUs & Additions

ADUs & Additions in Spokane, Washington.

Premier Construction & Design designs and builds accessory dwelling units and home additions throughout Spokane. Our team manages zoning review, City of Spokane permitting, structural design, and full build-out under one roof. Spokane eliminated traditional single-family-only zoning citywide, and duplexes, triplexes, fourplexes, and ADUs are now broadly allowed, which opened backyard cottages and in-law suites on lots that were off limits a few years ago. We walk owners through what their specific parcel allows, from South Hill infill near Manito Park to newer North Spokane neighborhoods where families are adding space instead of moving. Every project comes with transparent pricing, a clear timeline, and a one-year workmanship warranty.

— Spokane Services
ADU.

Related services we offer in Spokane.

  • → Detached ADUs and backyard cottages
  • → Attached ADUs, in-law suites, and basement conversions
  • → Garage conversions and garage-with-ADU-above
  • → Room additions: primary suites, offices, and family rooms
  • → Second-story additions and pop-tops
  • → Zoning, permitting, and site plan coordination
— Our Pricing Promise

We compete on quality — not by cutting corners.

If you receive a lower written bid from a licensed, bonded, and insured contractor for the same scope, materials, warranty, and timeline, we'll review it and match it where we can. Honest pricing, no games.

Eligible Projects

  • Roof replacements
  • Siding replacement
  • Flooring installation
  • Deck construction
  • Concrete pours
  • Exterior repairs
  • Defined kitchens & baths

Not Eligible

  • New construction
  • Full home remodels
  • Additions & ADUs
  • Structural reconfigurations
  • Multi-family builds
  • Commercial projects
  • Design-build projects
Price Match Guarantee

Bring us a qualifying written bid. We'll match it where we can, on residential projects under $25,000.

Applies to clearly defined-scope residential projects under $25,000 (before tax). Bid must be from a Washington-licensed, bonded, and insured contractor for identical materials, scope, warranty, and timeline.

Request a Quote →
— Free Spokane ADU Quote

Let's add space to your Spokane home.

Tell us about your Spokane ADU or addition project and we'll be in touch within one business day to schedule your free on-site estimate.

By submitting, you agree to be contacted by Premier Construction & Design about your project.