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Can You Build Two ADUs on One Lot in King County?
Two ADUs Per Lot: What the Law Says Under Washington State’s HB 1337, King County and most jurisdictions in Washington must allow at least two accessory dwelling units on any…
APEX-DADU PublishingMar 22 No comments -
DADU Setback Requirements: Side Yard, Rear Yard, and Street-Facing Rules
What Are Setbacks and Why Do They Matter? Setbacks are the minimum distances your DADU must maintain from property lines, streets, and other structures. In King County, setback rules ensure…
APEX-DADU PublishingMar 22 No comments -
Common DADU Permit Mistakes and How to Avoid Them
Permit Mistakes Cost Time and Money Every DADU permit mistake adds weeks to your timeline and dollars to your budget. King County’s permitting process is thorough — reviewers check structural…
APEX-DADU PublishingMar 21 No comments -
How Long Does It Take to Get a DADU Permit in King County?
The Short Answer: 3 to 8 Months Most DADU permit applications in King County take 3 to 8 months from submission to approval. That’s a wide range, and where your…
APEX-DADU PublishingMar 21 No comments -
Understanding DADU Zoning Rules in Unincorporated King County
Zoning Basics: Where Can You Build a DADU? In unincorporated King County, zoning determines what you can build on your property — and DADUs are no exception. Thanks to Washington…
APEX-DADU PublishingMar 20 No comments -
DADU Sewer vs. Septic: What King County Homeowners Need to Know
Sewer or Septic: Why It Matters for Your DADU One of the first questions any King County DADU project must answer is whether your property connects to public sewer or…
APEX-DADU PublishingMar 20 No comments -
Navigating the King County DADU Permit Application Process
Before You Apply: Pre-Application Research The single biggest mistake DADU applicants make is submitting before they’ve done their homework. A few hours of pre-application research can save you months of…
APEX-DADU PublishingMar 19 No comments -
Step-by-Step: The DADU Building Process From Design to Move-In
The Timeline: What to Expect Building a DADU in King County typically takes 10–18 months from your first phone call to move-in day. That timeline breaks down roughly as: Feasibility…
APEX-DADU PublishingMar 7 No comments -
HB 1337 and Your Property: How Washington State Law Made DADUs Easier to Build
What Is HB 1337? House Bill 1337 is Washington State legislation that fundamentally changed the rules around accessory dwelling units — including DADUs. Passed to address the state’s housing shortage,…
APEX-DADU PublishingMar 3 No comments -
King County DADU Setback and Size Requirements Explained
Why Setbacks and Size Limits Matter Before you design a DADU — or even dream about one — you need to understand the physical constraints your property imposes. Setback requirements,…
APEX-DADU PublishingFeb 27 No comments
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