Translate
Boundary or lot line adjustment - Land use permit process
About
A Boundary Line Adjustment or BLA allows legal transfer of ownership and minor relocation of property boundaries or merging lots for any recorded or unrecorded, subdivided parcel. Changes in lot configurations may also be allowed provided the building site remains within the original parent parcel. See also Affidavit of Correction and Subdivisions.
BLAs are administered by the Department of Local Services, Permitting Division (Permitting). Legal authority Chapter 19A.28 (minor adjustments) of the King County Code covers this permit.
Includes activities to correct property line or setback encroachments, to create better lot design, or to improve access without creating substandard lots or setbacks.
Cost and timeline
Check the current fee schedule for an estimate of costs
The timeline is 90 days for processing the plan.
Applications
Use our boundary line adjustments packet found below, or on our Permit forms, application materials, and resources page.
The Boundary Line Adjustment application is available online through MyBuildingPermit.com.
Schedule a land use inspection
King County inspects work to ensure code compliance and safety requirements.
Boundary Line Adjustments
Handouts
Boundary Line Adjustment Permit
Boundary Line Adjustment: Procedures Following the Approval Process
Residential Building Permit Agencies, Who does what
Legal Lot Status
Proof of Legal Lot Information
Legal Lot Status Determination Service
Boundary Line Adjustment: Title Page Template
See, Computer Aided Design (CAD) Templates and Other Data Resources packet
Property Research Guide and Worksheet
Forms
Boundary Line Adjustment Permit
Available on MyBuildingPermit.com
Critical Areas Compliance Affidavit
Boundary Line Adjustment Owner Information
Applicant Status
Public Agency, or Public Utility or Private Utility
Corporation or Business Association
Boundary Line Adjustment: Seattle - King County Public Health Department
Application for Review of Boundary Line Adjustment or Rezone