A Washington short plat needs boundary and site information for the proposed division, followed by the survey and documents required for final approval and recording. Start with the reviewing city or county’s checklist. The lot count and submittal requirements vary by jurisdiction.
Confirm the approval path before drawing the lots
Washington law defines short subdivisions around four or fewer lots and allows specified local ordinances to extend the limit to nine. In unincorporated King County, county guidance distinguishes two to four rural lots from up to nine urban lots.
Those counts do not establish how many buildable lots a particular property can support. Zoning, access, drainage, utilities and site constraints still have to be evaluated.
If the objective is only to move an existing boundary without adding a lot, first read our boundary line adjustment versus short plat guide. It may be a different application altogether.
Assemble the information for preliminary review
- Property records: parcel numbers, the vesting deed and legal description, a current title report and the referenced easement documents.
- Survey records: prior surveys, plats, boundary adjustments and available monument or adjoining boundary information.
- A proposed arrangement: intended lot count, access, likely building areas and space needed for shared facilities.
- Site information: available topography, utility records, drainage information and known critical-area constraints.
- The local requirements: preliminary submittal checklist, required supporting studies and the next review milestone.
The surveyor can use those materials to define the boundary and mapping work. The planner and civil engineer should assess the proposed arrangement alongside that work. A driveway, drainage facility or utility easement can change the lot geometry; it is cheaper to examine that relationship before the layout advances.
Keep preliminary and final work distinct
The preliminary package presents the proposed division for review. It may require planning, engineering and specialist information beyond the survey drawing.
The final short plat must reflect the approved layout and applicable conditions. Its survey work can include final lot dimensions, easements, dedications, monuments and required certificates. The team also has to satisfy the reviewing jurisdiction’s requirements for improvements, assurances, signatures and recording.
For example, King County requires its final short plat to be prepared by a Washington-licensed professional land surveyor. Its package should not be treated as the checklist for a project inside a separate city.
Give the team a sequence it can work from
Identify the boundary questions first, then coordinate the proposed lot arrangement with access and civil design. Track conditions of preliminary approval so final survey work is prepared against the correct layout.
Terrane’s guide to coordinating survey and engineering explains the early handoff. For short plat surveying, provide the jurisdiction, property records and intended division at the outset. Those inputs allow the scope to address the actual route from concept to recording.
