Short plat survey cost in Washington with 2026 county fees and surveyor quotes
A short plat is the Washington document that divides land into four or fewer lots (up to nine where a city or an urban growth area has raised the limit), and it has to be surveyed and signed by a licensed land surveyor. The surveyor's share for a two to four lot short plat usually runs $3,000 to $8,000. The public fees are the swing factor: the same split costs $600 to file in Sumner, about $7,000 to start in Seattle and more than $22,000 in unincorporated King County, before recording.
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Who needs a short plat survey, and what you are paying for
You need a short plat when you split one Washington parcel into two, three or four lots to sell, lease or build on them. RCW 58.17.020 defines a short subdivision as four or fewer lots, and lets a city or town raise that to nine by ordinance; a county planning under the Growth Management Act can do the same inside an urban growth area. Five or more lots outside those limits is a full subdivision with a preliminary and final plat, public hearings and a much longer clock.
The survey is not optional paperwork. Under RCW 58.17.060, when a local ordinance requires a survey it must be completed and filed with the short plat application, and the short plat is not approved until it is filed with the county auditor (RCW 58.17.065). The surveyor researches the deeds and earlier surveys, establishes the outer boundary, designs and sets the new lot corners, shows easements, access and any critical areas the planner asks for, and certifies the drawing. Any discrepancy the survey finds has to be noted on the face of the short plat under RCW 58.17.255.
One rule shapes every budget: land in a short plat cannot be divided again for five years without a full plat. If you think you may want a fourth lot later, design for it now, because the statute only lets the owner who filed add lots up to a total of four inside the original boundaries.
How much does a short plat cost in Washington?
The bill comes from three places: the surveyor, the city or county that reviews the short plat, and the county that records it. In Washington the review line, not the survey, is usually the biggest number.
| Line item | Typical cost | Paid to |
|---|---|---|
| Boundary survey, short plat map and new lot corners, 2 lots, clean records | $3,000 - $5,000 | Licensed land surveyor |
| Same for 3 or 4 lots, acreage, or an access easement or private road | $5,000 - $8,000+ | Licensed land surveyor |
| Topographic survey when the planner or engineer asks for one | $900 - $3,500 | Licensed land surveyor |
| Short plat review, city or county | $600 to $58,000+ (see the fee table) | City or county planning |
| Recording the approved short plat, 18x24 sheet | $423.50 King County; $428.50 Clark County | County auditor or recorder |
| Civil engineering for drainage, road or frontage | Separate quote when required | Civil engineer |
| Wetland or critical area report | From $2,500 on a small parcel | Biologist or wetland consultant |
Surveyor ranges are market ranges for 2026, not a quote. The review and recording figures come from each government's published 2026 schedule, listed below. Ask every surveyor you compare whether the price includes setting monuments at the new corners and one round of planner corrections; that is where quotes for the same plat work usually differ.
Short plat fees by Washington county and city
These are the short plat review fees from each jurisdiction's own fee schedule or application packet. Which one applies depends on whether your parcel sits inside a city or in unincorporated county land.
| Jurisdiction | Short plat review fee | Source |
|---|---|---|
| City of Sumner (Pierce County) | $600 flat | City short plat application |
| Snohomish County, unincorporated | $1,560 + $78 per acre + $78 per lot preliminary; $600 final approval; $1,800 final document check; $2,300 transportation review | County code 30.86.110 |
| Spokane County, unincorporated | $5,044.76 + $29.06 per lot preliminary; $2,898.04 + $29.06 per lot final | 2026 Land Use Fee Schedule BP-4P |
| City of Seattle (SDCI) | $7,064.25 at intake covering 10 review hours; $551 for each hour beyond that | 2026 Land Use Application Fee Requirements |
| King County, unincorporated, urban 2 lots (micro-subdivision) | $17,140 preliminary + $5,713 final plat approval | 2026 Fee Guide 09 |
| King County, urban 2 to 4 lots, simple | $39,063 preliminary + $12,297 final plat approval | 2026 Fee Guide 09 |
| King County, urban 2 to 4 lots, complex, or rural short plat | $45,840 preliminary + $17,141 final plat approval | 2026 Fee Guide 09 |
| King County, urban 5 to 9 lots | $57,948 preliminary + $26,340 final plat approval | 2026 Fee Guide 09 |
King County's preliminary figure covers planning, SEPA, fire, critical area and site engineering review; a minor resubmittal adds $2,057 for a micro-subdivision and $4,115 for the other short plats. Seattle adds a 5% technology fee on every charge and bills extra review hours at the hourly rate, so a short plat that needs corrections costs more than the intake figure. The same two-lot split carries $600 in review fees in Sumner and $22,853 in unincorporated King County. Confirm the current figure with the planning office before you budget; fee schedules change every January.
The same two-lot short plat priced in five places
Public review fees only, for splitting one house lot into two, from the 2026 schedules above. The surveyor, recording and any engineering come on top.
| Where | Preliminary | Final | Review fees total |
|---|---|---|---|
| City of Sumner | $600 flat | included | $600 |
| Snohomish County (1 acre parcel) | $1,794 + $2,300 transportation | $2,400 | about $6,494 |
| City of Seattle | $7,064.25 for the first 10 hours | hourly beyond 10 hours | $7,064 and up |
| Spokane County | $5,102.88 | $2,956.16 | $8,059 |
| King County, urban micro-subdivision | $17,140 | $5,713 | $22,853 |
Snohomish: $1,560 base plus $78 for one acre and $78 for each of 2 lots, plus the $2,300 transportation review, then $600 final approval and $1,800 final document check; a $480 pre-application conference is extra if you book one. Spokane: base fee plus $29.06 for each of 2 lots, at both stages.
What makes a short plat cost more or stall
Most overruns come from conditions the planner attaches, not from the survey drawing. Ask about each one before you sign a surveyor's quote.
- Critical areas. A wetland, stream, steep slope or their buffers on or near the parcel usually brings a consultant report and a survey that locates the flagged line. See what a wetland delineation costs before it surprises you.
- Water and sewer. Each new lot needs proof of water and either sewer or a septic design the health district will accept. A lot that cannot show either does not get approved, however good the survey.
- Access. A flag lot or shared driveway needs a recorded access easement and often a road maintenance agreement, both drawn on the short plat.
- Frontage improvements and dedications. Cities can require sidewalk, curb or right-of-way dedication as a condition, and RCW 58.17.060 tells them to consider safe walking routes to school.
- Correction rounds. Seattle bills $551 an hour past the first ten; King County charges $2,057 to $4,115 for a minor resubmittal. A surveyor who files short plats in your jurisdiction every month draws a map that clears review the first time.
- The five-year lock. Splitting into two lots now and two more later is not two short plats. Plan the final lot count on the first map.
Short plat vs boundary line adjustment vs administrative lot split
Three Washington tools look alike and are priced very differently. A boundary line adjustment moves a line between existing parcels without creating a new one, and RCW 58.17.040(6) exempts it from the plat rules entirely. King County charges $7,165 for a basic one in 2026, far less than a short plat, so if you are only fixing a fence-line problem or trading land with a neighbor, start with a lot line adjustment survey.
The newest option is the administrative lot split in RCW 58.17.145, added by the Legislature in 2025 (chapter 301, Laws of 2025). Cities must offer a process that creates one new residential lot by administrative decision, with no public hearing, as long as both lots meet the minimum lot size, the parent lot was not itself created by a lot split, water and sewer purveyors have certified availability, and access and utility rights are granted on or before recording of the lot split survey. The approved lot split survey must carry a note that no further lot split of either lot is allowed under that section. It applies in cities, not unincorporated county land.
Large rural tracts can fall outside the chapter altogether: RCW 58.17.040(2) exempts divisions where every lot is a 1/128 of a section or larger, or five acres or larger when the land cannot be described as a fraction of a section, unless the county has adopted an ordinance requiring plat approval for them. Many have. A surveyor who works your county will know which applies before you pay for anything.
How long does a short plat take in Washington?
1.
Pre-application check
Confirm zoning, minimum lot size, water, sewer or septic, and critical areas with the planning office. Snohomish County charges $480 for a pre-application conference; Seattle $1,102 for a pre-submittal meeting. This is cheaper than redesigning a rejected map.
2.
Survey and short plat map, 3 to 6 weeks
The surveyor pulls deeds and recorded surveys for your parcel and the neighbors, recovers corners, runs topography if required and drafts the short plat with the new lots, easements and notes.
3.
Preliminary review, usually 2 to 6 months
The planner circulates the application to engineering, fire, health and utilities and returns comments. Every correction round restarts part of that clock.
4.
Final short plat, 30 days by statute
RCW 58.17.140(2) requires final plats and short plats to be approved, disapproved or returned within 30 days from filing unless you agree to an extension. The surveyor sets the new monuments and finalizes the map before this stage.
5.
Record with the county auditor
The short plat is not approved until it is filed with the county auditor (RCW 58.17.065). King County charges $423.50 for an 18x24 sheet. Only then can the new lots be sold.
Short plat questions
How much does a short plat cost in Washington?
Plan on $3,000 to $8,000 for the surveyor on a two to four lot short plat, then add the city or county review fee, which in 2026 runs from $600 in Sumner to $22,853 for the smallest short plat in unincorporated King County, plus about $425 to record. Critical areas, engineering and correction rounds come on top.
How many lots can you create with a short plat?
Four or fewer under RCW 58.17.020. A city or town can raise the limit to nine by ordinance, and a county planning under the Growth Management Act can raise it to nine inside an urban growth area. Above the limit you need a full subdivision with a preliminary and final plat.
Do I need a surveyor for a short plat?
Yes, in practice always. Washington law requires plats to be surveyed by or under the supervision of a registered land surveyor who certifies the drawing, and local short plat ordinances require the survey to be filed with the application. The surveyor also sets the new lot corners.
How long does a short plat take?
Three to nine months is common from first survey to recording. The survey takes a few weeks, preliminary review is the long stage, and the final short plat must be acted on within 30 days of filing under RCW 58.17.140(2). Critical areas and correction rounds stretch it.
What is the difference between a short plat and a boundary line adjustment?
A short plat creates new lots. A boundary line adjustment only moves a line between existing lots and creates none, so it is exempt from the plat rules and usually cheaper. If the goal is a new buildable lot, you need a short plat or, inside a city, an administrative lot split.
Can I split my lot again after a short plat?
Not for five years without a full plat. RCW 58.17.060 requires that rule in every short plat ordinance. The one exception: if your short plat has fewer than four lots, the owner who filed it can alter it to reach a total of four within the original boundaries.
Where can I find recorded short plats in King County?
The King County Recorder's Office holds recorded short plats and surveys, and a title report on the parcel is the fastest way to see what has been recorded against it. A surveyor quoting your job will pull these records as part of the research.
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