Washington Survey Guide
This Washington Survey Guide explains how boundary surveys, Records of Survey, topographic surveys, ALTA surveys, easements, encroachments, monuments, legal descriptions and subdivision work can affect vacant land, development property, property value and selling land in Washington State.
Washington has specific laws and technical standards governing land surveying and the recording of certain survey work. Understanding the difference between a county parcel map, title documents and a professional survey can prevent expensive assumptions.
Why Surveys Matter for Washington Land
A professional survey can establish or reestablish boundaries, identify monuments and help locate easements, improvements and other physical features relevant to a parcel.
County parcel maps are not boundary surveys
Assessor maps, GIS parcel viewers and aerial overlays are useful research tools, but they should not be treated as definitive evidence of where a legal boundary lies on the ground. County mapping can be approximate.
If the exact boundary, corner position or an apparent encroachment matters to a transaction or development decision, a Washington-licensed professional land surveyor may be needed.
- Survey work can establish or reestablish property corners and boundary lines.
- It can identify improvements that appear to cross a boundary.
- It can help place recorded easements and access rights on the ground.
- Topographic work can support engineering and development feasibility.
Survey, title and GIS records answer different questions
A survey addresses physical location and measurements. Recorded deeds, easements and other title documents establish legal language and rights. Assessor and GIS systems are primarily research and mapping tools.
For example, a survey may help locate a recorded access easement on the ground, but the recorded easement instrument should still be reviewed for its legal description, rights, restrictions and other terms.
Important note
This guide is educational and is not legal, surveying, engineering, title or permitting advice. Parcel-specific questions should be confirmed by the appropriate licensed professional, title company, attorney or government agency.
Washington Survey Law and Professional Standards
Washington does not treat boundary surveying as informal map work. State statutes and regulations establish recording requirements and minimum standards for professional land-boundary surveys.
Survey Recording Act
Chapter 58.09 RCW is Washington's Survey Recording Act. It establishes requirements concerning survey records, monuments, filing and related survey evidence.
Minimum survey standards
Chapter 332-130 WAC contains Washington's minimum standards for land boundary surveys and geodetic control surveys, along with guidelines for preparing land descriptions.
Licensed professional work
Professional land surveying is regulated in Washington. When a definitive boundary determination or professional boundary marking is required, the work should be handled by a Washington-licensed professional land surveyor.
Finding pins is not the same as determining a legal boundary
Existing monuments can be important evidence, but evaluating whether those monuments correctly control a boundary requires professional analysis of records and field evidence. A visible pin or fence should not automatically be assumed to establish the legal property line.
When Is a Record of Survey Required in Washington?
Not every survey automatically requires a new Record of Survey. However, RCW 58.09.040 makes recording mandatory in specified circumstances after certain boundary corners are established, reestablished or restored.
Examples identified in the statute include a corner that materially varies from the record, establishment of one or more previously nonexistent property corners, boundary-description ambiguity that could reasonably produce alternate line or point positions, and reestablishment of certain lost government corners.
Where the statute applies, the Record of Survey generally must be filed with the county auditor within 90 days. Washington law also contains circumstances in which a Record of Survey is not required, so the recording question is survey-specific.
What can a recorded survey show?
A Washington Record of Survey can preserve important evidence about the work performed, including monuments and corners, bearings and distances, the surveyed tract's legal description, ties to relevant recorded surveys and information needed to interpret the surveyed lines and points.
For a seller or buyer, an older recorded survey may answer questions that otherwise would require additional research or field work.
- Which monuments were found or established?
- How was the surveyed boundary interpreted?
- Are adjoining recorded surveys referenced?
- Does the survey reveal a discrepancy worth investigating?
Check Whether a Survey Already Exists
Before paying for a new survey, it can be worthwhile to search the county's recorded survey, plat and property-document records. A prior Record of Survey may already contain useful boundary evidence.
Identify the parcel
Start with the APN, legal description and county where the property is located.
Search surveys and plats
Check county recording resources for Records of Survey, plats, short plats and related map documents.
Review title documents
Compare deeds, easements and other recorded instruments with the survey information you locate.
Define the remaining question
If the records do not resolve the boundary, access or development issue, discuss the appropriate survey scope with a licensed surveyor.
King County example
King County states that recorded private-property surveys from 1973 forward can be researched through its recording system, while also noting that a recorded survey does not exist for every parcel. Other Washington counties maintain their own recording and survey-record systems.
Common Survey Work for Washington Property
The appropriate scope depends on the question being answered. Boundary, topographic, commercial-title and subdivision work serve different purposes.
| Survey Type / Work | What It May Address | Why It Matters |
|---|---|---|
| Boundary Survey | Property boundaries, corners, monuments and boundary evidence. | Useful when lines, corners, fences or neighboring improvements are uncertain. |
| Topographic Survey | Elevations, contours, slopes and physical site features within the survey scope. | Supports grading, drainage, engineering and development design. |
| ALTA/NSPS Land Title Survey | Detailed survey information coordinated with title matters for qualifying commercial transactions. | Often used when lenders, title insurers or commercial parties require a defined survey standard. |
| Short Plat / Subdivision Survey Work | Existing and proposed lot geometry, corners and other information required for land-division review. | Survey work is part of the process, but the survey itself does not approve or legally create lots. |
| Easement Location | Physical location of access, utility, drainage or other easement descriptions when included in the survey scope. | Helps compare recorded rights with actual site conditions. |
| Construction Survey | Layout and control for buildings, roads, utilities, grading and other improvements. | Used as approved development moves into construction. |
A survey does not replace land-use approval
A boundary or subdivision survey can establish and map geometry, but creating legal lots also requires the applicable city or county land-division process. Zoning, access, utilities, critical areas and local development standards still matter.
Boundary Lines, Corners and Encroachments
Fences, driveways, sheds, retaining walls and landscaping do not necessarily establish the legal boundary. Boundary analysis can require deeds, plats, prior surveys, monuments and field measurements to be considered together.
- Are the property corners identifiable and supported by survey evidence?
- Does a fence or improvement appear to cross a surveyed line?
- Does a driveway lie on the parcel or within a recorded easement?
- Does the legal description correspond with the survey evidence?
Why uncertainty affects a sale
A potential encroachment or uncertain line can affect usable area, setbacks, development layout, title review, financing and buyer confidence.
Some issues are minor; others warrant professional survey, title or legal review before the parties rely on a particular boundary position.
Survey Location vs. Legal Easement Rights
A survey can help locate an access, utility, drainage or shared-driveway easement on the ground when the recorded description and survey scope allow it. But the survey does not replace the recorded instrument that creates or defines the legal right.
For land diligence, both pieces may matter: the recorded document for the legal language and the survey for how that description relates to the physical property.
- Does the easement legally benefit the parcel?
- Where is the easement located on the ground?
- Does the existing road or driveway fit within it?
- Are width, maintenance or use restrictions important?
- Do utilities have separate recorded rights?
Related access and utility research
Survey issues often connect directly to title, legal access and utility routing. Review those subjects together rather than assuming a mapped road or utility line creates a legal right.
Why Survey Information Matters for Development Land
Builders and developers often need reliable geometry and site information before serious design. Survey work can interact with zoning, setbacks, roads, utilities, stormwater, topography and environmental constraints.
Setbacks & Site Area
Accurate boundary geometry helps determine how development standards fit the actual parcel.
Topography & Grading
Topographic information supports grading, drainage, retaining-wall and civil-design analysis.
Utilities & Stormwater
Survey data can support utility routing, easements and stormwater design.
Critical Areas
Wetlands, streams, slopes and buffers may need professional delineation or mapping in relation to surveyed property boundaries.
Land Division
Short plats and subdivisions require survey work plus the applicable local approval process.
Acquisition Diligence
Better survey evidence can reduce uncertainty about what a buyer can realistically develop.
When Might Survey Work Be Worth Considering?
A new survey is not automatically the best first expense. Start with the problem that needs to be solved and check existing records before commissioning work.
| Situation | Why Survey Information May Matter | Seller Consideration |
|---|---|---|
| Boundary dispute | A neighbor, fence, driveway or improvement may conflict with the claimed boundary. | Professional boundary work may clarify the evidence before negotiations. |
| Unknown corners | The parties cannot reliably identify the parcel on the ground. | Check recorded surveys first, then determine whether field work is warranted. |
| Development parcel | A builder needs reliable dimensions, topography or site-control information. | The seller or buyer may commission survey work depending on deal structure. |
| Access issue | A private road or easement location is unclear. | Review both the recorded easement instrument and physical survey location. |
| Subdivision potential | Land division requires accurate geometry and local approval. | Survey work supports the process but does not substitute for subdivision approval. |
| Direct sale | The seller may prefer not to incur survey expense before knowing buyer interest. | A buyer may accept survey uncertainty and investigate during feasibility. |
Can You Sell Washington Land Without a Current Survey?
Often, yes. A current survey is not automatically required for every land sale. The practical question is whether unresolved boundaries, access, easements, encroachments or development uncertainty materially affect the transaction.
Some sellers commission survey work before marketing. Others prefer to let a buyer investigate during feasibility rather than spend money before they know whether the parcel fits a buyer's criteria.
- Search for existing recorded surveys and plats first.
- Disclose known issues accurately rather than guessing at boundaries.
- Use appropriate professionals when the transaction depends on a definitive answer.
How Goan reviews survey-related land issues
Goan Properties Limited begins with the parcel number, public records, available maps, title clues, road frontage, access, zoning, utilities, critical areas and surrounding development.
If existing survey or title documents are available, send them with the parcel. You do not need to commission a new survey before requesting an initial property review.
Continue Your Washington Land Research
Survey questions often overlap with access, utilities, wetlands, feasibility and development review.
Use the Washington Land Directory
The Washington Land Directory connects Goan Properties Limited pages by county, city, property type, seller situation and land-resource topic.
About this guide
Published by Goan Properties Limited as an educational resource for Washington landowners evaluating survey, boundary, easement, title, and development questions. This guide explains common survey concepts, recorded surveys and plats, boundary and topographic work, parcel records, easements, and why survey information can affect land transactions and development feasibility. Goan Properties Limited is not acting as a licensed land surveyor; property boundaries, monuments, survey requirements, and survey conclusions should be confirmed by a qualified Washington land survey professional when appropriate.
Frequently Asked Questions About Land Surveys in Washington
These are general starting points. A parcel-specific survey, title, legal or local-government review may still be necessary.
Do I need a survey before selling land in Washington?
Not always. A survey may become important when boundaries, access, easements, encroachments or development potential are unclear, but some buyers perform survey work during feasibility.
Does every Washington survey have to be recorded?
No. Washington law requires a Record of Survey in specified circumstances, and also provides exceptions. Whether recording is required depends on the survey work performed and applicable law.
When does Washington require a Record of Survey?
RCW 58.09.040 identifies circumstances including certain newly established or materially varying corners, boundary-description ambiguity and reestablishment of certain lost government corners. When the statute applies, filing is generally required within 90 days.
Where can I look for an old recorded survey?
Start with the county recording or auditor system where the property is located. Search by legal description, parcel information, survey records, plats and short plats as the local system allows.
Can I use a county parcel map to establish my boundary?
County GIS and assessor maps are useful research tools, but they are not substitutes for a professional boundary survey when the exact legal boundary must be determined on the ground.
Does a fence prove the property line?
Not necessarily. A fence can differ from the legal boundary. Boundary determination may require professional review of records, monuments and field evidence.
Can a survey show an easement?
A survey can help locate an easement when the survey scope and recorded description allow it. The recorded easement document should also be reviewed because it contains the legal language defining the right.
Can a survey create new legal lots?
Not by itself. Survey work is part of many short-plat and subdivision processes, but legal lot creation also requires the applicable city or county land-division approval.
What is a boundary survey?
A boundary survey is professional survey work used to establish or reestablish the boundaries of real property using applicable records, evidence, monuments and measurements.
What is a topographic survey?
A topographic survey documents elevations, contours and physical site features within its scope and can support engineering, grading and development design.
Can survey uncertainty affect land value?
Yes. Uncertain boundaries, access, encroachments or usable site area can increase diligence risk and influence what a buyer is willing to pay.
Should I order a new survey before contacting Goan?
No. Send the parcel number, address and any survey or title documents you already have. We can begin with a preliminary review before you decide whether additional survey work is worthwhile.
Not Sure Whether a Survey Issue Affects Your Land?
Send us the parcel number, address and any survey or title documents you already have. Goan Properties Limited can review the available information and determine whether the property may fit our acquisition criteria.