A property survey is a legally recognized measurement of your land that defines its exact boundaries, identifies structures on the lot, and flags any encroachments or easements. A basic residential boundary survey costs $400–$800, takes one to four weeks, and can prevent disputes that cost far more to resolve in court. Here is what every homeowner and home buyer needs to know.
For more on homeownership costs and responsibilities, see the Homeownership Guide 2026.
Types of Property Surveys
Not all surveys serve the same purpose. Knowing which type you need — and which your lender or local government requires — prevents ordering the wrong one.
| Survey Type | Purpose | Typical Cost | When You Need It |
|---|---|---|---|
| Boundary survey | Locates and marks property lines | $400–$800 | Buying a home, fence installation, adding a structure |
| ALTA/NSPS survey | Comprehensive; required by title companies for commercial transactions | $2,000–$5,000+ | Commercial real estate; some lenders for high-value residential |
| Topographic survey | Maps elevation, contours, and drainage features | $500–$1,500 | Construction, grading, landscaping projects |
| Location survey | Shows where the home sits on the lot | $300–$600 | Some mortgage lenders require this at closing |
| Construction survey | Guides placement of structures during building | $1,000–$3,000 | New construction, major additions |
| Subdivision survey | Divides a larger parcel into individual lots | $2,000–$10,000+ | Creating new lots, splitting inherited land |
When Is a Property Survey Required?
A survey is required in these common situations:
- Mortgage closing (some lenders) — Many lenders require a location survey or ALTA survey to confirm the property exists as described and no structures cross lot lines.
- Building permits — Most municipalities require a survey or site plan before issuing permits for additions, fences, pools, or accessory structures.
- Boundary disputes — A new survey by a licensed surveyor is the primary legal evidence used to resolve disputes with neighbors over fence or structure placement.
- Refinancing — Some lenders require an updated survey if the property has changed since the last one.
- Selling land — Real estate transactions involving raw land or large parcels typically require a current survey.
Even when not required, getting a boundary survey before purchasing a home is strongly advisable.
Worked Example: Why a Survey Matters
Scenario: You buy a house with a fence already installed. You do not order a survey. Three years later, you want to add a shed along the back fence line. A neighbor challenges the fence location.
You hire a surveyor for $600. The surveyor discovers the existing fence is 4 feet inside your property — the neighbor has been using 4 feet of your land. Your lot is smaller than you assumed, and the shed placement you planned is now in question.
Without the survey at purchase, you accepted this boundary as-is. With it, you could have negotiated with the seller, required the fence to be moved, or priced the encroachment into the purchase.
The $600 survey at closing could have saved thousands in legal fees.
What a Boundary Survey Includes
A licensed land surveyor will:
- Research public records — deeds, plat maps, prior surveys, county records
- Locate original survey monuments — iron pins or concrete markers set at lot corners during subdivision
- Measure the property — using GPS, total station instruments, or traditional transit/tape methods
- Set new monuments if originals are missing or disturbed
- Produce a plat or survey drawing showing all boundaries, dimensions, structures, easements, and encroachments
- File the survey with the local recorder’s office (required in many states)
The final document — the survey plat — is a legal instrument. It shows the exact dimensions of your lot and the position of all improvements.
How to Read a Property Survey
A survey plat contains several key elements:
- Bearings and distances — each boundary line is described by its compass direction (e.g., “N 45°23'10” E") and length (e.g., “125.34 feet”)
- Monuments — symbols showing found iron pins (existing markers) or set iron pins (newly placed)
- Easements — areas where utilities or neighbors have legal rights of access across your land
- Encroachments — structures (fences, driveways, overhanging eaves) that cross property lines
- Lot area — total square footage or acreage of the parcel
- Title block — surveyor name, license number, date, and legal description of the property
You do not need to understand bearings to benefit from a survey — the surveyor can walk you through anything unusual.
Easements — What They Mean for Your Property
An easement is a legal right for someone else to use part of your property for a specific purpose. Common easements include:
- Utility easements — electric, gas, water, and sewer lines that cross your lot; utility companies have the right to access these
- Drainage easements — shared drainage paths across your property
- Access easements — a neighbor’s legal right to cross your land to reach their property
- Conservation easements — restrictions on development negotiated with a land trust or government
Easements are real property rights that transfer with the land when you sell. They limit what you can build in affected areas and must be disclosed to buyers. A survey makes all recorded easements visible on the plat.
Encroachments — A Common Source of Disputes
An encroachment occurs when a structure crosses a property line. Common examples:
- A neighbor’s fence built 2 feet onto your land
- Your driveway overhanging the property line by 18 inches
- A tree overhanging the fence line (not technically an encroachment but legally complex)
- A deck or porch that extends past the lot line
Your options when an encroachment is found:
- Require removal as a condition of sale
- Negotiate a reduction in purchase price
- Accept an easement agreement that formally permits the encroachment
- Walk away from the transaction
This is why ordering a survey before closing gives you far more negotiating leverage than discovering a problem after you own the property.
How to Find an Existing Survey
Before hiring a surveyor, check these sources for an existing survey:
- Your closing documents — the seller may have provided a survey at the prior closing
- County recorder / register of deeds — subdivision plats are public records; search by legal description or lot number
- Title company — if you used title insurance, the title company may have a survey in the file
- Local assessor’s office — some counties maintain GIS maps with survey data
- The original surveyor — the firm that surveyed your subdivision may still have records and can often do an update cheaply
An existing survey more than 5–10 years old may no longer reflect current conditions (structures added, monuments disturbed). A licensed surveyor can review and update it rather than starting from scratch.
How to Hire a Licensed Surveyor
Only licensed land surveyors can produce legally recognized boundary surveys. To find one:
- Ask your real estate agent or title company for recommendations
- Search the National Society of Professional Surveyors member directory at nsps.us.com
- Check your state licensing board — all licensed surveyors are listed publicly
- Get at least two quotes for the same scope of work
What to ask when getting quotes:
- Is this a boundary survey or a location survey?
- Will you set new monuments if originals are missing?
- Will the survey be recorded with the county?
- What is your estimated turnaround time?
- Are there any potential issues (title defects, possible encroachments) based on the legal description?
Key Takeaways
- A boundary survey costs $400–$800 for a typical residential lot and can prevent far more expensive legal disputes
- A survey is legally required in some states for certain permits, and many lenders require one at closing
- Easements (others’ rights to use your land) and encroachments (structures crossing lines) only become visible through a survey
- Always search for an existing survey before ordering a new one — you may save significant money
- For broader home-buying context, see our guide to what earnest money is and the full Homeownership Guide
The content on Wealthvieu is for informational purposes only and should not be considered financial, tax, or investment advice. Consult a qualified professional before making financial decisions. Full disclaimer · Editorial policy