Improvement Survey in San Antonio, TX
Need to know where every structure on your property sits relative to the property lines? An improvement survey from Alliance Land Surveyors documents all buildings, fences, driveways, and improvements — showing exactly how they relate to your boundaries, easements, and setbacks.
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What Is an Improvement Survey?
An improvement survey — sometimes called an improvement location certificate (ILC) — documents the location of all structures and improvements on a property relative to the boundary lines, easements, and setback requirements. It answers a critical question for buyers, lenders, and title companies: do all the structures on this property sit where they're supposed to?
In San Antonio, improvement surveys are one of the most commonly requested surveys for real estate transactions. Title companies need to know whether fences, garages, additions, pools, or driveways encroach on easements or cross property lines before they'll issue title insurance. Lenders want confirmation that the property matches its legal description and that no structures violate City of San Antonio setback requirements.
An improvement survey goes beyond a basic boundary survey by inventorying every permanent improvement and measuring its distance to each property line, easement, and setback. It's the survey that tells you whether the neighbor's fence is 6 inches on your side, whether your shed sits inside a utility easement, or whether your back patio violates the rear setback.
An improvement survey from Alliance includes:
Property boundaries — lines, dimensions, area, and corner locations established from deed research and field measurements.
All structures — house, garage, carport, shed, pool, deck, patio, retaining walls, and any other permanent improvements located and measured.
Fences and walls — location relative to property lines, showing whether they're on, inside, or outside the boundary.
Driveways, sidewalks, and paving — all hardscape mapped relative to boundaries and easements.
Easements — utility easements, drainage easements, and access easements plotted from recorded documents.
Setback lines — building setbacks per zoning or subdivision restrictions, showing whether improvements comply.
Encroachments identified — any improvement that crosses a boundary, extends into an easement, or violates a setback is clearly noted on the sealed plat.
Common Reasons for an Improvement Survey in San Antonio
Buying or Selling a Home
Title companies in San Antonio frequently require an improvement survey before issuing title insurance. Buyers get peace of mind knowing every structure sits where it should, and sellers avoid surprises at closing.
Refinancing
Lenders may require a current improvement survey to verify the property condition matches the title records. If your last survey is more than a few years old or improvements have been added since, a new survey is typically needed.
Planning an Addition or Pool
Before you design an addition, pool, or detached structure, you need to know where your setbacks and easements are. An improvement survey shows exactly how much room you have to build without violating restrictions.
Encroachment Disputes
If a neighbor's fence, driveway, or structure appears to be on your property — or yours on theirs — an improvement survey provides the objective evidence to resolve it. What to do if your neighbor is building on your land.
Building Permits
The City of San Antonio permitting office may require an improvement survey to verify setback compliance and easement clearance before issuing a building permit for additions, garages, or accessory structures.
Insurance Requirements
Some insurance carriers request an improvement survey to verify building location, flood zone status, and proximity to property lines — particularly for high-value or historic properties.
Improvement Survey vs. Other Survey Types
Not sure which survey you need? Here's how an improvement survey compares to other surveys San Antonio homeowners commonly request.
| Feature | Boundary Survey | Improvement Survey | ALTA/NSPS Survey |
|---|---|---|---|
| Property lines & corners | Yes | Yes | Yes |
| All improvements located | No | Yes — every structure | Yes |
| Distances to property lines | No | Yes — measured | Yes |
| Easements plotted | Basic | Yes | Comprehensive |
| Setback lines shown | No | Yes | Per Table A |
| Encroachments identified | No | Yes | Yes |
| Title commitment review | No | No | Yes |
| Certified to lender/insurer | No | Sometimes | Yes |
| Best for | Fences, corners, disputes | Closings, permits, additions | Commercial transactions |
| Starting cost | $400 | $400 | $1,500 |
Not sure which you need? Call (210) 369-9509 — we'll help you determine the right scope based on what your title company, lender, or project requires.
Improvement Survey FAQ — San Antonio
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Whether you need an improvement survey for a home closing, a refinance, a building permit, or to resolve an encroachment issue, Alliance Land Surveyors delivers accurate, RPLS-sealed plats that title companies and lenders accept.
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Know Where Every Structure Sits — Starting at $400
Improvement surveys for San Antonio closings, permits, and peace of mind.
