Registered Professional Land Surveyors · Serving Texas & Louisiana since 1946(903) 581-2238 · Mon–Fri 8am–5pm
John Cowan & AssociatesLand Surveyors · Est. 1946
John Cowan & Associates total station on a tripod beside a pine-lined East Texas pond in the fall
Registered Professional Land Surveyors · Tyler, Texas

Every line,
exactly where it belongs.

Boundary, ALTA/NSPS, topographic and construction surveys for landowners, builders, title companies and public agencies across Texas and Louisiana.

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What we do

Survey services

The same level of service and personal attention, no matter the size of the project.

Boundary & Residential Surveys

Locate and monument your property corners, show improvements and encroachments, and provide field notes for closings, fences, and disputes.

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ALTA/NSPS Land Title Surveys

Surveys to the current ALTA/NSPS standards that give the title company and lender the location data needed to issue title and mortgage insurance.

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Topographic Surveys

A survey of natural and man-made features (buildings, fences, elevations, contours, trees, streams) used by engineers and architects to design a site.

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Construction Staking

Layout of improvements shown on approved plans to control construction of roads, buildings, utilities and pipelines.

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Elevation Certificates

FEMA Elevation Certificates for flood insurance rating, LOMA applications, and floodplain permitting.

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Subdivision Platting & Development

Subdivide a tract into lots with monumentation and survey data on a plat that conforms to state law and local ordinances.

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John Cowan & Associates total station set up under a large oak in an East Texas pasture, with the crew UTV nearby
Since 1946

A seasoned firm that keeps pace with the technology.

Founded by John Cowan in August 1946, we have surveyed everything from Hide-a-Way Lake to a 26.5-mile boundary at Fort Polk. Today our crews use robotic total stations and GNSS receivers, with CAD drafting in-house.

80years in practice
135lot subdivisions platted
60+ALTA sites in Texas

Our history and team →

How it works

From first call to signed plat

  1. Request a quote

    Send the address, parcel number and any deed or prior plat. Takes two minutes online.

  2. Written quote

    A licensed surveyor reviews records and sends a firm price and schedule.

  3. Fieldwork

    Our crew researches the chain of title, then locates and sets monuments on site.

  4. Signed & sealed

    You receive the sealed plat and field notes as PDF, with CAD files on request.

Service area

Every corner of Texas, plus Louisiana

Headquartered near Tyler since 1946, our crews work statewide, from the Piney Woods to El Paso, the Panhandle to the Rio Grande, and on into Louisiana.

North Texas
  • Dallas
  • Fort Worth
  • Grapevine
  • Plano
  • Frisco
  • McKinney
  • Little Elm
  • Denton
  • Sanger
East Texas
  • Flint Office
  • Tyler
  • Bullard
  • Whitehouse
  • Troup
  • Lindale
  • Jacksonville
  • Longview
Central Texas
  • Waco
  • Austin
  • San Antonio
Gulf Coast
  • Houston
  • Galveston
  • Corpus Christi
West Texas & Panhandle
  • Amarillo
  • Lubbock
  • Abilene
  • Midland
  • Odessa
  • Pecos
  • Alpine
  • Presidio
  • Terlingua
  • El Paso
  • Horizon City
Border
  • Eagle Pass
Louisiana
  • Shreveport
  • Alexandria
  • New Iberia
  • Lake Charles

Not listed? We regularly travel across Texas and Louisiana; just ask.

Interactive service area map, statewide Texas and Louisiana 106°W103°W100°W97°W94°W91°W27°N30°N33°N36°N TEXASLOUISIANASTATEWIDE COVERAGE
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Flint (HQ)

Our office at 10147 CR 135, Flint, just south of Tyler. Headquarters since 1946. Serving Smith, Cherokee, Henderson, Rusk, Van Zandt and Wood counties and beyond.

Need a survey? Get a written quote.

Send the address or parcel number and a licensed surveyor will prepare a written quote.

Request a Quote(903) 581-2238