Maryland Survey Guide

How to Find Property Lines in Maryland: SDAT, MDLandRec, Plats.net, and Surveys

Updated September 2, 2026 · 3 min read · Property Owner Questions

Quick answer

Search the address in Maryland SDAT, copy the deed's liber and folio, retrieve the deed through MDLandRec, and follow any plat reference into Plats.net. That chain gives you the record. If the boundary must be located or marked, use a Maryland-licensed land or property line surveyor.

Maryland has an unusually clear address-to-record path

The SDAT Real Property Search can identify the tax account and current deed reference. Maryland Courts explains that the first number is the liber and the second is the folio. Use those numbers in MDLandRec, the free record system operated by the Judiciary, elected circuit-court clerks, and State Archives.

If the deed refers to a plat, use Plats.net. The State Archives notes that tracing deeds backward is often the best way to find an older plat. This is more dependable than searching a parcel map for a drawing that may not be linked.

What each Maryland source contributes

What each Maryland source contributes
SourceUse it for
SDATAddress, account identifier, assessment record, and current deed reference.
MDLandRecVerified deeds, easements, and other recorded instruments affecting real property.
Plats.netLand-survey, subdivision, and condominium plat images.
County GISOrientation and local layers, not the final location of a boundary on the ground.

Maryland's two survey licenses matter

Maryland law recognizes a professional land surveyor and a licensed property line surveyor. The statutory definitions and permitted scope are in Business Occupations and Professions section 15-101. Rather than guessing from a company title, ask which licensed individual will be responsible and whether that credential covers the requested work.

For a boundary survey, fence line, corner marking, or encroachment, describe the exact on-the-ground result you need. For design, subdivision, topography, or work submitted to a public authority, confirm the broader deliverable and seal requirements before accepting the estimate.

Turn the records into a clean request

  • Attach the SDAT page, deed, and referenced plat.
  • Include the tax account, liber and folio, county, address, and any prior survey.
  • Photograph the fence, wall, drive, marker, or other feature prompting the question.
  • Ask what corners and lines will be marked and what signed plan is included.
  • If a dispute concerns ownership rather than location, consult a Maryland attorney.

Verify the person responsible

Use the Maryland State Board public query and check the credential status. The Maryland land surveyor directory can help you find firms by county. This guide explains how to assemble public records; it does not establish a boundary or give legal advice.

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Frequently Asked Questions

How do I find a Maryland deed by address?

Search the address in SDAT Real Property Search and note the liber and folio reference. Maryland Courts says that reference can then be used to retrieve the deed through MDLandRec.

Where are Maryland subdivision and survey plats online?

The Maryland State Archives provides Plats.net for land survey, subdivision, and condominium plats. The deed or SDAT record may contain the plat book and page needed for the search.

Who can determine a Maryland property line?

Maryland licenses both professional land surveyors and property line surveyors, with different statutory scopes. Confirm which credential and deliverable fit your project through the State Board's public lookup.