Property And Boundary

Property & Boundary Surveys in Sonoma, Marin & Napa Counties

Every property transaction, dispute, or improvement project starts with the same question: where does the line actually fall? BC Land Surveying's Property & Boundary services give you a clear, defensible answer, backed by licensed Professional Land Surveyors and 80+ years of combined field experience. Whether you're settling a boundary question with a neighbor, preparing a parcel for sale, adjusting a lot line, or documenting an easement, our surveys hold up under scrutiny, from title companies to county recorders to the courtroom. We work directly with property owners, developers, real estate professionals, and government agencies throughout Sonoma, Marin, and Napa Counties. No guesswork, no vague qualifiers, just precise, thoroughly documented boundary work you can build on with confidence.

Our Property & Boundary Services

Property boundaries touch nearly every stage of land ownership, from buying and selling to building and dividing. Our Property & Boundary services cover the full range of surveys and documentation needed to confirm or formalize a parcel's legal limits, giving you the accuracy and paperwork your project, transaction, or dispute requires.

01

Boundary Surveys

We determine or confirm your property's legal boundary lines through deed research, field measurements, and monument verification, giving you a clear, defensible record before you build, sell, or dispute a line.

02

Record of Surveys

Once boundary lines are confirmed, we file a Record of Survey with the county, a permanent public document that protects your parcel's legal description for future transactions.

03

ALTA Surveys

Our ALTA surveys meet the strict standards commercial real estate transactions require, giving title companies, lenders, and buyers the documentation they need to close confidently.

04

Lot Line Adjustments

Need to shift a boundary between adjoining parcels? We prepare the survey and documentation required to formally adjust lot lines and stay compliant with county requirements.

05

Easement Descriptions and Maps

We prepare precise legal descriptions and maps for access, utility, and drainage easements, protecting the rights and responsibilities tied to shared corridors on your property.

06

Legal Descriptions

Every deed and title document depends on an accurate legal description. We write precise, court-ready descriptions that hold up through transactions, permits, and disputes.

07

Certificates of Compliance

We prepare Certificates of Compliance that verify a parcel was legally created under the Subdivision Map Act, clearing the way for financing, development, or sale.

08

Plot Plans & Site Maps

Our plot plans and site maps graphically depict your parcel's boundaries, structures, and features, giving permitting agencies and design teams the visual reference they need.

Aerial view of a rural roadside lot with mapped boundary markers, trees, fields, and a winding highway.

WHY CHOOSE US

Why Northern California Property Owners Choose BC Land Surveying

Boundary and property work leaves no room for error. A misplaced line can hold up a permit, complicate a sale, or reignite a dispute with a neighbor. BC Land Surveying builds every project on licensed expertise, careful research, and field work that gets it right the first time. Not every parcel comes with clean records. When deeds conflict, monuments are missing, or an old survey doesn't match the ground, our team works through the discrepancy and finds a documented path forward instead of letting your project stall. Our team holds 80+ years of combined experience and includes Professional Land Surveyors who understand what title companies, county recorders, and courts actually require. We're responsive too, reach out with a question and you'll get a real answer. Property owners, developers, and real estate professionals across Sonoma, Marin, and Napa Counties choose us because our data holds up and our work moves projects forward.

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ALTA Surveys Explained: What Buyers and Lenders Actually Need

June 3, 2026
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Frequently Asked Questions

Property and boundary questions come up constantly across Sonoma, Marin, and Napa Counties. Here are answers to the ones we hear most often from owners, buyers, and developers.

  • How do I know if I need a boundary survey?

    If you're planning to build near a property line, install a fence, resolve a disagreement with a neighbor, buy or sell a parcel, or split a lot, a boundary survey gives you a documented, legally defensible answer instead of a guess based on old fences or assumptions. Many disputes and permit delays trace back to boundary lines that were never professionally confirmed. A current survey protects you before a disagreement or a project stalls, and it's often required by lenders, title companies, or county planning departments before work can move forward.

  • How much does a boundary survey cost?

    Cost depends on the parcel, not a flat rate. Lot size, terrain, how far back the last recorded survey goes, and whether adjoining property research is needed all factor in. A small residential lot with clean records costs less to survey than a large or rural parcel with conflicting deeds or missing monuments. We'll discuss your property's specifics with you before quoting anything, so the number you get reflects the actual work involved, not a guess.

  • Can old fences or landscaping determine my actual property line?

    Not necessarily. Fences, hedges, and other physical markers are often placed based on assumption, convenience, or agreements made decades ago, and they can drift from the recorded legal boundary over time. Only a licensed survey, based on deed research, recorded maps, and precise field measurements, can confirm where your legal property line actually falls. Relying on a fence line alone can lead to costly surprises during a sale, a building project, or a dispute.

  • How long does a Property & Boundary survey take?

    Timelines vary based on parcel size, terrain, the age and clarity of existing records, and whether adjoining property research is required. Straightforward boundary surveys on well-documented parcels can move quickly, while larger or more complex properties, or those with conflicting historical records, take longer. We'll give you a realistic timeline upfront based on your specific property, and we stay responsive throughout so you're never left guessing where things stand.

  • What's the difference between a boundary survey and a Record of Survey?

    A boundary survey is the fieldwork and research process we use to determine or confirm your property's legal lines. A Record of Survey is the resulting map we file with the county, creating a permanent public record of those findings. Not every boundary survey requires a filed Record of Survey, but for many transactions, disputes, and development projects, having that recorded document strengthens your legal position and makes future reference easier for you, your title company, or a future buyer.