Existing Conditions & As-Built Site Plans for California Properties

A Drafting Record, Not a Certification

In construction practice, "as-built" is often used for drawings that document conditions after work has been completed — but the term is used differently by different clients and agencies. For our service, an as-built site plan means a drafting record of existing property conditions based on the records, measurements, photographs, surveys, and other source information provided or available.

What It Does Mean

A professional CAD organization of the documented existing conditions — using available records, photos, measurements, and survey information as inputs, with source limits communicated honestly.

What It Does Not Mean

It does not mean SitePlan California independently certifies every dimension in the field. It does not mean a legal boundary survey has been performed, and it does not convert unverified information into verified professional survey data.

If an authority requires certified record drawings, a licensed survey, or engineer-stamped as-builts, that requirement must be handled according to the applicable professional and jurisdictional rules.

A Foundation for Many Types of Property Work

An existing-condition drawing can become the foundation for many types of property work. Establishing one coordinated site base can reduce repeated research and conflicting assumptions as the project develops.

Working Without a Current Survey

When a current professional survey is not available, the project may rely on a combination of records, photographs, measurements, aerial references, existing plans, and information supplied by the owner or contractor.

Photographs help confirm visible site features; measurements help document the size of patios, walkways, or decks; contractor markups may identify changes not shown in public records. A dimension supplied by the client is shown as a project input — never represented as though it were independently surveyed by the drafter.

As-Built Site Plan vs. Land Survey

A land survey is a regulated professional service in California. The California Board for Professional Engineers, Land Surveyors, and Geologists grants authority to practice land surveying to qualified licensees. An as-built drafting plan can use a survey as a source, but it is not automatically a survey — that distinction matters most when exact property lines, easements, monuments, topography, or legal boundary relationships control the project.

A Cleaner Base for Correction Responses

Permit reviewers sometimes request clearer documentation of what already exists. An updated existing-condition plan can help reorganize the project — the current property is documented first, then the proposed work is layered onto a cleaner base, often making it easier to address comments related to setbacks, structure locations, access, or conflicts between sheets.

If the jurisdiction is asking for proof that an existing improvement was legally permitted, a new drawing alone does not establish permit history — permit records and other agency documentation may still be required.

What You Can Expect From the Drafting Scope

A typical deliverable can include a clean existing-condition site plan in PDF format, with CAD/DWG source files when included in the agreement. The plan can serve as a base for later proposed-work drawings or be used as project documentation within its stated scope.

The drawing should not be presented to a third party as a professional land survey, engineering certification, or legal boundary determination unless that work was actually performed by the appropriate licensed professional. Clear scope language protects the owner, the project team, and the usefulness of the drawing.