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A real Reference Map: the property outlined in red on an aerial photograph, with the recorded maps around it outlined in blue and corner records and control points labeled where they lie

The public record on a property, compiled into one map and one CAD file.

AEC First Phase compiles the public record on one property — the recorded surveys and maps around it, the corner records, the benchmarks, the zoning, the terrain — into a data package for surveyors, architects, engineers, contractors, developers and homeowners. Enter an address or parcel number and see what is on record, free. $5 takes the package home. It is data, as found, and it is not a survey.

Free to look with a free account $5 to take it home no card needed to run

Los Angeles County and nine more California counties

A real project screen: the property outlined in red, the recorded surveys and maps found around it drawn where they lie. Imagery © Esri, Maxar, Earthstar Geographics.

One address in. The records found, placed on the map.

This is the Reference Screen of a finished run: 1635 Woods Dr, Los Angeles — the Stahl House. It ships in the package as the Reference Map. The run found 7 records of survey, 10 tract maps, 12 corner records and 33 City survey control points on and around the lot, and drew each one where it lies.

The Reference Map for 1635 Woods Dr: an aerial map with the subject property in red, record outlines in blue and labeled corner records and control points, beside a list of the records by source

Swipe the image sideways to see all of it.

  1. The propertyOutlined in red, on the county’s parcel geometry.
  2. Recorded mapsEach blue outline is a record of survey or a tract map that covers the lot or lies beside it.
  3. Corner recordsPlaced at the monuments they describe. The nearest here is 40 feet from the lot.
  4. Survey controlCity of Los Angeles control points, each linked to the City’s field-book pages.
  5. The listEach record found, by source, with its distance from the lot. Each line opens the agency’s own copy.
  6. The sourcesOne tab per data source. The folders of the package carry the same names.
Open the sample project

Opens in your browser, with no account. AEC First Phase is not affiliated with this property or its owners. Imagery © Esri, Maxar, Earthstar Geographics.

An assessor’s map page: lots, lot numbers and dimensions drawn for assessment, with the tract and map book references
The assessor’s map page for the sample property’s block.

You probably don’t have a survey.

Most owners believe they have a survey. What they have is the assessor’s parcel map — and it says on its face that it is not a survey. AEC First Phase shows you what is actually on record for your lot: the recorded surveys and maps around it, the corner records, the benchmarks, the zoning, the terrain — placed on one map, with the distance from your property to each one.

Is there a survey of my property on file?

What’s in the package

One zip, organized by data source. These are the sample project’s own files — the whole package, exactly as it is delivered.

The compiled property map DXF open in the viewer: contours, lot lines, footprints and record outlines over the aerial, with its list of layers

The compiled CAD drawing DXF

The lot, the neighboring lot lines, building footprints, contours, the aerial and the outline of each record found, each on its own layer, on State Plane coordinates. Accurate, not precise. Not a survey.

What the CAD file holds, layer by layer

The top of the Property Report’s first page: address, APN, lot area, use, year built and zoning, with the aerial view and location map
A Property Report page listing the records of survey and tract maps near the parcel, each with its distance and a link to the agency

The Property Report PDF

What is on record, section by section, each one cited: identity and lot, zoning and land use, hazards and overlays as published, and the recorded maps and surveys near the parcel.

The site plan base sheet at 8.5 by 11 inches
8.5 × 11
The site plan base sheet at 11 by 17 inches: the lot and its neighbors with contours, an aerial view, a vicinity map, zoning notes and a scale bar
11 × 17
The site plan base sheet at 24 by 36 inches
24 × 36

Site plan base sheets three PDFs, shown here at one scale

The compiled map laid out to print: the site map at a stated scale with a scale bar and north arrow, the aerial view, a vicinity map and the zoning notes. Every sheet carries the line “Tentative – not survey accurate. Compiled from public agency records.”

The 3D massing model: hillside terrain with the surrounding buildings drawn as blocks and the subject building in red

The 3D massing model OBJ and DXF

The terrain from lidar with the buildings around the lot standing on it, from public building footprints and the heights they carry. The subject is in red. A massing model, not a survey.

A detail of a record of survey filed with Los Angeles County: lines with measured bearings and distances and notes on the monuments found
A detail of a recorded tract map: lots with their bearings and distances, between Woods Drive and Marlay Drive

The survey records themselves the agencies’ PDFs

The records of survey, tract maps, parcel maps and corner records the run finds on and nearest the lot, linked to the agency’s own copy. Tick the ones you want and the documents are added to the package.

What these records are

Also in every package

Property summary

Address1635 WOODS DR LOS ANGELES CA 90069
APN5556-031-003
JurisdictionCity of Los Angeles
ZoningRE9-1-HCR
Lot area12,386 sq ft
UseSingle Family Residence — 010G
Year built1959
Hazard & overlay flags
  • Santa Monica Mountains Zone
  • 300-Foot Habitat Buffer
  • Criterion 1 Protected Areas for Wildlife (PAWs)
  • Landslide
Records on file
County Surveyor Records 29 — Records of Survey 7 · Tract Maps 10 · Corner Records 12
City of LA Survey Records 33 — Control Points with Field Book 33

From the Property Report, as each agency published it. Flags are the hazards and overlays marked as applying to this parcel.

  • The Reference Map as a page: each record found, placed and linked. Start here.
  • Terrain contours and the aerial, on the same coordinates as the drawing.
  • Zoning and the hazard and overlay facts, as the agency publishes them.
  • A plain-text list of everything that was collected.
  • One folder per source, named for where the records came from.
  • The assessor’s map page, where the county publishes it as a file.

Compiled from public records, as found. Not a survey; sets no boundary. Verify before you rely on it — and hand it to your professional when it’s time.

See it work

A short silent loop of the sample project: the Reference Map, the compiled CAD drawing with its layers, the 3D massing model and the printable sheets.

1635 Woods Dr, Los Angeles. View-only, no account. AEC First Phase is not affiliated with this property or its owners. Imagery © Esri, Maxar, Earthstar Geographics.

Open the sample project

How it works

  1. Enter the address

    Or the parcel number. It is verified against the county parcel record and its jurisdiction identified, so the right records are searched automatically. You confirm the parcel and accept the acknowledgment and release; that starts the run.

  2. The record is collected

    Recorded surveys, parcel and tract maps, corner records, benchmarks, zoning and terrain around your site — about ten minutes, while you watch the checklist.

  3. Your Reference Screen

    Everything found, drawn at its true location. Pick what you want. $5 unlocks the property and the package downloads as one zip — and stays yours to come back to.

Who it’s for

Six ways in, and how each one uses the package.

Surveyors

Run the address the day the job comes in, unlock the package, start the boundary analysis from the DXF and the record set.

Architects

Open the DXF as the first base; replace it with a survey before design development.

Engineers & geologists

Open the DXF as the reference base for site analysis and coordinate with the survey before construction.

Contractors

Bid with fewer unknowns; keep the report in the job file.

Developers & land planners

Run every candidate address; unlock the ones worth a second look. Bring it to the feasibility conversation before anyone draws.

Homeowners

Open the CAD file in a free viewer (Autodesk Viewer online, DWG TrueView, or LibreCAD) and measure and annotate; drop the report into an AI assistant and ask what the zoning allows; hand the package to your architect, contractor or surveyor.

Price

$5per property

Running an address and the Reference Screen are free. One credit unlocks one property’s package for your account — every record you add later, every recompile and every download of that property is then free. No subscription.

Pricing, credit packs and refunds

Where it works

Los Angeles County and nine more California counties. Each name opens what is collected there.

What is collected, county by county

A schematic map of the ten counties

Los Angeles County is the deepest. In the other nine the package holds what each county publishes.

Start with an address.

Free to look with a free account $5 to take it home no card needed to run