FastAsBuilt
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San Francisco Bay Area · San Mateo County

As-Built Plans in San Mateo, CA

Fast, field-verified measured drawings for homes and commercial spaces across San Mateo. Permit-ready PDF and editable CAD, typically delivered in 48–72 hours.

Get a San Mateo quote Order online
48–72h typical turnaround
1/8" measured accuracy
PDF + DWG deliverables

Turnaround times are estimates and may vary based on project complexity and scheduling.

Spanish Revival home representative of San Mateo, California
As-built plans in San Mateo

Measured drawings built on real San Mateo conditions

Before an architect sketches a single new wall in San Mateo, they need to know exactly where the existing ones are — that is what an as-built set delivers. San Mateo's tree-lined Baywood and San Mateo Park neighborhoods feature Spanish Revival and Tudor homes near a lively downtown.

Whether you are adding square footage, converting a garage, or preparing a property for sale, permit reviewers and trades all rely on drawings that match the building exactly as it stands today. The Bay Area is defined by Victorian and Edwardian homes, Craftsman and Eichler neighborhoods, and modern tech-era infill. Aging structures and seismic considerations make reliable as-built plans indispensable for remodels, additions, and unit conversions.

FastAsBuilt combines on-site laser measurement with senior CAD drafting to document existing conditions across San Mateo and the rest of San Mateo County. You get clean, dimensioned floor plans, elevations, and sections you can hand straight to your architect, designer, contractor, or the City of San Mateo Building Division.

San Mateo at a glance

  • Region: San Francisco Bay Area
  • County: San Mateo County
  • Permitting: City of San Mateo Building Division
  • 5+ neighborhoods served
  • Turnaround: 48–72 hours typical Turnaround times are estimates and may vary based on project complexity and scheduling.
Get a fixed quote
Why San Mateo owners order plans

Projects that start with accurate as-builts

Across San Mateo, the most common reasons property owners come to us are simple: they need drawings that reflect what is really there.

ADUs & garage conversions

Accessory dwelling units are booming in San Mateo. Precise as-builts of the existing structure are the first thing plan check wants to see.

Additions & remodels

Adding square footage or reworking a floor plan in San Mateo starts with drawings that match the current building exactly.

Historic remodels

San Mateo's older homes demand sensitive, accurate documentation before any renovation in a protected district.

Permit submittals

Additions, ADUs, and tenant improvements in San Mateo all require accurate as-built drawings for the building department.

Buying & selling

Realtors and owners in San Mateo use measured floor plans and verified square footage to market and close with confidence.

Insurance & records

Accurate documentation of your San Mateo property protects you for insurance, appraisals, and future planning.

As-built floor plan drawing and CAD software
Permitting in San Mateo

Drawings the City of San Mateo Building Division will accept

Bay Area jurisdictions combine some of the highest property values in the nation with strict, design-review-heavy permitting. Cities routinely require detailed as-built drawings for additions to older housing stock, and accurate documentation is critical where lots are small and every square foot is contested.

In San Mateo, plans for additions, accessory dwelling units, and tenant improvements are submitted to the City of San Mateo Building Division. Reviewers compare your proposed work against documented existing conditions, so an accurate as-built set is what keeps a project from stalling in plan check.

Our San Mateo drawings are prepared with California requirements in mind, including Title 24 energy documentation, current ADU regulations, and seismic considerations common to San Mateo County. That groundwork means fewer correction cycles and a faster path to approval.

Most San Mateo building departments will not begin a meaningful review without existing-condition drawings, because they establish the baseline for setbacks, egress, occupancy, and how much of a structure is being altered. California ADU law has made garage and accessory-unit conversions especially popular, and each of those projects hinges on documenting exactly what is there before new work is proposed. Starting with a verified as-built set is the single most reliable way to avoid a stalled permit in San Mateo.

Coverage

Neighborhoods we serve in San Mateo

Local crews and fast scheduling across San Mateo and the surrounding San Mateo County area.

Downtown San MateoSan Mateo ParkHayward ParkBaywoodShoreview

Don’t see your neighborhood? We almost certainly still cover it — just ask.

Local architecture

The buildings we measure in San Mateo

San Mateo mixes a lively downtown with established residential streets in San Mateo Park, Baywood, Hayward Park, and Shoreview, and the city’s architectural character leans strongly toward Spanish Revival alongside Tudor homes and other older Bay Area housing stock. In neighborhoods like Baywood and San Mateo Park, that often means irregular footprints, thick walls, curved entries, bay windows, porches, and additions layered onto the original house over time.

Those details matter when you need dependable existing-condition drawings. Older homes rarely measure cleanly from old listing sketches or legacy plans, and Bay Area houses often carry the usual complications of aging structures and seismic-era updates. FastAsBuilt documents what is actually there with on-site laser measurement, then our senior drafters turn the field data into permit-ready CAD files in PDF and DWG format. For San Mateo owners planning changes to character homes near downtown or larger properties in the city’s established neighborhoods, precise measurement is the foundation for design, pricing, and permitting.

Common projects

Why San Mateo owners need as-built plans

In San Mateo, we most often see owners order as-built plans before home additions, historic remodels, and ADU conversions. That fits the city well: established neighborhoods and valuable lots make it common to expand an existing house, rethink an older layout, or convert available space into a legal secondary unit. When a Spanish Revival or Tudor home has been altered over the years, verified plans help your architect and contractor start from facts instead of assumptions.

Measured drawings are especially useful when your project involves:

  • adding square footage to an older home in Baywood, Hayward Park, or Shoreview
  • remodeling a character house in San Mateo Park where existing conditions need to be documented clearly
  • planning an ADU conversion on a small Bay Area lot where every square foot counts

FastAsBuilt provides 2D As-Built Plans starting at $900 and 3D As-Built Plans starting at $1,500, with typical residential turnaround in 48 to 72 hours.

Permitting

Working with the City of San Mateo Building Division

When you submit plans in San Mateo, you can expect the City of San Mateo Building Division to need a clear picture of the existing structure before it reviews proposed changes. In the Bay Area, permitting for additions and remodels to older homes is often detail-heavy, and accurate base drawings help the review move forward with fewer questions about dimensions, wall locations, openings, and prior alterations.

That is why verified as-built plans matter so much here. FastAsBuilt measures your property on site with laser equipment and delivers permit-ready CAD files in PDF and DWG format, giving your design team reliable existing-condition drawings for additions, historic remodels, and ADU work in San Mateo.

What we deliver

Everything in your San Mateo as-built set

Every San Mateo project is field-measured and drafted to professional standards, then delivered in formats your whole team can use. We capture the building as it actually stands today — not as the original plans intended — so decades of past remodels, additions, and quiet modifications are all reflected in the final drawings.

  • Fully dimensioned, scaled floor plans of existing conditions
  • Exterior elevations and building sections where needed
  • Wall thicknesses, door and window sizes, and fixture locations
  • Reflected ceiling and roof plans on applicable projects
  • Print-ready PDF and editable CAD (DWG) files
  • Clean, standard layering your drafter can build on
Technician capturing existing conditions with a laser measuring device
Local expertise

We know San Mateo buildings

Our field technicians have measured enough of San Mateo County to know what San Mateo properties tend to hide. The Bay Area is defined by Victorian and Edwardian homes, Craftsman and Eichler neighborhoods, and modern tech-era infill. Aging structures and seismic considerations make reliable as-built plans indispensable for remodels, additions, and unit conversions.

We pair that field experience with submittal know-how. Projects in San Mateo route through the City of San Mateo Building Division, and our drawing sets are organized the way its plan checkers expect — dimensioned existing-condition plans, consistent layering, and clear notation of anything that affects setbacks, egress, or occupancy. Bay Area jurisdictions combine some of the highest property values in the nation with strict, design-review-heavy permitting. Cities routinely require detailed as-built drawings for additions to older housing stock, and accurate documentation is critical where lots are small and every square foot is contested.

How it works

Your San Mateo as-built, in four steps

1

Request a quote

Tell us the address and property details anywhere in San Mateo. We send a fixed quote fast.

2

We measure on-site

Our technicians capture the space with laser measurement tools across San Mateo.

3

We draft your plans

Existing conditions become precise, dimensioned drawings.

4

Receive & build

Get permit-ready PDF and DWG files, with revisions included.

Pricing

As-built plan pricing in San Mateo

Square-footage-based pricing, no hourly billing. 2D plans start at $900 and 3D plans start at $1,500 for San Mateo properties up to 1,500 sq ft — see your exact price and order online.

2D As-Built Plans

Field-measured, dimensioned 2D floor plans for any property.

$900starting price
48–72-hour delivery

Turnaround times are estimates and may vary based on project complexity and scheduling.

  • Starts at $900 (up to 1,500 sq ft)
  • Then $0.50 per sq ft above 1,500
  • Measured, dimensioned floor plans
  • Doors, windows & fixtures
  • PDF + DWG files
  • 1 revision included
Order 2D plans
Most Popular

3D As-Built Plans

A full 3D model plus measured 2D drawings of your property.

$1,500starting price
3–5 business days

Turnaround times are estimates and may vary based on project complexity and scheduling.

  • Starts at $1,500 (up to 1,500 sq ft)
  • Then $1.00 per sq ft above 1,500
  • 3D model + 2D floor plans
  • Elevations & sections
  • PDF + DWG + 3D model files
  • 2 revisions included
Order 3D plans

Custom Projects

For projects that need more than a standard as-built.

Reach out to us for a custom quote.
  • Additions & remodels
  • New construction
  • ADUs & garage conversions
  • SB9 lot splits & duplexes
  • Tenant improvements & commercial
  • Whatever your project needs — just ask
Reach out to us
Why San Mateo chooses FastAsBuilt

Precision that keeps your project on schedule

Re-measurements and correction cycles cost real money. We get the existing conditions right the first time so your San Mateo project keeps moving.

  • Fixed, transparent pricing with no hourly surprises
  • Laser-accurate field measurements
  • Editable DWG plus print-ready PDF deliverables
  • Drawings formatted for San Mateo County plan check
  • Revisions included on every order
  • Licensed, insured, California-based teams

Fast turnaround

Most San Mateo residential projects delivered in 48–72 hours.

Turnaround times are estimates and may vary based on project complexity and scheduling.

Verified accuracy

Every drawing double-checked against site data before delivery.

Trusted by pros

Contractors, architects, realtors, and property managers rely on us.

Reviews

What San Mateo area clients say

Real feedback from property owners and pros we've measured for across San Francisco Bay Area.

★★★★★
“Our Victorian had decades of quirky modifications. The field techs caught details other services missed, and the drawings reflected the house as it actually is.”
Grace F.
Oakland, CA · Victorian renovation
★★★★★
“SF plan check is unforgiving. These as-builts were dimensioned, layered, and formatted the way DBI expects, and our expediter had zero notes. That never happens.”
Tom D.
San Francisco, CA · Condo remodel
★★★★★
“We had no plans for our 1960s ranch house. FastAsBuilt measured it on a Tuesday and we had permit-ready PDFs and CAD by Friday. Our ADU project started on schedule because of it.”
Steven K.
San Jose, CA · ADU project
Nearby

Other cities we serve near San Mateo

AlamedaAlbanyAntiochAthertonBelmontBerkeley

Browse all California cities we serve →

Learn more

Guides to as-built plans

Helpful reading before you start your San Mateo project.

Read more on the blog →

FAQ

As-built plans in San Mateo: common questions

How much do as-built plans cost in San Mateo?

Pricing in San Mateo is based on square footage, not billed hourly. 2D as-built plans start at $900 and 3D as-built plans start at $1,500 for properties up to 1,500 sq ft, with a per-square-foot rate above that. You see your exact price instantly and can order online in minutes.

How fast can I get as-built drawings in San Mateo?

Once our technician has measured your San Mateo property, finished drawings usually land in your inbox within 48–72 hours. Turnaround times are estimates and may vary based on project complexity and scheduling.

Are your San Mateo as-built plans permit-ready?

Yes. Our drawings are formatted for submittal to the City of San Mateo Building Division and follow California conventions, so they are ready for plan check for additions, ADUs, and tenant improvements.

Do you provide editable CAD files for San Mateo projects?

Every order includes editable DWG files alongside print-ready PDFs, so your architect, designer, or contractor in San Mateo County can build directly on our drawings.

What kinds of San Mateo properties do you measure?

We document single-family homes, condos, multifamily buildings, and commercial spaces across San Mateo, including home additions, historic remodels, ADU conversions.

Do you serve neighborhoods throughout San Mateo?

We cover all of San Mateo, including Downtown San Mateo, San Mateo Park, Hayward Park, Baywood, plus nearby San Mateo County communities. If you are just outside the city, we very likely still serve you — just ask.

Need as-built plans in San Mateo?

Local crews, fast scheduling, and fixed pricing across San Mateo County. Get your quote today.

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