01
Foundation Layout
Included when required by the project scope and reviewing authority.
FOUNDATION PLANS
Foundation Plans for California Projects
Foundation plans and structural engineering coordination for applicable California additions, new construction, accessory structures, repairs, and retrofit projects.
SitePlan California prepares and coordinates permit-focused drawings for projects throughout California. The exact deliverables are defined around the property, proposed work, available source information, and reviewing authority requirements.
Project-specific drawing scopeBuilt around the property, proposed work, and reviewing requirements.
Project-Specific ScopeThe drawing package is defined around the actual permit project rather than a generic template.
Permit-Focused DrawingsPlans are organized for clear building-department review and construction coordination.
California CoverageRemote permit drawing support for applicable projects throughout California.
Professional CoordinationLicensed professional review is coordinated when the project requires regulated design responsibility.
Service Overview
Clear Drawings Built Around the Actual Permit Scope
Foundation drawings explain how the structure transfers loads into the supporting soil through slabs, footings, stem walls, piers, or other systems. The exact foundation design depends on the building, site conditions, and responsible engineer.
We begin with the property address, current plans or available records, a description of the proposed work, and any written plan-check comments. From there, we identify the drawings and professional disciplines that belong in the permit package.
For broader multi-discipline projects, our Full Permit Drawing Sets service can coordinate site, architectural, structural, and MEP information into one package.
Foundation plans should match the structural system above them and reflect the engineer’s assumptions about loads, footing geometry, slab conditions, and connections.
Related services include Structural Engineering Plans, Structural Calculations, Full ADU Permit Sets, and Residential Permit Plans.
Project-Specific ScopeThe drawing package is defined around the actual permit project rather than a generic template.
Permit-Focused DrawingsPlans are organized for clear building-department review and construction coordination.
California CoverageRemote permit drawing support for applicable projects throughout California.
Professional CoordinationLicensed professional review is coordinated when the project requires regulated design responsibility.
Common Project Types
Common Projects We Support
The exact requirements vary by project, but these are common situations where foundation plans may be needed.
Home Additions
Permit drawing and coordination support for Home Additions based on the actual project scope.
ADU Foundations
Permit drawing and coordination support for ADU Foundations based on the actual project scope.
Garage Foundations
Permit drawing and coordination support for Garage Foundations based on the actual project scope.
How It Works
From Project Information to a Permit-Ready Drawing Package
Send the information you have, confirm the scope, review the draft, and receive the completed digital drawing package.
STEP 01
Send Project Information
Share the property address, project description, existing plans, survey, sketches, photos, or permit comments you already have.
STEP 02
Scope Review
We review the information and confirm the likely drawing scope, expected deliverables, and any professional coordination needed.
STEP 03
Drafting & Coordination
The foundation plans package is prepared around the existing conditions, proposed work, and agreed project scope.
STEP 04
Digital Delivery
Receive the completed files digitally, with applicable revision support based on the confirmed project scope.
Start With What You Have
Start With the Project Information You Already Have
You do not need to know every required sheet before contacting us. Send the property address, project description, existing plans, survey if available, sketches, photos, consultant documents, or permit comments you already have.
We will use that information to define the likely drawing scope, identify information gaps, and determine whether another professional discipline needs to be involved.
For this service, useful supporting pages include Structural Engineering Plans, Structural Calculations, Full ADU Permit Sets.
01Property address
02Existing plans, if available
03Survey or site information, if available
04Photos or sketches of existing conditions
05Project description or contractor notes
06Permit comments, if applicable
What We Prepare
Typical Foundation Plans Deliverables
The exact deliverables depend on the project and reviewing authority. We confirm the expected drawing package before production begins.
02
Footing Details
Included when required by the project scope and reviewing authority.
03
Slab Details
Included when required by the project scope and reviewing authority.
04
Stem Wall Details
Included when required by the project scope and reviewing authority.
05
Connection Information
Included when required by the project scope and reviewing authority.
06
Engineer-Sealed Foundation Sheets Where Required
Included when required by the project scope and reviewing authority.
Coordinated Permit Package
The Drawings Should Tell One Consistent Project Story
Permit drawings work best when dimensions, proposed work, existing conditions, and professional notes agree across the set. We coordinate the relevant information before the package is finalized so reviewers are not comparing conflicting versions of the project.
Where engineering, surveying, architecture, or another regulated discipline is required, the appropriate licensed professional remains responsible for that technical work.
Drafting Support With the Right Professional Scope
Some foundation plans projects are straightforward drafting assignments, while others involve licensed engineering or another regulated professional service. We identify that distinction during scope review rather than implying that every sheet receives a stamp or professional seal.
Deliverables & Professional Scope
What to Expect From Foundation Plans
Deliverables are based on the agreed project scope and may include the drawing types listed above, permit notes, revision sheets, supporting details, or professional documents when applicable.
Some projects require work prepared, reviewed, signed, or sealed by a licensed architect, engineer, land surveyor, or other regulated professional. Those requirements are identified during scope review and coordinated appropriately. Permit approval remains the decision of the reviewing authority.
Related Services
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Frequently Asked Questions
Common Questions About Foundation Plans
Common questions about scope, source information, professional coordination, revisions, and delivery.
What is included in Foundation Plans?
The exact foundation plans package depends on project scope and the reviewing authority. We confirm expected deliverables before production begins.
Does every project need the same drawings?
No. Required sheets vary by project type, existing conditions, proposed work, and local review requirements.
Can you work from existing plans or a survey?
Yes. Existing drawings, surveys, CAD files, PDFs, sketches, photos, and other project records can be reviewed as source information when suitable.
Can you help with permit corrections?
Yes. Send the current plan set and complete written correction comments so we can identify which drawings and disciplines are affected.
Can licensed professional review be coordinated?
Yes. When licensed architecture, engineering, surveying, or another regulated professional service is required, that work can be coordinated appropriately.
Do you support residential and commercial projects?
We support applicable residential and commercial projects where this service fits the project scope and available professional resources.
What information should I send first?
Start with the property address, a short project description, and any existing plans, survey, sketches, photos, contractor notes, or permit comments you already have.
Can you coordinate drawings with other disciplines?
Yes. The package can be coordinated with site, architectural, structural, civil, electrical, plumbing, mechanical, and other applicable project information.
What file formats will I receive?
PDF is standard. CAD/DWG or other source files can also be included when specified in the project agreement.
Do you provide Foundation Plans throughout California?
Yes. We support applicable foundation plans projects throughout California, subject to project scope, available information, professional requirements, and local jurisdiction rules.
Ready to Start?
Request a Quote for Foundation Plans
Send the property address, project description, and any plans, survey, sketches, photos, or permit comments you already have. We will review the information, define the likely drawing scope, and explain the appropriate next step.
You do not need to know the exact sheet list before contacting us.
You may also want to review Structural Engineering Plans, Structural Calculations, Full ADU Permit Sets depending on the project.
START YOUR PROJECT
Request Your Free Project Review
Share the property address and project details. We will review the information and follow up with the next step, scope, and pricing.
- California residential and commercial permit plans
- Engineering coordination when required
- Secure online enquiry and document upload