Plan & permit estimates

Start with a preliminary range for your project. These planning fees cover residential drawings, with optional permit coordination shown separately. We’ll confirm the scope and property details before preparing a written estimate.

ADU plans Room additions Garage conversions

01 · ADU

ADU plans

Planning drawings for attached or detached accessory dwelling units.

Up to 500 sq. ft.$3,500–$5,500

501–800 sq. ft.$5,500–$8,000

Planning a larger ADU? Request a custom estimate.

02 · ADDITIONS

Room additions

Blueprints for new living space connected to your home.

Up to 300 sq. ft.$2,500–$4,000

301–600 sq. ft.$4,000–$6,500

Planning a larger addition? Request a custom estimate.

03 · CONVERSIONS

Garage conversions

Choose the scope that best matches the planned conversion.

Living-space conversion$2,500–$4,000

ADU with kitchen and bath$4,000–$6,500

Optional service

Permit coordination

$500–$1,000

Available with any project type. We’ll confirm what’s included for your city and scope before preparing a written quote.

A clear starting point

What these ranges cover

These are preliminary service-fee ranges for Cristobal Construction’s drawing and plan services. They are not a construction budget or a final quote. City plan-check and permit charges are separate. Structural engineering, Title 24, surveys, utility work, and other third-party reports are also separate when required.

Next step

Let’s talk through your project.

Every property is different. Tell us what you’re planning and we’ll review the scope with you.

Request a quote Call (805) 312-5062

Estimates are planning ranges only. Final pricing depends on project scope, property conditions, and local requirements.