Design, Permits & Pre-Construction
We handle the most complex part of the ADU journey - design, engineering, permits, and pre-construction preparation. Our team manages every detail so you do not have to.
What you get with design & permits services
Every aspect of this service is designed to make the process clear, efficient, and tailored to your property.
Custom architectural design
Our architects create plans tailored to your property, preferences, and budget - not generic cookie-cutter layouts.
Full permit management
We submit, track, and manage all permit applications and city reviews so you never have to visit a building department.
Engineering and structural plans
Licensed engineers prepare structural, mechanical, and electrical plans required for permit approval.
Title 24 energy compliance
We ensure your ADU design meets California energy efficiency requirements from the start.
HOA and neighborhood review
If applicable, we coordinate with HOA boards and address any neighborhood concerns proactively.
Pre-construction coordination
We line up contractors, schedule utility connections, and prepare the site before construction begins.
What is included
Here is exactly what you receive as part of this service package.
Architectural floor plans
Detailed floor plans, elevations, and site plans prepared by our licensed architects.
Engineering documents
Structural, mechanical, and electrical engineering plans required for permit submission.
Permit application package
A complete set of documents formatted and submitted to your local building department.
Energy compliance report
Title 24 energy calculations and documentation demonstrating code compliance.
Material specifications
A detailed spec sheet covering all planned materials, finishes, and fixtures.
Construction-ready drawings
Final reviewed plans ready to hand off to the construction team.
How it works
Our design & permits process is straightforward and designed to keep you informed at every stage.
Design kickoff meeting
We review your vision, finalize design preferences, and establish the design timeline.
Plans and engineering
Our architects and engineers develop complete construction documents for your ADU.
Permit submission
We submit your permit application and manage all communication with the building department.
Pre-construction prep
Once approved, we coordinate contractor scheduling, material ordering, and site preparation.
Why work with Infinity Construction & Design
In-house design team
Licensed architects and engineers on staff - no outsourcing delays.
95% first-pass permit approval
Our experience with local building departments means fewer revisions and faster approvals.
Code-compliant guaranteed
Every plan we produce meets current building codes and energy standards.
Seamless handoff to construction
Our integrated team ensures nothing gets lost between design and build phases.
What our homeowners say
"Infinity Construction made building our ADU completely stress-free. They kept us informed at every step."
Sarah Mitchell
Homeowner, Pasadena
Common questions
The initial consultation and feasibility study typically takes 1-2 weeks. If you proceed to design and permits, that phase takes an additional 2-3 months depending on your city's review timeline.