Everything Your City Requires
From full permit plan sets to individual engineering stamps — we provide exactly what your AHJ needs to approve your solar project.
Custom Solar System Design
Precision system layouts using Google Earth satellite roof analysis — panel placement, shading analysis, and production modeling.
Structural Engineering Stamp
PE-stamped structural letter confirming your roof can support the proposed solar array — accepted by all California AHJs.
Electrical Engineering Stamp
PE-stamped electrical diagrams and single-line drawings required for permit submittal in California cities and counties.
Service Panel Upgrade Planning
Complete plans for main panel upgrades (MPU) when additional capacity is needed for solar or EV charging.
EV Charger Design & Integration
Load calculations and wiring plans for Level 2 EV charger installation, fully coordinated with your solar design.
Battery Storage Planning
Interconnection and placement plans for Powerwall, Enphase, Franklin, and other battery backup systems.
From Request to Permit-Ready in Days
Submit Your Request
Tell us your address and what services you need. We'll follow up within 1 business day.
We Design Your System
Our engineers analyze your roof via satellite, size the system, and create permit-ready drawings.
Engineering Stamps Applied
A California-licensed PE reviews and stamps the structural and/or electrical documents.
Submit to Your City
You receive a complete, city-ready PDF plan set ready to drop off or upload to your permitting portal.
A Complete, City-Ready Plan Set
Every document your city's plan checker needs — organized, stamped, and delivered as a ready-to-submit PDF package.
Why Plan Sets Get Rejected
The Engineering Team California Installers Trust
Licensed Engineers
All stamps are issued by California-licensed Professional Engineers (PE) — accepted by every AHJ in the state.
First-Pass Approval Rate
Our plan sets are built to pass. We know what California plan checkers look for and we include it every time.
Fast Turnaround
Standard plan sets delivered in 3–5 business days. Rush turnaround available for time-sensitive permits.
Installer-Friendly
We work directly with solar installers and homeowners. Plans are formatted for easy permit submittal.
Plans That Pass. Customers Who Come Back.
"My installer needed stamped plans fast and the city kept rejecting other plan sets. These guys delivered in 3 days and we passed first try. Worth every penny."
"I needed both a structural and electrical stamp before my city would accept my permit. Clean, professional plan set — the building department was happy."
"Added a battery and EV charger to an existing solar system. They updated our plans, handled the panel upgrade design, and we got permitted without a hitch."
Plan Set FAQs
Why do I need stamped plans?
Most California cities require a PE-stamped structural letter and/or electrical drawings before they will issue a solar permit. Without them, your permit application will be rejected or placed on hold.
What information do you need from me?
Just your property address and the proposed system size (or your installer's proposal). We handle the satellite analysis, shading review, and all engineering from there.
How long does it take?
Standard turnaround is 3–5 business days after we receive your project information. Rush service (1–2 business days) is available — ask when you submit.
Will these plans be accepted by my city?
Yes. Our plans are designed to meet California Building Code (CBC) and NEC requirements and are accepted by all California AHJs. If a plan checker has a revision request, we handle it at no additional charge.
Can you work with my installer?
Absolutely. We regularly coordinate with solar installers throughout California. Your installer can submit our plans directly to the city along with their permit application.
We Serve All of California
Remote engineering services available statewide — no site visit required