Fully Online CA HVAC Permitting Service - Drawings, T24, AHRI, City Submission & Plan Check Done For You

• No site visits needed - upload project details online anywhere in California

• Permit drawings, Title 24, AHRI documentation & city submittal included

• Plan check responses and city coordination handled for you by Licensed P.E.

• Installing new HVAC? We can handle permitting from start to finish

• No site visits needed - upload project details online

• 48-hour turnaround for drawings, Title 24, & more

• Weekly follow-ups with city & plan check support by P.E.

The fastest, easiest way to get HVAC permits in CA

Submit a project and get a fast quote

You handle the install, a CA-licensed HVAC engineer handles the permitting

Many California homeowners are perfectly capable of managing their HVAC project but get stuck when they reach the permitting stage. Permit drawings, Title 24 forms, AHRI certificates, city portals, correction notices, and plan check comments can quickly become overwhelming. Seasonal handles the paperwork, documentation, and permit coordination so you can keep your project moving.
Perfect for:
Mini-Split Installations
Heat Pump Upgrades
HVAC Equipment Replacements
Ductwork Modifications & Equipment Replacements
Most Residential HVAC/Mechanical Project Types

How we help homeowners

Curious to know more about Seasonal, what it's like to work with us, and whether we're the right choice for your current/upcoming project? Select each of the dropdown option below to get insight into different areas of our business.
What We Handle For You

Permit Drawings

Should your project require it, we offer complete permit drawing packages drawn by a CA Mechanical Designer, following local guidelines and giving clear details to plan checkers, minimizing permit issuance delays.

Always drawn by Licensed P.E.
Clear and informative style
No excessive costly details - just what your city requires

Title 24 Documentation

We also generate and provide the appropriate Title 24 documentation for your project, ensuring that your entire permitting process is consolidated and pain-free.

We determine which forms are needed for your project
We fill them out correctly for you
T24 Forms submitted to your city on your behalf

AHRI Certs & Cutsheets

With some basic project info, we will also procure all the other supplemental documentation that will ensure your project gets permitted as fast as possible, including AHRI certificates and equipment information.

Certificates for your exact equipment combination
Cutsheets direct from your equipment manufacturers
Attached along with drawing set

Plan Check Responses

One thing that truly differentiates Seasonal is that we can handle the entire permitting process for you, taking full accountability for any plan check corrections from the city and responding promptly and professionally.

Responses by Licensed P.E.
24-48 hour response time
We ensure your project gets a permit as fast as possible
Our Easy & Efficient Project Intake Process

A Fast & Fully Online Process

Getting an HVAC permit shouldn't require hours of research, confusing forms, and back-and-forth with your city. Seasonal simplifies the entire process by handling the permit drawings, Title 24 documentation, AHRI certificates, city submittal, and plan check responses for you. Simply take 10 minutes to provide your project information online and we'll take care of the permitting side, helping you move from project idea to permit approval as smoothly as possible.

What We Need From You

• Project Address
• Approx. Conditioned Floor Area & Year Built
• Scope of Work (2-3 Sentences)
• New Equipment Model Numbers & Quantity
• Existing Equipment Model Numbers & Quantity
• Basic Hand-Drawn Sketch of New Equipment Locations
• Electrical Panel Photograph & Location

Why Homeowners Choose To Work With Seasonal

Avoid Paying For Full-Service Installation Just To Get Permit Support

Many homeowners discover that the permitting process is the only thing standing between them and being able to self-install their home project. Permit drawings, Title 24 documentation, AHRI certificates, city portals, and plan check comments can quickly become overwhelming, even when the scope of work itself is straightforward. Seasonal helps bridge that gap by handling the permitting side of the project for you. Instead of hiring a full-service contractor solely to navigate the paperwork, many homeowners are able to move forward with confidence (while saving significant sums of money) while we take care of the documentation, submittals, and agency coordination.

One Point of Contact

Permitting often requires coordination between multiple systems, forms, agencies, and documentation sources. Drawings, Title 24 requirements, AHRI certificates, permit applications, and plan check comments can all come from different places, creating unnecessary confusion and delays. With Seasonal, everything is handled under one roof. We act as your single point of contact throughout the process, helping keep the project organized and ensuring that all required documentation is prepared, submitted, and tracked through review.

Support Anywhere in California

Our fully online process allows us to support residential HVAC projects throughout California without requiring site visits or in-person meetings. Whether your project is in a major city, a smaller county jurisdiction, or a rural community, we can often assist remotely using project information, photos, equipment details, and simple sketches. From mini-split installations and heat pump upgrades to HVAC replacements and other residential mechanical projects, Seasonal is built to provide fast, convenient permitting support wherever your project is located.

What We Charge Per Project

While our exact prices may vary slightly because every project is different, this basic pricing guide provides you with a first estimate of what you'll pay for each type of project. Please submit your project or contact us for exact pricing. We're looking forward to working with you and bringing you the value you deserve!

Full-Scope Permitting - Pricing Guide By Project Type

Mini-Split Installation - Permit Set, Submit to City, T24, AHRI, Plan Check Responses
Starting at $349
Heat Pump Installation - Permit Set, Submit to City, T24, AHRI, Plan Check Responses
Starting at $499
HVAC Equipment Replacement (No Duct Modifications) - Permit Set, Submit to City, T24, AHRI, Plan Check Responses
Starting at $499
New HVAC Equipment Install (With Duct Modifications / Additions)  - Permit Set, Submit to City, T24, AHRI, Plan Check Responses
Starting at $799
Other HVAC Projects - Permit Set, Submit to City, T24, AHRI, Plan Check Responses
Contact for Price

Submit a Project For Quote

Want a fast quote on getting your project permitted? Fill out the form below with the details of your project and we'll be in touch within 24 hours with a comprehensive price for our services.

Veteran & Senior Discounts Available
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