Pasar al contenido principal

How to apply for a building permit

Understand which permit process applies to you. We have 2 processes depending on what you need.

NOTICE:  PERMIT SCAMS ARE INCREASING — WHEN IN DOUBT, CALL IT OUT!
The County of Marin will only request payment through ProjectDox notifications, County website application prompts, Permit Fee Payment forms, or personal check by mail/drop-off. 
We will NEVER request payment via wire transfer, Zelle, Venmo, PayPal, or other payment apps. 
When in doubt, contact our office to verify before sending payment.

Quick online permits

Residential maintenance and minor improvements? You don't need to submit plans to get a permit. Apply online and get your permit as quickly as you can complete the application.

 

Maintenance permit online

These online permits are for jobs that replace something that exists now. You do not need to have plans to describe your work. We will not ask for plans. 

Types 

Electrical – circuits, outlets, service upgrade, EV charging station, etc. 

Plumbing – gas service/piping, bath/kitchen plumbing fixtures, water heater 

Mechanical – ductwork, mechanical appliance, HVAC, exhaust hood 

Building – siding, stucco, re-roof, same size/location window/door replacement 

 

Minor improvement permit online

We review your plans at the job site. You receive your permit online up front. You don’t have to send your plans to us.  

Types 

Residential rooftop photovoltaic installations 

Energy storage systems 

Backup generator installations 

Non-structural kitchen and bathroom remodel (not > 400 sq ft)

Big jobs need plans up front

For larger projects you need to provide your plans to us before you start.   

  • New buildings, additions, alterations, remodels, conversions
  • ADU’s (Accessory Dwelling Units), JADU’s (Junior Accessory Dwelling Units)
  • Decks, trellis, accessory structures
  • Pools, spa, hot tub 

You need to submit your plans before we issue a permit. This option takes 6 – 8 weeks because it involves more collaboration. Sending plans on paper can slow the process down.  

How to get your permit

All building permits start at the same place. Need a fast online permit for a simple project? A bigger project needing upfront plan review? This is the online application for both. 

Related

Page last updated on Mayo 20, 2026.