A Simplified Guide for Obtaining a Building Permit
Building an Accessory Dwelling Unit (ADU) in California is a smart way to increase property values, generate rental income, or increase living space. However, the process of obtaining permission can be tedious. So, how long does it take to get building permits? On average, it takes from 8 to 15 months, depending on local regulations, the complexity of the project and the timing of approval in the city.
Step 1: Research and Initial Planning (1-2 Months)
Start by learning about local regulations and preparing your property for an ADU.
Review the zoning laws: Specify size restrictions, obstacles, and other requirements in your city planning department.
Visit your site: assess the area, access to utility networks, and possible problems.
Make a preliminary design: Consult with an ADU specialist or architect to explore possible ideas.
Pro Tip: California cities have different rules for working with ADU. Do your research in advance to avoid costly delays.
Step 2: Design & Plan Development (2-3 Months)
Once your property qualifies, create detailed plans that meet local codes.
Hire a professional: An architect or ADU designer can create blueprints and 3D renderings.
Prepare the documents: Specify the location of the object, floor plans, height differences and structural details.
Pre-application review: Some cities offer a pre-project review to identify problems before submitting the form.
Pro Tip: High-quality project plans reduce the number of changes and speed up approval.
Step 3: Submit Permit Applications (1-2 Months)
With finalized plans, submit your permit applications to the local building department.
Building permit: Covers structural and safety aspects of your ADU.
Additional permits: May include plumbing, electrical, mechanical, or grading permits.
Pay fees: Permit costs range from 2,000 to 10,000, though some cities offer ADU fee waivers.
Pro Tip: Submit a complete, well-organized application to avoid delays.
Step 4: Permit Review & Approval (3-6 Months)
Your application will undergo a review process, which can take several months.
Initial review: The city checks for code compliance.
Revisions: If changes are needed, revise plans and resubmit.
Final approval: Once approved, you’re ready to build!
Pro Tip: Regular follow-ups with the city can help move your application along.
Step 5: Pre-Construction Preparations (1-2 Months)
With permits in hand, prepare for construction.
Hire a contractor: Choose a licensed contractor with ADU experience.
Schedule meetings: Align with your team on timelines and expectations.
Prepare the site: Clear obstacles and arrange utility connections.
Pro Tip: A smooth pre-construction phase prevents delays during building.
Final Thoughts
While the ADU permitting process can be lengthy, proper planning and professional guidance can make it smoother. At EG Modern Construction, we specialize in handling California’s ADU permit process, from design to approval. Let us help you bring your ADU vision to life!