Accessory Dwelling Units (ADUs), also called granny flats, backyard homes, or in-law suites, are becoming increasingly popular across California — and Half Moon Bay is no exception. With the city’s scenic coastal charm and rising housing demand, many homeowners are turning to ADU Contractor Half Moon Bay to add flexible, functional, and beautiful living spaces to their properties.

An experienced ADU contractor ensures your project meets state and local regulations, stays within budget, and blends seamlessly with your existing home — all while maximising property value and comfort.

What Is an ADU and Why Build One?

An Accessory Dwelling Unit (ADU) is a self-contained residential structure built on the same lot as your primary home. ADUs can serve multiple purposes — from a rental income source to a guest suite or workspace.

Homeowners in Half Moon Bay choose ADUs for:

• Rental Income: Earn steady passive income through long-term tenants.
• Family Housing: Provide independent space for relatives or ageing parents.
• Work-from-Home Studios: Create a private office or creative workspace.
• Property Value: Increase your home’s resale appeal with a functional addition.
• Sustainable Living: Smaller footprints and efficient energy use make ADUs eco-friendly.

With professional design and construction, an ADU becomes a stylish and practical extension of your property.

Types of ADUs You Can Build in Half Moon Bay

When working with an expert ADU contractor in Half Moon Bay, you can choose from several types of ADUs based on your lot, needs, and budget:

1. Detached ADU:
   A separate unit built in your backyard, ideal for privacy or rental opportunities.
2. Attached ADU:
   Built as an extension of your main home — perfect for shared family use.
3. Garage Conversion ADU:
   Converts an existing garage into a living space with cost savings and efficiency.
4. Basement or Attic ADU:
   Transforms underused space into a comfortable, fully equipped unit.
5. Junior ADU (JADU):
   Smaller units within your main home (up to 500 sq. ft.) for flexible living solutions.

Each type has unique benefits and design possibilities, and a skilled ADU contractor will help you identify the right option for your property.

What Does an ADU Contractor Do?

A professional ADU contractor in Half Moon Bay manages every phase of your project — from concept to completion.

Here’s what they handle:

• Initial Consultation: Assessing your property’s potential and zoning limits.
• Design & Planning: Creating detailed architectural layouts that match your goals.
• Permitting: Handling all local building permits and city approvals.
• Construction: Overseeing every step — foundation, framing, electrical, plumbing, and finishes.
• Final Inspection: Ensuring your ADU meets all safety and compliance standards.

This end-to-end service ensures a smooth, stress-free experience for homeowners.

Benefits of Hiring a Local ADU Contractor in Half Moon Bay

Local experience matters when it comes to building ADUs. Here’s why choosing a Half Moon Bay-based contractor makes a difference:

• Knowledge of Local Building Codes: Expertise in Half Moon Bay zoning, coastal regulations, and permit processes.
• Faster Approvals: Experience with local authorities streamlines the permit timeline.
• Access to Local Suppliers: Partnerships with nearby vendors for quality materials at better prices.
• Community Reputation: Established contractors rely on client satisfaction and referrals.

With a trusted local contractor, you’ll get efficiency, accountability, and top-tier craftsmanship.

How Much Does an ADU Cost in Half Moon Bay?

The cost of building an ADU varies based on size, materials, and design complexity. Here’s a general estimate:

• Garage Conversion ADUs: $120,000 – $180,000
• Attached ADUs: $180,000 – $250,000
• Detached ADUs: $220,000 – $350,000

While costs may seem significant, an ADU adds long-term financial value through increased property worth and potential rental income.

The ADU Construction Process

Building an ADU involves multiple stages, each essential to achieving high-quality results:

1. Consultation & Site Evaluation – Assess property potential and project goals.
2. Custom Design Creation – Tailored floor plans that meet functionality and aesthetics.
3. Permit Application – ADU contractors manage all city documentation and compliance.
4. Construction Phase – Skilled crews handle framing, plumbing, electrical, and finishes.
5. Final Inspection & Completion – Your contractor ensures your ADU meets all legal and safety standards.

This structured process ensures efficiency, transparency, and lasting results.

FAQs About ADU Contractors in Half Moon Bay

Q1: Do I need a permit to build an ADU in Half Moon Bay?
Yes. All ADUs require city permits. Your contractor will manage this process for you.

Q2: How long does it take to complete an ADU project?
On average, ADUs take between 6–10 months from design to completion, depending on project complexity.

Q3: Can I rent out my ADU legally?
Yes. Half Moon Bay allows ADUs to be rented out as long as they meet local regulations.

Q4: What’s the difference between an ADU and a Junior ADU (JADU)?
A JADU is smaller (up to 500 sq. ft.) and typically located within your main home, while an ADU can be detached or attached.

Partnering with an experienced ADU contractor in Half Moon Bay ensures your project is built with precision, creativity, and compliance. From the first design draft to the final inspection, professional contractors bring your vision to life while maximising value and functionality.

Whether you want to build a rental unit, guest suite, or modern workspace, an ADU is a practical and profitable addition to your property. With expert guidance, transparent pricing, and quality craftsmanship, your dream ADU is within reach — right here in beautiful Half Moon Bay.