Our services

Our ADU Construction Service

Accessory Dwelling Units (ADUs) have become an increasingly popular solution for homeowners looking to add value, functionality, and space to their properties. Whether you’re seeking a rental income opportunity, a private guest suite, or a cozy space for family members, Shermans Builders Inc. specializes in designing and building high-quality ADUs that seamlessly integrate with your property and lifestyle.

150+

Projects Completed

Why Choose Shermans Builders Inc. for Your ADU Construction?

✅ Licensed & Experienced ADU Builders – We have years of experience building ADUs in San Diego

✅ We Handle Permits & Regulations – We manage all city approvals and zoning requirements.

✅ Custom Design Solutions – Every ADU is tailored to your property and goals.

✅ High-Quality Craftsmanship – Built to last with premium materials and attention to detail.

Our ADU Building Process

Consultation & Feasibility

We start with a detailed consultation to understand your goals, property, and budget. During this phase, we evaluate your lot to determine what type of ADU is possible based on San Diego zoning laws, property size, and utility access.

Our team will discuss options such as detached ADUs, garage conversions, or attached units, helping you choose the best solution for your needs. We also provide a preliminary cost estimate so you have a clear understanding of your investment from the beginning.

👉 This step ensures your ADU project is feasible, compliant, and aligned with your vision.

Design & Planning

Once your project is approved, we move into the design phase. Our experts create a custom ADU layout that maximizes space, functionality, and style while meeting all San Diego building requirements.

We help you select:

  • Floor plans and layouts
  • Materials and finishes
  • Energy-efficient features
  • Modern design elements

Our goal is to design an ADU that not only looks great but also increases your property value and long-term usability.

Permits & Approvals

Navigating permits in San Diego can be complex—but we handle everything for you. Our team manages the entire approval process, ensuring your ADU complies with all local regulations, zoning laws, and building codes.

We take care of:

  • Permit applications
  • City submissions
  • Plan approvals
  • Code compliance

This step removes the stress and ensures your project moves forward without delays. usability.

ADU Construction

Once permits are approved, construction begins. Our experienced builders handle every aspect of the ADU construction process with precision and professionalism.

This includes:

  • Site preparation and foundation
  • Framing and structural work
  • Plumbing, electrical, and HVAC
  • Interior and exterior finishes

We maintain clear communication throughout the project and keep timelines on track, ensuring high-quality results that meet your expectations.

Final Inspection & Completion

After construction is complete, we conduct a final walkthrough and coordinate all required inspections to ensure your ADU meets San Diego building standards.

We make sure:

  • Everything is built to code
  • All systems function properly
  • The final details meet our quality standards

Once approved, your ADU is ready for use—whether as a rental unit, guest house, or additional living space.

Benefits of

Adding an ADU

Building an ADU with Shermans Builders Inc. offers several advantages:

Benefits of Kitchen Remodeling
Increased Property Value

An ADU enhances the overall value of your home.

Rental
Income

Create a reliable source of income by renting the space.

Multi-Generational Living

Provide a comfortable space for family members without sacrificing privacy.

ADU Construction
Flexible
Use

Use it as a home office, guest suite, or personal retreat.

FAQ
ADUs in San Diego

The timeline for building an ADU in San Diego typically ranges from 4 to 9 months, depending on the size, design, and complexity of the project. This includes the design phase, permitting process, and construction.

Detached ADUs usually take longer than garage conversions because they require full construction from the ground up. Delays can also occur based on city approvals and site conditions, but working with experienced ADU builders in San Diego helps keep the process efficient and on schedule.

Yes, permits are required for all ADU construction projects in San Diego. This includes approvals for zoning, building, electrical, plumbing, and structural work.

At Sherman’s Builders, we handle the entire permitting process for you—from preparing plans to submitting documents and coordinating with the city. This ensures your ADU project complies with all San Diego regulations and avoids costly delays or issues.

Yes, ADUs in San Diego are commonly used as rental units and can generate significant monthly income. Many homeowners build ADUs specifically for long-term rentals, guest housing, or multigenerational living.

However, rental regulations may vary depending on local laws, so it’s important to ensure compliance with current San Diego guidelines. We can help guide you through the process so your ADU is built with rental use in mind.

The maximum size of an ADU in San Diego depends on your property, zoning regulations, and whether the unit is attached or detached.

In general:

  • Detached ADUs can often be built up to 800–1,200 square feet or more
  • Junior ADUs (JADUs) are typically limited to 500 square feet

Our team evaluates your property and provides clear guidance on the maximum allowable size based on current San Diego ADU regulations.

Yes, building an ADU in San Diego is considered one of the best real estate investments. It can significantly increase your property value while also providing a steady source of rental income.

With high housing demand in San Diego, ADUs offer excellent long-term returns. Whether used for family, guests, or tenants, an ADU adds flexibility and financial value to your property.

The cost of building an ADU in San Diego varies based on size, design, and site conditions.

Typical price ranges include:

  • Garage conversions: $80,000 – $150,000
  • Attached ADUs: $120,000 – $250,000
  • Detached ADUs: $150,000 – $400,000+

We provide detailed, transparent estimates so you understand all costs upfront with no surprises.

Getting started is simple. Schedule a free consultation with Sherman’s Builders, and we’ll evaluate your property, discuss your goals, and recommend the best ADU solution for your needs.

From design and permits to construction and final inspection, we handle every step of the ADU building process in San Diego.

👉 Contact us today to get your free ADU estimate

Best solutions

Let’s work on your project together

Start Your ADU Project Today!

Shermans Builders Inc. is your trusted partner for ADU construction. Whether you’re adding a detached unit, converting existing space, or building an attached ADU, we’re here to help. Contact us today to schedule a consultation and take the first step toward expanding your property with a high-quality, beautifully designed ADU.

Start Your ADU Project Today