#1 General Contractor in Northern California

Dunnigan ADU Builders

Serviced ZIP codes: 95937
Awards Logos Best ADU Builder 2023 in California
Awards Logos №1 Constraction Company in Sacramento
Awards Logos №1 Constraction Company in Sacramento
Awards Logos №1 Constraction Company in Sacramento
Awards Logos #25 in California’s Top list of the fastest private growing companies #25 in California’s Top list of the fastest private growing companies
#1 General Contractor in California

Dunnigan ADU Builders

Serviced ZIP codes: 95937
Total Rating
Total Rating
Based on 826 reviews
Google Rating
Google Rating
Based on 179 reviews
Facebook Rating
Facebook Rating
Based on 143 reviews
Yelp Rating
Yelp Rating
Based on 81 reviews

Dunnigan ADU Design & Build

We take care of everything from plans and permits to construction, simplifying ADU development and guaranteeing your peace of mind.

Studio ADU

The 400 sq ft studio ADU offers an efficient open layout, seamlessly combining living, sleeping, and dining spaces. With a full bathroom and energy-efficient design, it's ideal for a minimalist lifestyle or an excellent rental opportunity.

1-Bedroom ADU

The 520 sq ft 1-bedroom ADU provides versatile living solutions. Ideal for long-term rentals, it offers a self-contained space for tenants or serves as a comfortable in-law suite, ensuring independence for extended family.

2-Bedroom ADU

The 570 sq ft ADU maximizes functionality with a full-size kitchen, two bathrooms, and two bedrooms, perfect for small families. Its thoughtful design optimizes every square foot for comfortable
living and privacy.

Custom ADU

Tailor your living experience with our fully custom ADU option. Dictate the layout, size, and features to meet your unique needs, whether it's adapting to a growing family, crafting the perfect home office or building a rental unit.

Cost Calculator

Turnkey Custom ADU

Package Details
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The calculations are approximate, based on A+ Construction Big Data Research 2023 Ⓒ
The calculations are approximate, based on A+ Construction Big Data Research 2023 Ⓒ

Our Latest ADU Projects

Our Process

A stress-free experience from start to finish

1. Consultation

Schedule a Virtual or an In-House Consultation with our Remodeling Consultants to discuss your project.

2. Estimate

Come in for an appointment to our Designer Showroom to go over the quote аnd pick out materials.

3. Contract

We sign a contract and get the ball rolling. You will meet with our Designer to finalize the designs.

4. Construction

We incorporate digital technologies into our construction processes to be more efficient.

Book Your Free Consultation Now

Get Financing
for Your ADU Project


Contact Solano Mortgage for a free consultation.

With 30+ years of experience, we ensure no negative impact on your FICO scores or data privacy. Solano Mortgage: your trusted lender, broker, and ally with California's largest credit unions.

Reach out to Our Experts
to Discuss Your Financing Options
Why Choose
A+ Construction & Remodeling?


We provide clear estimates that tell you exactly where your money is going.

Timeframe & Schedule

We provide an easy-to-follow schedule so you can see where your project is at and what is next, in real time.

License & Warranty

We are licensed, bonded and provide warranty on labor and materials because we believe it’s important for you to have a peace of mind.


We have a streamlined communication system that includes your own personal chat with your entire team ready to answer your questions at any time.

A+ Construction & Remodeling ADU Builders Proud to be recognized by

BBB A+ Rating
NKBA - The National Kitchen & Bath Association
NARI - National Association of the Remodeling Industry
Yellow Pages
EPA - United States Environmental Protection Agency
DR - Daily Republic News
The Sacramento Bee News
GoodDay Sacramento - CBS News
YEC - Young Entrepreneur Council
Renovate America
The Original Sacramento Home & Garden Show
Chamber of Commerce
GC Magazine
GuildQuality Member
Made In USA
ADU Calculator

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ADU Builders Dunnigan, CA

An ADU project is not an easy task to tackle all by yourself, even if friends and family are ready to assist you along the way. Getting the job completed by general contractors in Yolo county can save you a lot of time and money. Wonder how?

First of all, an ADU remodeling project requires some special skills. Otherwise, you might come across unexpected problems. You will be impressed by how much faster the construction crew will deal with the installation of an ADU. Thus, you can save your personal time and be done with the construction process a lot quicker.

What is more, failed attempts, unfortunately, also cost money. Just imagine all the wasted materials and repeating repairs that might come from even one misfortunate effort. To avoid all those struggles, it is better to contact the ADU builder or construction company for professional services.

Hiring specialists who focus on creating accessory dwelling units in California can be beneficial in the long term as well. With an ADU that has a proper design and has been built correctly, there are more chances of renting out the place or selling the property for a higher price in the future.

Want to know how to get more space without having to remodel your whole primary residence? Building an accessory dwelling unit is a fantastic solution for everyone who has been dreaming of getting an extension to their homes. And with professional help from A+ Construction & Remodeling team, you will be able to get quality results for reasonable prices!

ADU Contractor Dunnigan

By having the entire process of ADU building controlled by the A+ team, you get not only an excellent job output in the end, but also a pleasant experience of working with our employees throughout the planning and construction. With years of experience successfully working in the industry, we’ll get everything done in the best way possible.

If you decided to remodel with A+ Construction & Remodeling, you could be sure of efficient scheduling, timely project completion, and the highest quality of the final product. We don’t joke around when it comes to prices, so you also get a budget estimate during our first business meeting. And rest assured; there are no unexpected cost jumps: once the budget is approved, the job is done accordingly.

ADU Contractor Building Types

When it comes to the construction of accessory dwelling units, the first thing you need to think about is what type you want your ADU to be. Depending on your needs, preferences, and what size of a unit the property allows, the right kind should be chosen.

Here are the most common types of ADU projects in California:

  1. Detached ADU

A detached ADU is a new construction built separately from the main house. These units usually have bedrooms, kitchens, and bathrooms that are not shared with the primary structure. Although these ADUs are not connected with the primary residence, they cannot be sold separately, only rented to the tenants.

  1. Attached ADU

Attached accessory dwelling units usually share a common wall with a main home. Although it can be placed under the same roof, it still has a separate entrance that allows residents to access the ADU from the outside.

  1. Junior ADU

Installing junior ADUs is a reliable way of extending a particular zone in your house. It can be an addition to the kitchen zone, a brand-new bedroom, a master bathroom, and any other room in general. The main difference from the other types of ADUs is in the smaller size of the units.

  1. Garage Conversion ADU

Those property owners who have a garage that hasn’t been used for a while can easily turn it into an ADU. Garage conversions are quite popular remodeling projects, as they allow you to trade a not-so-functional space for something improved and useful.

The duration of constructing an ADU differs from one type to another. A property owner should choose a project type depending on the planned budget and future purposes of ADU use. If you are still not sure what kind of ADU will be the most suitable for your house in Dunnigan, CA, our experts at A+ are ready to give you some honest and helpful advice on the matter.


ADU Unit Construction Dunnigan

The construction of accessory dwelling units in Dunnigan, CA, might look differently for projects of various types. However, in general, the whole ADU project consists of several main steps.

Here are the services you get when you hire a general contractor in your city for the completion of an ADU project:

  1. Via phone calls or emails, A+ specialists set a date for your meeting;
  2. The discussions of the project plan begin, and all the steps are explained in detail;
  3. The estimate of the project’s budget is made;
  4. The designs and architectural plans are created by our in-house experts;
  5. Once the planning is completed, it is checked for compliance with customer’s preferences and legal requirements and sent to the local officials;
  6. When the property owner receives a building permit, the materials are delivered, and the construction works start;
  7. The general contractor regulates the new construction to finish everything on time;
  8. And lastly, you get a brand-new accessory dwelling unit on your property.

Benefits of ADU Building

Accessory dwelling units can be more beneficial than you think. They are not only places for an additional bedroom and a bathroom on your property, and there are many more advantages to these small housing units.

Take a look at some of the benefits that ADU projects bring to their owners in Yolo county:

  • Whether you have a single- or multifamily property, its value increases once you put up an ADU. This can give you a significant advantage in the housing market if you ever decide to sell your own home or move to another city.
  • ADU projects can be turned into anything, from your home office to a personal cinema or play area for the kids. This versatility allows you to create a perfect space for your friends and family to gather.
  • If there is no possibility of a guest bedroom in your house, why not build a whole guest house? It will provide more comfort and privacy to both you and your visitors.
  • An ADU can be rented to someone else, which gives you a source of extra income. Thus, your family can still look after the property and get some additional dollars for it.

And, of course, an ADU gives extra living space for those whose families that have grown bigger over the years. Whether you have your older relatives move in with you or your grown-up kids, need their private zones, a secondary unit is a perfect solution for this

Dunnigan ADU Construction Company

A+ Construction & Remodeling values the trust of our customers. That is why only quality ADUs are made by our industry experts. Thanks to numerous projects that were successfully completed in the past, A+ has gained a good name not only in Dunnigan but all over California as well.

When you are looking for contractors to hire, you surely pay attention to what previous customers talk about. You can read testimonials left by our clients from your city and from other areas to make sure that our words aren’t just pretty lies. A+ truly stands for what we believe a proper construction company should look like.

When working with our business, you can be sure of safety. We shop for all the materials, from tile to concrete, only at trusted and checked by time sources. Moreover, the majority of materials we use for the construction of your ADU are eco-friendly as well.

If you’ve been hesitating to contact A+ for an ADU in Yolo county to be built, this is your sign. We’ll provide you with a free budget estimate right on the first consultation in Dunnigan, which can be held both offline and online.

ADU Building Dunnigan

To create an ADU in Dunnigan, CA, you have to make sure your architectural plan complies with some legal regulations:

  • All the ADUs in California must be no smaller than 150 square feet and no bigger than 1,000 square feet;
  • The height of the unit cannot exceed 16 feet;
  • Each single-family property can have one ADU, while multifamily properties might have one ADU per every four houses;
  • An ADU should be at least 4 feet away from side and rear property lines;
  • If fire safety tools are installed in the main home, an ADU must include them as well.

Luckily, you don’t have to deal with learning all of the laws for your ADU plan. Our workers will check for every step of the ADU creation to comply with the state and local legal regulations.

Looking for More ADU Options?

Tiny Homes

TinY Homes

Experience tiny living with our innovative designs and unmatched quality

Prefab ADU

Prefab ADU

Streamlined elegance: Discover our cost-effective prefab ADU solutions

ADU Design Build

ADU Design Build

From concept to completion: Superior design, rapid construction, and cost-effective solutions

Backyard Cottage

Backyard Cottage

Seamless blend of rapid construction and superior design in your outdoor space.

Detached ADU

Detached ADU

Seamless integration of space and style with expertly crafted detached ADUs

Tiny House With Garage

Tiny House With Garage

Innovative solutions for compact living with convenient garage space

In-law Suite

In-law Suite

Superior in-law suites built with excellence and craftsmanship.

Garage Conversion

Garage Conversion

Redefining your space with innovative design, rapid execution and superior craftsmanship.

Custom Tiny Homes

Custom Tiny Homes

Your vision, our expertise: Creating custom tiny homes with superior quality

Tiny Office

Tiny Office

Elevate your productivity in custom tiny offices built with excellence and craftsmanship

ADU Estimator

ADU Estimator

Get an average price for an ADU in your area or talk to our expert to get a detailed quote.

Granny Flat

Granny Flat

Redefining independent living with top-notch design and innovative solutions.

A+ Construction & Remodeling Certifications

INC. 5000 Ranking

INC. 5000 Ranking

EPA Certification

EPA Certification

LIC #1007869 CSLB

LIC #1007869 CSLB

Accreditation with BBB

Accreditation with BBB

Member of NKBA

Member of NKBA

Member of NARI

Member of NARI

What Makes A+ Construction & Remodeling Unique


Our process is organized, streamlined and designed with you in mind.


We hold many awards and certifications in the industry.


In-house team means vendor savings passed on to you.


Professionally designed showroom with you in mind.


We provide detailed estimates showing you what you get for your money.


Furniture-grade quality products at affordable prices.


Our showroom carries the latest materials from trusted brands.


Our materials are eco-friendly and green certified.


We want you to be confident in your decision, no pressure sales.


Prefab ADU Construction

The A+ construction business can also create a prefab ADU for you. All of the pieces, including walls, windows, doors, and a roof, will be delivered right to your lot and assembled there. This ADU option is time- and cost-efficient, which makes it a perfect solution for everyone who isn’t ready to deal with full-on construction in their backyard. Once all the parts are installed where they belong, your ADU will be ready to use.

ADU Housing

A+ Construction & Remodeling provides some of the best ADU building services in California. If you are interested in working with our professional and experienced team, get in touch with our representatives now via a phone call, email, or an in-person visit.

All of your ADU dreams are destined to come true, and we are here to make sure it is done properly. A+ crew is looking forward to creating something outstanding just for you!

ADU Building Process Steps

Our comprehensive ADU construction process includes permit ready set of plans, interior design, submittal services, removal of debris. We are committed to using only the highest quality materials, ensuring the longevity and value of your ADU. With our ADU Building Services: From initial design consultations to the final touches, we’re with you every step of the way.

ADU Construction Process Steps

Step 1. Permit ready set of plans: Architectural plans and engineering calculations, ready for a permit application.
Step 2. Interior Design: Our expert team offers personalized design consultation to create a functional and stylish interior space.
Step 3. Permit Submittal Services: We handle the hassle of permit submissions on your behalf, ensuring compliance with local regulations.
Step 4. Removal of debris: Our efficient crew takes care of removing construction debris, maintaining a clean and safe work environment.

ADU Construction Includes

Please note that the contents of the package may vary depending on the specific terms outlined in the contract. While we strive to provide accurate and consistent packages, certain variations may occur based on the agreed-upon terms and conditions.
  • Concrete slab foundation: Enjoy a durable concrete slab foundation with proper grading and excavation for structural integrity.
  • Exterior covered porch: Create an inviting outdoor space for relaxation and entertainment.
  • Walls, partial vaulted/flat ceilings, 9′: Experience open and spacious living areas with customizable ceiling styles.
  • Gable style roof: Benefit from a classic and durable roof design that adds timeless appeal to your home.
  • Shingle type roof: Our high-quality shingles, along with gutters and downspouts, provide excellent protection and drainage.
  • Mini-split Dual zone: Achieve optimal comfort and energy efficiency with our dual-zone mini-split system.
  • Tank water heater: Enjoy a reliable water heater, conveniently housed in an outdoor galvanized water heater closet.
  • Electrical sub-panel: Ensure efficient power distribution with our electrical sub-panel, meeting all safety and code requirements.
  • Switches and outlets per code: We install switches and outlets throughout your home, adhering to electrical code standards.
  • Exterior entry doors 36×80: Enhance security and aesthetics with our high-quality exterior entry doors.
  • Standard-sized swing doors: Seamless transitions between rooms with stylish and functional doors.
  • Standard-sized interior closet doors: Maximize storage space with our efficient and visually appealing closet doors.
  • White vinyl windows: Enjoy energy-efficient windows that allow natural light to brighten your home while providing insulation.
  • Insulation per T24: Our construction includes energy-efficient insulation for optimal comfort and reduced energy loss.
  • Drywall & Orange peel or knockdown texture: Smooth and visually appealing finish with texture options.
  • Interior paint: Choose from a wide range of premium paint colors to personalize your interior space.
  • Painted exterior lap siding: Enhance curb appeal with professionally painted lap siding that withstands the elements.
  • Luxury vinyl planks: Experience the durability and low-maintenance benefits of luxury vinyl planks for your flooring.
  • Shaker style/European style cabinets: Enjoy the elegance and functionality of our shaker style or European style cabinets.
  • Tile backsplash, 18″: Add a stylish and practical element to your kitchen or bathroom with an 18″ tile backsplash.
  • Natural stone countertops: Elevate your kitchen and bathroom spaces with luxurious and durable natural stone countertops.
  • Closet and pantry shelving: Maximize storage efficiency with our customizable shelving solutions for closets and pantries.
  • Pre-assembled vanity cabinet: Our pre-assembled vanity cabinet comes complete with a countertop and splash piece backsplash.
  • Acrylic shower enclosure: Experience the beauty and low-maintenance benefits of an acrylic shower enclosure.
  • Plumbing fixtures and light fixtures: Our package includes high-quality plumbing fixtures and light fixtures as per the plan.

  • Frequently Asked Questions

    What kinds of ADUs are there?

    Anyone in California can build one of the four ADU types: a detached, an attached, a junior, or a converted one. All of them differ by the proximity to the main house, size, and way of construction. Depending on your preferences and lot specificities, a particular ADU type can be chosen.

    What are the legal regulations for ADUs?

    ADUs in California can’t be higher than 16 ft or bigger than 1,000 sq ft. An attached ADU cannot exceed half of the primary residence’s area. Also, all ADUs must follow the rear and side setback regulations of four ft. The front property line setback is usually at least 60 ft. For converted ADUs, zoning regulations are not applied.

    Is an ADU a good investment?

    Building an ADU in California can be one of your best investments. Not only it increases the overall value of your property, but it also allows you to create an extra source of money by renting out the place. What is more, an ADU can be quite beneficial to you as a homeowner as well. One might build a guest house or a home office right in their backyard.

    Other Renovation Services in Dunnigan

    Serviced ZIP codes: 95937

    #1 ADU Builder with the most permits in the Sacramento area

    Thousands of Customers Can't be Wrong!

    Robert & Clara H.
    A+ Construction & Remodeling really nailed it with our detached ADU! Their team's always-on attitude was a lifesaver, and the pros at A+ not only answered all our questions, but made the whole process a breeze. From plans to final inspection - 100% great work. Plus, having a chat where we could go over pictures and get quick answers.
    Peter D.
    A+ Construction & Remodeling helped me turn my property into a profitable investment with their ADU designed for Airbnb. The well-planned design and top-notch construction attract guests, and the extra income has been a game-changer. I highly recommend their services to anyone looking to add value to their property through short-term rentals.
    Testimonial Jerry & Sheron S
    Jerry & Sheron S.
    We hired A+ Construction & Remodeling to convert our garage to an ADU. Both our project manager and the construction team were pleasant to work with. They were always on time and managed to finish the project even before the deadline they set for it. We are extremely pleased with the outcome. We would recommend A+ to anyone considering a home remodel or new construction.
    Bill W.
    A+ Construction & Remodeling did an excellent job building an ADU for my parents. The construction team was efficient and attentive, ensuring that the project was completed on time. A+ is an ideal choice for anyone looking to build an ADU for their family. I highly recommend them.
    Nancy B.
    Our 2-story ADU by A+ Construction & Remodeling is great! These team is total professionals, always ready to help. They not only had all the answers to our questions but also guided us through the details of plans and permits.
    Michael & Karen M.
    A+ team build an ADU that we turned into a home office. Their construction approach maximizes functionality and creates a productive and inspiring workspace. We highly recommend A+ as the top choice for those looking to build an ADU.