As trusted residential ADU contractors in Rhode Island & Massachusetts, we specialize in designing and building accessory dwelling units (ADUs) to add value and functionality to your home. Navigating zoning laws and obtaining permits for ADU construction in Rhode Island & Massachusetts requires expertise and precision, which is why choosing the best ADU contractors in RI is essential. Our team of skilled contractors in Rhode Island & Massachusetts specializes in simplifying the process, ensuring your project complies with all local regulations.

Our proven Florida Made ADU system gives you a move-in ready ADU in just 8-12 months!

With every project we undertake, we treat your home as if it were our own, always making sure that there is only as minimal disruption as possible while maintaining a clean and safe work site. Ranging from 60 days in places such as Elk Grove, and up to 5-6 months in other cities, we won’t be naming names… For those wanting even more room, our 1197 sqft is a fantastic choice! Three bedrooms and two bathrooms provide enough room for growing families or those who love to entertain. Yes, all our units include ductless mini splits for energy-efficient heating and cooling. Whatever your site looks like, we can offer guidance to help you build the home that best fits your needs.

Each type has its benefits, depending on budget, space, and intended use. After we’ve determined the goals for your project and the best location for the ADU, we’ll start working on the design. We’ll create a custom floor plan that meets all of your needs and takes advantage of the available space on your property.

Recent legislation ensures a maximum 60-day turnaround for permit approvals, streamlining the process for homeowners. The perfect compact solution for a backyard office, creative space, or guest suite! This 192-square-foot unit may be small, but it offers major flexibility.

About ADUs in Boston

From our initial consultation to handing over your keys, we will be with you through it all. Our 7 step ADU Process and Five-Star Performance Checklist, ensure a smooth construction process and a qualify finished product, every time. Oren is a very reliable individual that looks to resolve problems in lieu of identifying them.

adu sample designs

With over 50 years of experience and three generations of family expertise, New England Outdoor stands out as a leading custom ADU builder in the region. Our legacy of delivering top-notch custom and pre-fabricated garages—coupled with our advanced ADU designs—ensures that your project will be handled with precision and care. Our custom-built ADUs are more affordable than factory-built or prefab options, especially when considering planning, permitting, site work, and construction.

These units are often used to house elderly family members, providing them with independent living while staying close to loved ones. The Hidden Pond plan showcases a thoughtfully designed open area that seamlessly combines the living, dining, and kitchen spaces, maximizing the efficiency of the compact layout. The home features two bedrooms, each complemented by a full bathroom for additional privacy and convenience.

• They offer a flexible solution for extra space, whether for family, guests, or rental income.
• Factors such as the project’s complexity, scope, and the resources required will all influence the timeline.
• Our goal is to make your home building journey as easy as possible.

Can an ADU encroach into the front yard in San Diego?

Since 2009, we’ve helped homeowners throughout the Sacramento region upgrade their property’s comfort level, usable space, and resale value with premium quality backyard structures. In 2025, most San Diego ADUs take about 10–16 months from first consultation to move-in, with construction itself averaging 6–12 months once permits are issued. San Diego also offers a 30-day expedited review for projects using pre-approved standard plans, which can shorten the overall schedule. Detached backyard cottages usually run closer to 12 months door-to-door, while garage conversions and interior ADUs may finish faster. Complex sites, service upgrades, or coastal permits can extend the process, so planning with complete intake documents and early utility coordination is key (San Diego Housing Commission).

Tiny House

Transform your property with Nonna Homes, the leading ADU contractors in Sacramento. We specialize in designing and building custom ADUs that enhance your home’s functionality, value, and style. Whether you need extra space for family, a rental unit, or a private retreat, our expert team ensures a seamless process from design to completion. As a trusted ADU builder, we handle permits, construction, and every detail in between. Experience high-quality craftsmanship and energy-efficient designs tailored to your needs. Start your ADU project today with Nonna Homes—Sacramento’s premier choice for custom ADUs built to perfection.

ADU Builders San Diego

At Little Home Builder, we specialize in new ADU construction in Denver, Colorado. Increase your home’s value and square footage with our new construction builds, choosing your own ideal floor plan to meet your unique needs. ADUs contribute to a vibrant community by creating additional housing options that accommodate diverse living situations and support local development. As housing costs continue to rise, ADUs play a crucial role in increasing the availability of affordable living options in Carlsbad, benefiting both individual homeowners and the wider community.

That means most previous zoning hurdles (like owner-occupancy requirements or discretionary approvals) have been removed. However, interpretation of the new regulations can still vary by city or town. Some localities may introduce design guidelines, height restrictions, or site prep requirements. That’s why working with an experienced local builder is key to navigating the process smoothly.

Building an accessory dwelling unit (ADU) begins with an initial consultation to understand your goals, assess your property and discuss options. The next step involves design and plans, translating your vision into a tangible blueprint. This leads us to the crucial phase of securing permits, navigating the complexities of regulations to ensure compliance. Robinson Renovation & Custom Homes specializes in designing and building unique ADUs, ensuring they meet local zoning and square footage requirements.

We’ll collaborate closely with you to create a space that reflects your style and meets your functional needs. We collect competitive bids from our vetted subcontractors, select the right fit, and oversee every step—keeping you informed through your Homeowner Portal. Track your progress, view plans and permits, log issues, and message our team. Our team oversees everything so your project stays on track and on budget. ADUs are growing popular in San Diego, offering housing for family or rental income, but demand substantial upfront investment.

CASK is the leading choice for dependable ADU builders in St. Petersburg, Florida, offering unparalleled expertise in constructing ADUs, additions, and new homes for over 15 years. Discover the process and benefits of building ADUs, from cost-effectiveness to personalized living solutions from CASK Construction’s President and Co-Founder Calin Noonan. We redesigned the homebuilding process to be faster, more efficient, and more impactful for all. We roll up our sleeves and get the job done, while providing 100% transparency every step of the way so you’re never in the dark about costs or timeline. Our licensed Colorado General Contractor and local trades team will handle the build onsite from start to finish. We keep homeowners informed with regular progress updates and walk throughs.

Working with a specialist ADU construction company ensures you get the most for your hard-earned dollar. We also offer numerous upgrades to further enhance your tiny home’s comfort and functionality. Have one of our ADU Experts assess your property to determine where you can place a tiny home and give you an estimate. When we imagine the idea of a permanent tiny house or a tiny house on wheels, many questions flood our minds.

Top Tiny Home Builder & ADU Contractor

For more information, feel free to review our testimonials, exploring our work and dedication to any project. Welcome to Florida Made Tiny Homes, the premier ADU builder in Florida. With more than three decades of industry experience, we have built a solid reputation for providing top-notch services, quality craftsmanship and transparent pricing. Our unwavering commitment to excellence is fueled by our passion for building Florida Made accessory dwelling units (ADUs) tailored to your unique needs.

We handle everything, from ADU design to construction, so you don’t have to worry. Our turnkey ADU system is designed to make the entire process smooth and stress-free for you. When you hire Dakota Cabins LLC, you partner with the best rated ADU contractor in the area. An ADU can range from a small studio of around 300 square feet to a larger unit of up to 1,200 square feet.

Home Plans

I’ve done two projects with them — most recently an outdoor remodel. We’re a licensed and bonded Portland ADU design team & builder specializing in the greater Portland, Oregon and Willamette Valley areas. Bridging families, boosting incomes, and building affordable homes at the intersection of craftsmanship and mission. Once the design is finalized, we present a clear, fixed-price proposal outlining the full scope and cost of the project.

A side-by-side cost comparison usually reveals a comparable total investment for stick-built and prefab ADUs. Our pricing includes foundation, construction, elevation, finishes, design and engineering, permit submission and more. The variable costs that are not included are permit fees from the city or county and hookup fees. When we deliver an estimate, it will include a breakdown of all costs, including the variables so that you understand your total investment.

Cost and ROI of Building an ADU in Los Angeles

Our professional team is accomplished at designing both exterior and interior space including accessory dwelling units, in-law units, backyard cottages, secondary units, and Granny flats. Constructing an ADU in Riverside County can be a transformative experience for your property, and USModular is the best partner to bring your vision to life. As trusted Riverside County ADU builders, we provide everything you need to expand your living space, from planning to construction to inspection. It’s a fast, efficient and personalized process that caters to your unique needs and preferences. The current housing market highlights the urgency for additional living options. With rising property prices and limited availability, building an ADU is a strategic move that increases your property’s value while meeting growing demand for rental spaces.

Applications, Project Planning & City Permitting

Our streamlined process ensures a stress-free experience with clear communication and complete transparency, transforming your property with style and functionality. If your property is in a High or Very High Fire Hazard Severity Zone, special ADU rules apply. As of 2025, ADUs must maintain at least a 4-foot side and rear setback, even for single-story units under 16 ft tall, to create defensible space (City of San Diego). For projects using the ADU Bonus Program, lots in these fire zones must front a public street with two separate evacuation routes—bonus ADUs are not allowed on cul-de-sacs or single-access roads. In addition, while standard ADUs don’t require sprinklers if the main home doesn’t have them, bonus or affordable deed-restricted ADUs must include sprinklers. These rules, along with wildfire-resistant construction standards, are designed to ensure safety and compliance in San Diego’s high-risk fire areas.

Its’ cozy two bedrooms share a bathroom with a full-size tub or large shower stall. An unfinished full basement provides future expansion opportunities. The home maximizes functionality with ample storage solutions, ensuring that every square inch is utilized efficiently. This thoughtfully designed plan harmonizes comfort with practicality, making it ideal for modern living. With extensive experience and a dedication to superior craftsmanship, we stand out as the premier builders in San Jose. Whether you need extra space for a family member, a rental opportunity, or a home office, we are ready to help you realize your vision.

• From pouring the foundation to installing the final light switch, we’re there every step of the way.
• We understand that every inch of your property is an opportunity waiting to be unlocked.
• Let’s broaden that mental model by exploring and understanding the range of common ADU types.
• Throughout the entire process, we manage the permitting and coordinate fees, providing you with concierge-level support to ensure your ADU project progresses as efficiently as possible.
• While these structures end up similar, there are key legal and zoning differences in Tampa between ADUs and EFRs that impact overall project processes.
• At Brittivia Homes & Construction, we bring over 20 years of experience in general contracting to ensure your ADU project is a success.

Yes, building an ADU in California requires obtaining permits to ensure compliance with building codes and zoning regulations. The specific permits needed can vary by location, so it’s essential to check with your local building department. The timeline for constructing an ADU in California depends on design complexity, permitting processes, and construction methods. Typically, the process can take between 6 to 12 months from planning to completion.

Get Started Building

• Over the years, we have been working with a number of homeowners in this region and have ensured that their housing needs are met.
• The heart of the Ranch plan is an inviting open-concept layout, blending the kitchen, dining, and living rooms, making it perfect for entertaining family and friends.
• From rental spaces to personal retreats, we deliver innovative, California-compliant solutions with expert craftsmanship and a seamless process.
• Before we break ground, we’ll do the leg work to secure all permits and requirements.
• ADUs can be detached, added, or incorporated into a larger home design.
• Experience comfortable living in our 1-bedroom ADU models, starting at 436 square feet.
• A sunroom offers additional entertainment space — a garden retreat, gaming room, or use it for a formal dining space.

(Under Construction) This is our second largest design-build ADU to date. Short term rentals — Online short term rental sites like airbnb.com and vrbo.com have become increasingly popular resources for travelers in recent years. This has also been a lucrative option for homeowners with attractive living spaces near tourist destinations.

Step 7 – Handover

We handle the entire tiny home building process from start to finish. That means you get access to our expert design team, experienced permit coordinators, and skilled builders, all focused on delivering the highest quality standards. With ADU America, you can count on a tiny home that’s built to last and ready for your family or tenants to enjoy. Find out how easy it is to affordably add additional living space to your property with an accessory dwelling unit (ADU) in Sacramento.

Start Your ADU Journey Today!

It will depend on how large you want the unit to be and the features you include. But other factors, like storage, laundry units, outdoor areas, windows and natural light, lofts, and soundproofing, can all impact the final cost. These are similar to the detached ADUS but they are connected to the main house on the property. Each ADU is tailored to your unique needs and preferences, ensuring a perfect fit for your property and lifestyle. We proudly extend flexible financing options to the homeowners we serve, breaking down the full cost of an ADU into manageable payment schedules. Our guide covers every step, from permits to final finishes, keeping your project on track.

Also equipped with a full kitchen, bathroom, and a spacious layout that maximizes space utilization, our tiny homes are ideal for singles, couples, and those seeking rental opportunities. State law prohibits local jurisdictions from imposing owner-occupancy requirements for ADUs approved between January 1, 2020, and January 1, 2025. However, it’s important to Roofing contractors comply with local rental regulations and zoning laws.