Feb 20, 2026
ADU Design San Dimas, CA
Turn extra space on your property into something useful, beautiful, and built around the way you live. Uni Construction + ADU Design helps San Dimas homeowners and property owners with ADU design, plans, permits, and build support for detached ADUs, attached ADUs, junior ADUs, garage conversions, modular ADUs, and custom layouts.
Get a Free QuoteCall 213-306-5601
Since 2014
Custom ADU solutions
Design-build support
Residential and commercial
San Dimas, CA service area
Proudly Serving San Dimas Neighborhoods
We proudly serve homeowners and property owners across San Dimas, including:
-
Butterfield Ranch
-
Via Verde area
-
San Dimas Canyon area
-
Puddingstone area
-
Civic Center Park
-
Via Verde Park
-
Frank G. Bonelli Regional Park
Custom ADU Builder and Contractor Services in San Dimas
If you are looking for a practical way to add living space, create room for family, or make better use of your lot, our team can help you move forward with a clear plan. We provide ADU design in San Dimas with support for layouts, ADU plans, permit coordination, and build-ready project guidance.
Whether you are starting with an idea, a rough sketch, or a property that needs a smarter layout, Uni Construction + ADU Design helps simplify the next steps. Instead of bouncing between different teams, you get one direct path from concept to construction support.
ADU design, plans, permits, and build support
We help with the key pieces that matter most:
- ADU design and space planning
- ADU plans and floor plans
- Permit-ready preparation and coordination
- Detached and attached ADU planning
- Junior ADU and garage conversion solutions
- Modular ADU and custom ADU options
Built for San Dimas homeowners and property owners
San Dimas is a residential community in Los Angeles County, and the city’s ADU materials make clear that local projects follow specific standards and permit requirements. San Dimas also has a warm, dry summer season and mild winters, which makes backyard space and garage conversion opportunities especially practical for many property owners.
Why ADUs Make Sense for San Dimas Properties
An ADU gives you more freedom without asking you to leave the property you already own. It can create extra room now while also adding long-term flexibility later.
Extra living space without leaving your property
A well-planned ADU can help you add:
- private guest space
- room for family
- a quiet home office
- a more independent living setup
- better use of a backyard or garage area
A practical option for family, guests, or rental use
Many property owners choose an ADU because they want space that works harder. Some want a detached backyard unit. Some need an attached ADU that blends with the main home. Others want to turn a garage into something livable and useful.
The right answer depends on your lot, your goals, and how you want the space to function day to day.
ADU Options We Build in San Dimas
Detached ADU
A detached ADU is a strong choice when you want privacy, separation, and a stand-alone space in the backyard. It works well for guests, family use, rental flexibility, or a dedicated office or studio.
Attached ADU
An attached ADU connects to the main house while providing a separate living space. Plan its entrance, privacy and connection to the existing home together, so the addition works for both households.
Junior ADU
A junior ADU can be a practical answer for homeowners who want a smaller, efficient living space within the existing footprint of the home.
Garage Conversion
A garage conversion can turn underused square footage into a more valuable and functional part of your property. This is one of the most practical ADU paths for many homeowners who already have a strong base structure to work with.
Modular ADU
For the right project, a modular ADU can offer an efficient path to added space while still being planned around your property and your needs.
Custom ADU plans and floor plans
Some projects need more than a standard layout. We help create custom ADU plans and ADU floor plans that fit your lot, your use case, and the way you want the finished space to feel.
Why Choose Uni Construction + ADU Design
You do not need big claims. You need a team that understands the work, communicates clearly, and helps you move through the project with fewer surprises.
Serving San Dimas since 2014
We have been serving clients since 2014, bringing years of hands-on experience to projects that need planning, coordination, and a smart design-build mindset.
Custom ADU solutions for residential and commercial properties
Every property is different. Every goal is different. That is why our approach stays flexible. We build around the project instead of forcing the project into a one-size-fits-all box.
A direct design-and-build approach from start to finish
From early planning through permits and construction support, we help keep the process organized and easier to follow. That means fewer loose ends, better communication, and a clearer path from idea to finished space.
Our ADU Process: Plan, Design, Permit, Build
A lot of people delay their ADU project because the process feels confusing. We keep it simple.
Project consultation
We start by learning about your property, your goals, and the type of ADU you want to build. This is where we begin shaping the right direction for the project.
ADU design and planning
Next, we work through layout ideas, ADU designs, space planning, and the best way to use your lot. This is where custom ADU plans and floor plans begin to take shape.
Permit coordination
Once the design direction is clear, we help move the project toward permit-ready documentation and coordination. San Dimas provides official ADU guidance and permit-related requirements, so this step matters.
Construction and completion
After planning and permit steps are in place, the project moves into build support and construction execution. The goal is simple: deliver a finished ADU that works well, looks right, and feels like it belongs on your property.
ADU Design Ideas for Backyard and Garage Conversion Projects
A good ADU should feel practical first, but it should also feel comfortable, polished, and easy to live in
Detached backyard ADU concepts
Detached backyard ADUs work well when you want a little more privacy and separation from the main house. Popular ideas include: open living and kitchen layouts, bright windows and simple modern lines, compact but efficient storage, private entry paths, outdoor connection to the yard.
Attached and garage conversion layouts
Attached ADUs and garage conversion projects often work best when the layout feels seamless and efficient. The goal is to make the space feel intentional, not squeezed in.
Custom finishes and practical space planning
Whether you want a small ADU, a modern ADU, or something more traditional, the best results come from thoughtful planning. Smart layouts, durable finishes, and a clean flow make a big difference in how the space feels every day.
What Affects ADU Project Cost in San Dimas?
Every ADU project is different, so pricing depends on the choices made early in the process.
Size, layout, and ADU type
A detached ADU, attached ADU, junior ADU, and garage conversion all come with different construction needs. The size of the space and the layout complexity will affect the total scope.
Site conditions and permit requirements
Lot conditions, access, utility needs, and local permit requirements can all shape the cost of the project. San Dimas has official ADU guidance, which is why a permit-aware plan matters from the beginning.
Custom design and build scope
The more custom the design, materials, and finishes, the more the scope can shift. That is why a project-specific quote matters more than a guess.
Frequently Asked Questions About ADU Services in San Dimas
We help with detached ADUs, attached ADUs, junior ADUs, garage conversions, modular ADUs, and custom ADU layouts based on the property and project goals.
Yes. We help guide the project through design, ADU plans, and permit coordination so the process feels more organized and easier to manage.
Yes. We support both detached and attached ADU projects depending on what makes the most sense for your lot and your goals.
Yes. Garage conversions are one of the most practical ways to create usable living space from an existing structure.
The main factors include ADU type, square footage, lot conditions, permit requirements, design complexity, and the level of finish you want.
You can contact Uni Construction + ADU Design for a free quote by calling (213) 306-5601 or using your website contact form.
Get a Free Quote for ADU Design in San Dimas
If you are ready to turn extra space into something more useful, we are ready to help you plan the next step.
Whether you want a detached ADU, an attached ADU, a junior ADU, a garage conversion, or custom ADU plans, Uni Construction + ADU Design can help you move forward with a clearer process and a practical design-build approach.
