Ten Seventy Architecture combines a love of modern architecture, state-of-the-art technology, and a proprietary process to help our clients build accessory dwelling units in Southern California. With over a decade as a leading ADU firm, our expert architects have mastered the ins and outs of the design + build process to bring your dream project to life.
We’ve recently released our own pre-designed ADU plans for San Diego residents. These designs are now available for homeowners + property investors in the greater Los Angeles area.
Accessory dwelling units (also known as granny flats, in-law suites, companion units, and guest houses) have become popular projects in Southern California for homeowners and property investors alike. ADUs provide additional living space for family, friends, or tenants, expanding the livable square footage on a given lot. These residences can be built as part of an existing or soon-to-built home, or detached from the main home as a separate structure altogether.
When you work with Ten Seventy Architecture, our team of experienced architects will walk you through every option available for your ADU project. We've been at the forefront of accessory dwelling unit development for over a decade, staying up-to-date with the latest advancements and regulations. Now, we've used this expertise to offer pre-designed ADU plans for Los Angeles homes. These designs are based off of our self-funded project in San Diego, the Prince House ADU.
If you’re interested in reviewing frequently asked questions and in-depth project guides, check out our ADU Resource Center. Once you're ready to take the next step, click the button below to get in touch with our team.
Interested in saving time, money, and stress while building an ADU? Our pre-designed ADU plans are expertly developed to help you build an ADU with modern + minimalist design, without the hassle. While these plans are pre-designed, they’re anything but cookie-cutter and include many customization options available to make the space your own.
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Over the past 10+ years, we've specialized in the ADU building process. During this time, we’ve worked
on incredible projects with our clients throughout Southern California. If you’re looking for inspiration
for your next project, check out our portfolio below.
Our modern architecture studio is a leading firm in the Southern California area, specializing in ADU design + builds. Our expert architects love partnering with our clients to create minimalist + innovative designs that will improve their quality of life for years to come. We put your project goals and feedback at the center of every design.
Sean is a graduate of NJIT, where he studied architecture + industrial design. He relocated to San Diego in 2009 to open the boutique architecture studio, Ten Seventy Architecture, focussing predominantly on modern, minimalist, + creative architecture. Sean has also won various awards for modern furniture he has designed.
California Registered Architect
LEED Accredited Professional
Bachelor of Architecture (NJIT)
Certification in Project Management (SDSU)
Margaret is also a graduate of NJIT, where she studied architecture + civil engineering. She relocated to San Diego in 2010 working at a LEED consulting firm before taking a job as a project manager in San Diego’s permit office for 5 years. Later she brought her skillset to Ten Seventy Architecture where she manages projects + permitting.
LEED Accredited Professional
Bachelor of Architecture (NJIT)
Masters of Civil Engineering (NJIT)
Certification in Project Management (SDSU)
Shane is the most senior Architectural Designer at Ten Seventy Architecture. He is assigned to larger projects which have high aesthetic requirements. Shane brings an expertise in architectural rendering to the Ten Seventy Architecture team. His design work is streamlined and considerate.
Jen-Ni is our Architectural Designer who works on projects which require greater graphic illustration. She works on our aesthetic commercial projects as well as small modern ADU projects that require tight planning and out-of-the-box thinking. Jen-Ni is a talented designer who can develop good ideas into beautiful architecture.
Nolan is the team’s Architectural Designer who works on custom residential projects which require the highest level of attention to detail. He has worked to refine our 3D printed study models as well as build templated architectural processes. Nolan brings a modernists rational to our projects.
We specialize in modern + minimalist architectural design. On occasion, we work in other styles such as contemporary, prairie style, craftsman, or transitional.
Our designs start @ $12,000-15,000 for smaller projects.
Yes, we do! If you're interested in a virtual consultation you can sign up using the form at the bottom of this page. Once you reach out, we'll be in touch to schedule a meeting.
Yes! We have designed custom ADUs + can design one for you. Ask us about our predesigned 1-Bedroom / 1-Bathroom ADU, offered at a discount.
Yes! We've designed commercial tenant improvement projects over the last decade. We're happy to help you w/ your commercial project.
Structural engineering costs will vary depending on the design proposed. Permit fees are paid to the municipality, as well as cost to facilitate the permit process. Some projects may require energy calculations or additional engineering. More complicated permits may require additional presentation drawings.
Schedules will depend on the project scope. Generally, it takes around 1-2 months to create a design working w/ a client, then 1 month to engineer/detail the project.
Permits are charged by the municipalities + can vary greatly. New homes may be subject to additional municipal impact fees.
Standard projects not located in the California Coastal Zone can take around 3 months to permit due to the City of San Diego's new "streamline" #DigitalDSD process. Projects in the Coastal Zone or requiring a Site Development Permit can take around 8 months or more to permit.
We have won a few awards for modern furniture which we design by special request.