Kuhlman Scott Architects: ADU Design in San Diego County
Kuhlman Scott Architects is an architectural firm based in San Diego County that specializes in designing modern Accessory Dwelling Units (ADUs) for homeowners throughout the region. Led by founder Todd Kuhlman, the firm focuses on creating well-considered, space-efficient living environments that serve a range of purposes — from family accommodations and in-law suites to long-term rental units.
Todd Kuhlman brings over 30 years of experience as a licensed architect, along with a background as a general contractor and developer. Since 1989, he has directed the design, development, and construction of homes, mixed-use projects, commercial buildings, and multi-family residential communities across Illinois, Arizona, and California. The team at Kuhlman Scott Architects includes architects, general contractors, and civil engineers working together on each project.
What Kuhlman Scott Architects Offers in ADU Design
The firm's approach to accessory dwelling unit design centers on treating each ADU as a complete, independent living space rather than a secondary addition. Their designs are tailored to complement the primary residence while standing on their own in terms of quality and livability. This applies whether the project involves a detached backyard cottage, an attached addition, or a garage conversion.
Key design considerations the firm incorporates into their ADU projects include:
- Modern architectural styling suited to Southern California homes
- Open, light-filled interiors with attention to natural light
- Seamless indoor-outdoor flow
- Premium finishes and materials
- Intelligent, space-efficient layouts
- Privacy and independence for occupants
Each accessory dwelling unit is customized to the specific property, neighborhood context, and homeowner goals. The firm does not rely on generic or prefabricated plans — instead, every design is developed with the site and client in mind.
Kuhlman Scott Architects works on a range of ADU types, including detached ADUs, attached ADUs, and garage conversions. They also have familiarity with Junior ADUs (JADUs), which are smaller units — typically up to 500 square feet — created within the existing structure of a home. A standard ADU, by contrast, is a fully independent unit with its own kitchen, bathroom, and entrance.
ADU Regulations and Considerations in San Diego County
California state law generally allows homeowners to build ADUs up to 800 square feet by right, with larger units potentially permitted depending on lot size, zoning, and local regulations. Some properties may qualify for units of 1,000 square feet or more. An experienced architect can assess a specific property and determine what size and configuration is allowable under local codes.
The cost of building a premium ADU in San Diego County varies based on size, site conditions, and finish level. Architect-designed ADUs with higher-end materials typically involve a greater upfront investment than basic prefab options, but they can offer stronger long-term value in terms of livability, rental income potential, and resale appeal.
In most parts of San Diego County, homeowners are permitted to rent out their ADU to long-term tenants. Many choose to build ADUs specifically as income-generating units or as private guest residences. Local regulations generally require rentals to be long-term — typically 30 days or more — though specific rules can vary by city.
The timeline for designing and building an ADU depends on permitting requirements, project complexity, and construction scheduling. The design and permitting phase alone can take several months. Working with an architectural team that understands local regulations can help reduce delays and keep the process moving efficiently.
For homeowners in San Diego County considering an ADU — whether as a granny flat, backyard cottage, casita, or in-law suite — Kuhlman Scott Architects offers architectural design services focused on quality, functionality, and long-term property value.
