Business Details
39 Years
experience
Custom ADU Design and Residential Architecture Services
Founded in 1987 as KT+A Architects, our firm has evolved into DIY Architectural, a technology-driven architectural service specializing in residential design. We empower clients to actively participate in the design process through digital collaboration tools while maintaining traditional architectural standards. Our team combines decades of experience in custom homes, additions, and remodels with innovative digital workflows to reduce costs and streamline project timelines.We specialize in creating permit-ready construction documents for accessory dwelling units (ADUs), custom homes, and renovations while providing expert guidance through local regulatory requirements. Our approach emphasizes client education, sustainable practices, and leveraging technology to deliver high-quality architectural solutions tailored to individual needs.
Services
ADU Design
Home Additions
Remodel Services
Custom Homes
Architectural Consulting
Details
- Year established: 1987
Highlights and features
- 35+ years of residential architectural experience since 1987
- Specialized ADU design expertise with California compliance knowledge
- Digital collaboration tools reduce project costs and timelines
- Full-service permitting and construction documentation support
- Licensed architects with multi-state experience and AIA certification
Associations and certifications
- American Institute of Architects (AIA)
What people say
Impeccable work
Smooth process
Highly recommend
Cost-saving approaches
Transformed our home
Services
ADU Design
Design of code-compliant accessory dwelling units ranging from 366 to 1,200 square feet. Our ADUs include modern layouts with efficient space planning while meeting California's evolving regulations. Services cover site analysis, floor plans, and permit documentation.
Home Additions
Custom addition design for single and multi-story homes. We create functional extensions that blend with existing architecture while maximizing living space. Services include structural analysis, spatial planning, and code compliance verification.
Remodel Services
Full home and partial remodel design services. Our team transforms outdated spaces into modern functional areas while maintaining structural integrity. Services include material selection, layout optimization, and permit-ready documentation.
Custom Homes
From concept to construction documents, we design custom homes tailored to client needs. Services include site-specific design, energy efficiency planning, and integration with local zoning requirements for unique residential projects.
Architectural Consulting
Expert architectural advice for DIY projects and professional collaborations. Services include code interpretation, construction document review, and technical support through digital platforms for self-guided building projects.
People
Kevin Tohill
Founder & Licensed Architect
Licensed architect with 35+ years experience in residential design. AIA member since 1986, holds California and Oregon licenses, and earned degrees from Pierce College and Woodbury University. Specializes in client-driven design processes and digital architecture solutions.
Questions
What are ADUs and how can they benefit my property?
ADUs (Accessory Dwelling Units) are secondary housing units on single-family lots that provide rental income potential, housing for family members, and increased property value while complying with California state regulations.
What services does DIY Architectural offer?
We specialize in ADU design, home additions, custom home design, renovations, and architectural consulting with both digital collaboration tools and traditional architectural services.
How does your design process work?
Clients document existing conditions using measurement tools, collaborate online with our architects, receive construction documents, and obtain necessary permits through our guided process.
Do you work outside California?
While our office is in California, we can assist with projects in other states through our digital collaboration platform and licensed architectural services.
Can you help with permit applications?
Yes, we prepare complete construction documents and guide clients through local agency requirements to obtain building permits for their projects.
