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Business Details
38 Years
experience
Trusted Architects in Petaluma, CA
ADR Architectural Design & Restoration has been serving Sonoma County, the Bay Area, and beyond from our Petaluma base since 1988. Our diverse portfolio spans historic Craftsman cottage remodels to multimillion-dollar hotels, restaurants, and commercial projects. We maintain strong relationships with local developers, builders, and artisans, assembling tailored professional teams for each project to ensure seamless execution from concept to completion. Our services include site design evaluation, schematic design development, planning and permit submittal, and construction administration.

We prioritize sustainable practices through affiliations with LEED, the US Green Building Council, and Build It Green. Our principals bring over 60 combined years of architectural experience, with expertise in commercial, residential, hospitality, and historic preservation projects. Both owners hold California architectural licenses and contractor certifications, with additional Texas licensing and specialized training in accessibility codes and modern drafting technologies.
Services
Residential Design Commercial Architecture Historic Restoration Hotel Projects Restaurant Design
Details
  • Year established: 1988
Highlights and features
  • 30+ years of combined architectural experience in Northern California
  • LEED Accredited Professionals with sustainability certifications
  • Established relationships with local builders and artisans
  • Specialized expertise in historic preservation and accessibility codes
  • Licensed architects with multimillion-dollar project experience
Associations and certifications
  • LEED AP
  • Build It Green Professional
Services
Residential Design
We create custom residential designs ranging from historic cottage renovations to modern single-family homes. Our team specializes in code-compliant solutions that balance aesthetic vision with functional living spaces. With deep local knowledge, we navigate permitting processes efficiently while maintaining design integrity.
Commercial Architecture
Our commercial architecture services cover office buildings, retail spaces, and mixed-use developments up to four stories. We focus on creating functional environments that meet accessibility standards while optimizing spatial efficiency. Our experience includes both new constructions and adaptive reuse projects for commercial clients.
Historic Restoration
Specializing in historic building restoration, we preserve architectural character while implementing modern updates. Our expertise includes structural reinforcement, material conservation, and code-compliant adaptations for listed buildings. We've completed numerous landmark projects maintaining historical accuracy with contemporary functionality.
Hotel Projects
We design and renovate hospitality spaces including hotels, resorts, and boutique accommodations. Our approach combines guest comfort with operational efficiency, meeting industry-specific requirements for safety and accessibility. Recent projects include the Sheraton Hotel at Petaluma Marina and Texas-based properties.
Restaurant Design
Our restaurant design services address both aesthetic and operational needs, from kitchen layouts to dining room configurations. We ensure compliance with health codes and accessibility standards while creating inviting atmospheres. Completed projects include fine dining establishments and high-traffic commercial food service venues.
People
Richard Brereton
Owner, Architect
Licensed architect with 30+ years' experience in California and Texas. Specializes in commercial and residential projects up to four stories. LEED Accredited Professional and Build It Green certified. Holds Cal Poly San Luis Obispo architecture degree with honors.
Charles Church Hildreth
Owner, Architect
Berkeley-educated architect with 30+ years' Northern California experience. Focus on historic preservation and residential design. Licensed contractor operating Hildreth Renovations since 1989. Active in local community programs and Petaluma Chamber of Commerce.
Questions
What architectural services do you specialize in?
We specialize in residential design, commercial architecture, historic restoration, hotel projects, and restaurant design across Northern California and Texas.
How long have you been in business?
Our principals have worked together since 1988, with over 60 combined years of architectural experience in California and Texas markets.
Do you handle historic building renovations?
Yes, we have extensive experience with historic preservation projects including listed buildings and landmark structures across Sonoma County.
What areas do you serve?
We primarily serve Sonoma County, the Bay Area, and select Texas locations like San Antonio from our Petaluma headquarters.
Are you LEED certified?
Yes, we have LEED Accredited Professionals on staff and maintain Build It Green certifications for sustainable design practices.