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Business Details
45 Years
experience
Award-Winning Residential & Commercial Architects in San Francisco
Kotas Pantaleoni Architects has been delivering innovative architectural solutions since 1981. Our six-member team specializes in creating cost-effective, livable buildings tailored to unique urban sites while maintaining community integration. We focus on collaborative client relationships to address specific needs and preferences. Our expertise spans residential, commercial, and mixed-use developments across the San Francisco Bay Area. Recognized for award-winning designs like the Tansev House and Tower Car Wash, we combine contemporary aesthetics with functional practicality.

Our work has earned accolades including Gold Nugget and AIA/Sunset Magazine awards. Published in prominent architectural journals and books, our firm maintains a legacy of excellence in urban infill projects. We prioritize energy efficiency and thoughtful design in every project, from single-family homes to large-scale commercial developments. Our principals bring LEED certification expertise to sustainable building practices. With offices in San Francisco and Ventura, we serve clients throughout the Bay Area and beyond.
Services
Residential Architecture Commercial Architecture Mixed-Use Developments Urban Design Energy-Efficient Infill
Details
  • Year established: 1981
Highlights and features
  • We have over 40 years of experience in Bay Area architectural design
  • Our team includes LEED-certified professionals specializing in sustainable design
  • We focus on collaborative client relationships for tailored solutions
  • Our work has won Gold Nugget and AIA/Sunset Magazine awards
  • We specialize in transforming challenging urban sites into functional spaces
Services
Residential Architecture
We create innovative residential spaces that maximize functionality and aesthetic appeal. Our designs adapt to challenging urban sites while maintaining community character. With expertise in single-family homes and multi-family developments, we focus on creating livable, energy-efficient spaces that meet modern needs while respecting their surroundings.
Commercial Architecture
Our commercial projects combine practical functionality with striking visual design. We specialize in creating spaces that enhance business operations while integrating with urban environments. From office buildings to retail spaces, our solutions prioritize accessibility, sustainability, and long-term value for commercial clients across the Bay Area.
Mixed-Use Developments
We design mixed-use developments that optimize land use while creating vibrant community spaces. Our approach balances residential, commercial, and public elements in cohesive designs. These projects emphasize walkability, sustainability, and contextual harmony, transforming underutilized urban sites into dynamic, multi-functional environments that serve diverse community needs.
Urban Design
Our urban design expertise addresses complex site challenges and community integration. We develop comprehensive solutions for infill projects that respect existing neighborhoods while introducing modern design elements. Our work includes master planning, streetscape improvements, and adaptive reuse projects that enhance urban environments and promote sustainable development patterns.
Energy-Efficient Infill
We specialize in creating energy-efficient buildings that maximize urban infill potential. Our sustainable approach incorporates passive design strategies, efficient material use, and environmentally conscious systems. These projects demonstrate how modern architecture can reduce environmental impact while addressing density challenges in established urban areas through innovative, code-compliant solutions.
People
Anthony A. Pantaleoni
Principal Architect
LEED-certified principal architect with over 40 years of Bay Area experience. Specializes in transforming complex urban sites into award-winning designs. Leads the firm's commitment to sustainable, community-integrated architecture while maintaining oversight of all major projects.
Milan Gill
Senior Project Manager
LEED AP senior project manager overseeing complex architectural projects from concept to completion. Brings technical expertise and sustainability focus to residential and commercial developments. Coordinates with clients and consultants to ensure design integrity and regulatory compliance throughout the building process.
Mike Guillory
Project Manager
Project manager handling day-to-day coordination of architectural projects. Specializes in translating design concepts into buildable solutions while maintaining the firm's signature aesthetic. Manages timelines, budgets, and construction documentation for diverse residential and commercial developments.
Bert Martinez
Senior Project Manager
Senior project manager with extensive experience in Bay Area architectural projects. Focuses on technical execution and construction administration. Ensures all projects meet regulatory requirements while maintaining the firm's commitment to design excellence and client satisfaction.
Theresa Gotshalk
Office Manager
Office manager overseeing daily operations and client communications. Coordinates administrative functions while serving as primary point of contact for business inquiries. Maintains organizational efficiency across both San Francisco and Ventura office locations.
Questions
What architectural services do you specialize in?
We specialize in residential, commercial, and mixed-use developments with a focus on urban infill projects. Our expertise includes energy-efficient design and adaptive reuse of challenging sites.
How long has your firm been in business?
Kotas/Pantaleoni Architects has been designing award-winning buildings since 1981, with principals maintaining continuous architectural practice in the Bay Area since that time.
What makes your firm unique?
We combine over 40 years of local experience with innovative design approaches for difficult urban sites. Our small team maintains personal client involvement while delivering large-scale project expertise.
Do you work outside San Francisco?
While our primary focus is the San Francisco Bay Area, we have completed projects throughout Northern California and maintain an office in Ventura for Southern California projects.
What awards have you received?
Our work has been honored with Gold Nugget, DIFFA, and AIA/Sunset Magazine awards. Notable projects include the Tansev House and Tower Car Wash recognitions.
How do you approach sustainable design?
We integrate energy-efficient strategies and LEED-certified expertise into all projects. Our approach emphasizes passive design solutions and material efficiency while maintaining architectural integrity.