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Custom Home Architecture & Sustainable Design Solutions
At ZTC Architecture, we approach every project with a client-centered philosophy, designing homes that reflect your family's unique needs and lifestyle. Our team collaborates with top luxury home builders to ensure every design balances functionality with aesthetic excellence. Through detailed visualizations and 3D renderings, we bring your vision to life with precision. Our process begins with collaborative ideation sessions, followed by zoning studies and custom sketches tailored to your property's potential. With expert oversight from concept to completion, we deliver flawlessly executed projects that stand the test of time.

Our transparent pricing model guarantees quality and value throughout the architectural journey. Specializing in both traditional shingle-style and modern designs, we create spaces that harmonize with Eastern Long Island's unique environment. Our expertise extends to sustainable practices, including nitrogen-reducing septic systems for eco-conscious living. As a local firm, we maintain deep connections with the East End community and provide accessible support throughout construction. Whether you're pursuing a complete custom build or a renovation, our dedicated team transforms architectural dreams into reality.
Services
Custom home architecture New home construction Home renovations Additions legalization I/A septic systems Architectural visualization Sustainable design
Highlights and features
  • We provide client-centered architectural solutions tailored to Long Island's unique environment
  • Our team includes New York-registered architects with decades of local experience
  • We offer transparent pricing and expert project oversight from concept to completion
  • We specialize in both traditional shingle-style and modern architectural designs
  • We integrate sustainable practices including nitrogen-reducing septic system design
Services
Custom home architecture
Our custom home architecture service creates personalized residences that reflect your family's lifestyle and preferences. We combine creative design with practical functionality, ensuring each home integrates seamlessly with its environment. Our process includes zoning analysis, concept development, and detailed construction documentation.
Architectural visualization
We transform concepts into detailed visual representations using advanced visualization tools. This service includes 3D renderings and concrete building plans that help clients and builders understand the final product before construction begins. Our visualizations ensure clarity and precision throughout the building process.
Sustainable design
Our sustainable design solutions incorporate environmentally responsible materials and energy-efficient systems. We specialize in nitrogen-reducing septic systems for coastal properties and create buildings that minimize environmental impact while maintaining aesthetic appeal and functionality for modern living.
Home renovations
We specialize in transforming existing homes through thoughtful renovations that enhance functionality and aesthetics. Our services include structural modifications, space reconfigurations, and updates that maintain architectural integrity while meeting contemporary living standards and local building regulations.
Additions legalization
We help homeowners navigate the process of legalizing home additions and preparing properties for rental certification. Our expertise includes creating compliant designs, preparing necessary documentation, and coordinating with local authorities to ensure all projects meet current building codes and zoning requirements.
People
Zachary Clanahan
Principal Architect
Registered architect in New York, Hawaii, and New Jersey with over 15 years of experience in Hamptons residential design. Specializes in traditional shingle-style and modern architecture that complements Eastern Long Island's environment.
Jeremy Delgado
Design Professional
Experienced residential architect with expertise in interior design and customer experience. Brings creative insights from collaborations with brands like Nike and The North Face. Specializes in transforming conceptual ideas into detailed architectural plans.
Alicia Clanahan
Office Manager
Manages clerical, marketing, and financial operations with over a decade of service. Plays key role in project management for innovative septic system designs while supporting firm administration and client communications.
Questions
What architectural services do you offer?
We specialize in custom home design, new construction, renovations, additions legalization, and sustainable design solutions including nitrogen-reducing septic systems.
Why hire a local architect for Long Island projects?
Local expertise ensures designs complement Eastern Long Island's environment and comply with regional building codes. We provide detailed plans that reduce construction costs and connect clients with trusted builders.
What's your design process like?
Our process begins with client consultation and zoning analysis, followed by concept sketches, detailed design development, permitting assistance, and construction oversight to ensure project success.
How do you handle project communication?
We maintain open communication through scheduled appointments and regular updates. Clients can contact us directly via phone or email for project-related inquiries.
Do you work on sustainable projects?
Yes, we incorporate eco-friendly practices including nitrogen-reducing septic systems and energy-efficient designs that minimize environmental impact while meeting modern living standards.
Reviews (4)
Jackie Wells
Feb 20, 2021 Report
I highly recommend Zach Clanahan. We needed an architect to reinvent our backyard to make the space enjoyable for our family. Our contractor recommended Zach and we were impressed with his other projects in the neighborhood. We are glad we chose Zach! He thoughtfully listened to our objectives -- a pool house to host guests, patio space, pergola, etc. He also was very knowledgeable of the Southampton Village building codes, which facilitated approvals. We are very happy with the result and look forward to enjoying the space for years to come.
Amy Adler
Aug 02, 2020 Report
Working with architect Zachary Clanahan exceeded my expectations not only in professionalism, accessibility and competitive pricing, but also in creating an outstanding design beyond my dreams. If you want to work with an architect with exceptional skill, who listens to your needs, who makes recommendations when you may not know exactly what you want, who is honest and responsible, and who takes great pride in his work, hire architect Zachary Clanahan!
Ragan Ingram
May 31, 2020 Report
Positive:Professionalism,Quality,Responsiveness,Value
Zac and his team have been professional and extremely helpful with our project. We trusted them completely and were very satisfied. We highly recommend them!
Dustin Hetrick
Sep 17, 2018 Report
Working with ZTC was a wonderful experience. Very professional they they deliver nothing by the highest quality work!