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Capturing life's precious moments, one frame at a time.

At Square One Architects, we're a creative practice based in South West London, specializing in bespoke residential architecture. Our team, led by ARB and RIBA Chartered Architect Iacopo Sassi, has a high degree of experience working on high-end residential projects, including extensions and loft conversions. With over 15 years of professional experience in the field, we help clients achieve their dreams, designing rational and beautiful spaces that perfectly fit their needs.

Our Services

We provide a completely bespoke service that covers all stages of the design process from concept to construction. Our award-winning RIBA Chartered Practice is committed to delivering ambitious living spaces that are both functional and sustainable. We're passionate about design and love to work in a bespoke manner with every single client, respecting their specific priorities and goals. We're specialists in lighting design too, and we believe that a focus on bringing in optimum natural light can completely transform a home.

Why Choose Us

We're extremely confident in our relationship with Local Authorities, having liaised with and submitting over one hundred applications since 2015. Our project's record demonstrates our ability to consistently deliver successful designs throughout the South West of London for all types of residential projects, including alterations, extensions to the rear and side, as well as loft extensions. We've been featured in several publications, including Real Homes, Don't Move, Improve, Houzz, and RIBA publications.

Our Expertise

Our studio office is based in Hampton, and we work throughout Greater London and surrounding areas, with a special focus on South-West London, including the Boroughs of Richmond upon Thames, Kingston, Ham, Elmbridge, Merton, Runnymede, Ewell, Brent, Wandsworth, and Southwark. We've worked on various projects in Hampton, Hampton Hill, Teddington, Strawberry Hill, Twiceknham, St. Margaret's Kingston, Barnes, East Sheen, Esher, Cobham, Wimbledon, and Raynes Park.

What Our Clients Say

Don't just take our word for it! Our clients have praised our professional approach, attention to detail, and ability to deliver successful designs. We've received excellent reviews and testimonials from our satisfied clients, who appreciate our patience, thoughtfulness, and responsiveness to their needs.

Reviews (29)
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Positive: Excellent professionalism, attention to detail, and creative solutions have earned Square One Architects a spotless reputation.

Overview of Square One Architects

Professionalism and Expertise

The reviews highlight the exceptional professionalism and expertise of Iacopo and his team at Square One Architects. Clients praise Iacopo's attention to detail, creative solutions, and ability to listen to their ideas and incorporate them into the design.

Design and Planning

Reviewers consistently mention the high-quality drawings and designs provided by Square One, which have helped clients achieve their desired outcomes. The architects' ability to navigate the planning process and obtain necessary permissions is also highly praised.

Communication and Support

Clients appreciate the excellent communication and support provided by Square One throughout the project. Iacopo is commended for being responsive, helpful, and diligent, making the building process easier to navigate.

Recommendations and Testimonials

All reviewers highly recommend Square One Architects, citing their positive experiences and the excellent results achieved. Many clients appreciate the architects' connections in the local area, which have helped them find reliable builders and suppliers.

Standout Qualities

The reviews emphasize Iacopo's exceptional attention to detail, creative problem-solving, and ability to understand clients' needs. His expertise in designing innovative solutions that blend seamlessly with existing structures is particularly noteworthy.