Bonham & Bonham provides architectural expertise for prime and super-prime residences, working with private clients who value originality, precision, and seamless delivery.

Our portfolio spans new builds and complex refurbishments across a variety of architectural styles. Every stage is managed in-house—from concept and spatial planning to technical detailing and planning consultancy—ensuring clarity, efficiency, and creative integrity throughout.

Our services include:

• Architectural concept design
• Design development
• Planning approval & specialist consultancy
• Technical design & architectural detailing

With architecture, interiors, and technical design integrated from the outset, we act as a single point of contact—delivering cohesive, high-performance solutions tailored to your vision.

We take a design-led approach, with our interior designers leading each project from concept to completion. Every detail is meticulously considered, with the design process tailored to reflect each client’s individual vision and lifestyle.

From spatial planning and bespoke furniture to finishes and feature lighting, we ensure every element is crafted with precision. Early concepts are brought to life through illustrations, CGIs, and material samples, evolving through close collaboration with our clients.

Our designers work seamlessly with in-house technical and construction teams to ensure flawless execution. With a direct relationship and regular on-site presence, your lead designer ensures every detail is delivered to the highest standard.

Our in-house construction expertise covers all aspects of building and fit-out for prime and super-prime residential properties. We understand the complexities of high-value homes and deliver spaces that are both technically precise and aesthetically exceptional.

Our services include:

• General building and demolition
• Landscaping and groundworks
• First and second fix MEP (mechanical, electrical, plumbing)
• General carpentry and bespoke joinery manufacturing
• Gypsum, decoration, stone, and tile works
• Climate control and HVAC
• Specialist systems: solar, pools, spas, home automation, and AV

By integrating construction knowledge from the earliest design stages, we identify and mitigate risks early, ensuring smooth delivery, superior craftsmanship, and unwavering quality throughout.

We design and manufacture high-quality bespoke joinery, tailored to meet the exacting standards and individual requirements of each project.

Based in the Cotswolds, our workshop is home to a team of skilled craftsmen who produce custom pieces ranging from kitchen cabinetry and bathroom vanities to studies and drawing rooms—each designed to enhance the functionality and character of a space. 

Using sustainably sourced materials, combined with precision engineering and traditional joinery techniques, we create work that is both durable and refined. Details such as integrated metalwork, specialist finishes, and custom detailing ensure each piece is built to perform and made to last.

Our joinery is fully integrated into the wider design and construction process, supporting a seamless delivery from concept to completion.

Our skilled craftsmen work in close collaboration with our design and manufacturing teams to deliver flawless installations that meet the highest standards of quality and precision.

With expertise spanning bespoke joinery, timber and metalwork, paneling, natural stone, and specialist decorative finishes, our team understands that the success of any interior lies in its execution, down to the finest detail.

Working with private clients globally, our fit-out specialists bring our designs to life with consistency and care. Their early involvement in each project ensures a seamless integration between design intent and final delivery, supported by the full capabilities of our vertically integrated studio.

An essential element of every refined interior, our soft furnishings, including sofas, lounge chairs, ottomans, and bar stools, are handmade to order in our English workshop.

Clients may choose from our curated collection or commission fully bespoke pieces, with each design tailored to complement the wider interior scheme and meet the highest standards of comfort and quality.

Every piece begins with detailed design development, where proportions, seat depth, and comfort preferences are defined. Frames are constructed from solid timber, fitted with traditional webbing or springs, and layered with fillings such as high-density foam, fibre quilt, or feather, depending on the desired feel.

The final upholstery is completed with fire-treated fabrics and any decorative details before being carefully wrapped and delivered, ready for installation.

As part of our fully integrated offering, we provide original landscape design and implementation for luxury homes—ensuring a cohesive vision across architecture, interiors, and outdoor environments.

Led by our award-winning landscape designer, the gardens team collaborates closely with project architects and interior designers to deliver harmonious, site-specific solutions that elevate the overall experience of each property.

With longstanding relationships across Europe’s finest nurseries, we regularly source a wide variety of plant species and mature trees—from 65-year-old olive trees from Tuscany’s Pistoia Valley to young fruit trees from trusted partners in the Netherlands. Our logistics expertise and horticultural knowledge enable us to deliver landscapes of exceptional quality, tailored to the most discerning standards.