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Thoughtful residential design in the Thames Valley & beyond

Welcome

Gareth Cotter Architecture is a RIBA Chartered residential architecture studio in Maidenhead, designing extensions, renovations and new homes across Berkshire, the Thames Valley and the South East — from first ideas through to planning and construction

The studio draws on experience across residential and mixed-use projects in the Thames Valley and London, guiding schemes from early feasibility and concept design through planning and detailed technical delivery. We work closely with homeowners, consultants and contractors to develop thoughtful, well-considered architecture.

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Our Work

St Mark's Road

A thoughtful contemporary extension and reconfiguration of a characterful Victorian home, introducing new living spaces, an open kitchen, a loft conversion, and carefully designed landscaping, all unified by an intricate new brick façade.

Maidenhead Townhouse

A three-storey townhouse extended and reconfigured to create light-filled open living spaces and a new kitchen, complemented by minimalist yet naturalistic landscaping and a series of interior and exterior green walls.

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Fetty Place

A two-storey semi-detached home extended to the rear with a modernist-inspired addition. The interior has been fully reconfigured to accommodate a growing family, creating open-plan living spaces and a new garden office.

Trecarrell, Portwrinkle

Cornish family home set into a sloping landscape, featuring a natural local stone façade at ground level with a timber and render upper storey. An expansive glass-fronted balcony opens toward panoramic views across the English Channel. 

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Our Approach

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Do you want to discuss your ideas & project with us?

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© 2026 Gareth Cotter

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