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Monday 9am - 6pm Tuesday 9am - 6pm Wednesday 9am - 6pm Thursday 9am - 6pm Friday 9am - 6pm

Sepia.design

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🏘️Chartered Architectural Technologists
☎️Contact Us Today - 020 8831 9629

Chartered Architectural Technologists, Planning Applications, Architecture Design & Building Plans covering West London, Berkshire, Surrey And The M25 Corridor.

23/10/2026

Sepia Design developed an existing property where the rear garden was detached from the main house and was only accessible by external steps. We managed the project from inception to completion incorporating a new rear and side extension with a lowered ground floor level, so the house flowed spatially.

10/09/2026

Shortlisted for the Architect's Journal Refurb Project award 2026, this Cambridge upgrade is a study in considered - https://mailchi.mp/passivehouseplus/college-material

08/09/2026

Contemporary.

Demolish existing building on sloping site and design new building. Replacement designed by us and obtained planning permission easily. All working drawings and tenders obtained with project commencing a few months ago. We are providing the full service from inception to completion.

To take a closer look, visit the link in our bio.

03/09/2026

01/09/2026

Extensions & Conversions

A property in Egham, converted into a six-bedroom house. The project combined internal work to the client's spec with a side extension and loft conversion, adding a master bedroom with en-suite in the new loft space.

01/09/2026

Extensions & Conversions🏠

A full refurbishment with a three-storey side extension, a rear extension, and a lowered lower ground floor. Before and after photos are on our website, link in bio.

01/09/2026

Sepia Design — Chartered Architectural Technologists

Run by a Chartered Architectural Technologist, member of both CIAT and CIOB, with years of hands-on experience across residential design and planning.

We handle everything personally, site visits, meetings, calls, whatever works for you. Fast turnarounds, deadlines met, and advice you can actually trust because it's independent, not tied to pushing extra work.

Competitively priced. No jargon, no chasing us for updates. Just honest, reliable guidance from first call to final drawing.

Address

20 St Dunstans Road
Feltham
TW134JU

Opening Hours

Monday	9am - 6pm
Tuesday	9am - 6pm
Wednesday	9am - 6pm
Thursday	9am - 6pm
Friday	9am - 6pm

Website

https://sepiadesign.co.uk/

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