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Extensions
Rear, side-return and wraparound extensions that open your ground floor up to the garden.
Design & build · Hayes & across London
More space. Built properly.
Extensions, loft conversions, renovations and new builds from Top K Construction and Design Ltd, a Hayes-based design-and-build company.
ExtensionsLoft conversionsRenovationsNew buildsCompanies House no. 13340711
What we build
One team from first sketch to final snag.
Design and construction under one roof, so there's one point of contact and one company responsible for the work.
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Loft conversions
Dormer and Velux conversions that turn unused roof space into bedrooms, bathrooms or an office.
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Renovations
Kitchens, bathrooms and full refurbishments, including structural changes.
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New builds
Ground-up homes and garages, managed from groundworks to handover.
How we work
A clear process, no surprises.
Every project follows the same four steps, so you always know what happens next.
Send photos
Use the quote form or WhatsApp to send a few photos and a rough idea of what you want.
Site visit
We visit, measure up and talk through layout, budget and what's possible.
Written quote
You get an itemised quote and a programme of works before anything starts.
Build & handover
We build, keep you updated as we go, and hand over a finished, clean space.
Our work
Recent projects.
Concept imagery for this demo. It would be replaced with Top K's own project photos from Instagram, TikTok and YouTube.
A registered UK companyTop K Construction and Design Ltd, Companies House no. 13340711, incorporated April 2021.
Design and build togetherOne company handles the design and the build, from planning drawings to finishing.
Local to HayesBased in Hayes, working on homes across west London and beyond.
Free, no-obligation quote
Tell us about your project.
Add a few photos of the space and we'll get back to you with next steps and a time for a site visit.