Design · Build · Management

Something good is happening here.

Your home, in good hands.

Fixed price On track, on budget Fully managed
A Carreg London project underway in London
On time.
On budget.
The Carreg promise on every project.
15+
Years building across London & the home counties
100%
Projects delivered on time and on budget
4
Signature case studies — authentic Carreg work
£1.3m
Largest single residential project delivered
What we do

One team, from first sketch to final handover

No project is straightforward. We plan for the bumps in the road and keep you informed at every step — honest, transparent and trustworthy.

01 / SERVICE

Design

From first sketch to planning and detailed drawings — we shape spaces that work for how you really live, and guide the approvals along the way.

02 / SERVICE

Build

Skilled, directly-managed trades delivering extensions, loft conversions, basements and new builds to a precise, layered standard of craft.

03 / SERVICE

Management

One point of contact, clear communication and honest updates — delivered on time and on budget, with your home in good hands throughout.

In their words

“Professional & friendly, easy to work with — and the results speak for themselves.”

★★★★★

“Our experience with Carreg London has been 10/10. Mark & his team have been exceptional from the initial quote through to completion. They delivered a full refurbishment, internal reconfiguration, and both loft…”

Tom & Edee, Residential Clients · Worcester Park
★★★★★

“Carreg and Mark were brilliant from start to finish. Professional & friendly, easy to work with and the results speak for themselves. Everything was on time and on budget. We would definitely recommend them.…”

Residential Clients · Queen’s Park
Your home, in good hands

Planning a project? Let’s talk.

Tell us about your home and what you’d like to achieve. We’ll come back with clear, honest advice and a fixed-price quote.