CengelHolding
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A row of London brick terraces at sunset, with the City skyline in the distance

Turnkey renovation in London and Manchester, under one contract.

You see the housebefore we build it.

Book a free survey The story
A Georgian brick terrace with two dark front doors, white sash windows and black railings

The story

From the shell to the home.

Twenty seconds on what happens between the first survey and the keys.

Scroll

01 / 06, The house

It starts with what is there.

A Georgian terrace, two doors and a sash window: we read the house before we touch it.

The brick facade of a Georgian terrace with a white sash window between two front doors

02 / 06, The survey

Every wall, measured.

A laser survey of the stripped shell, joists and openings included, so the drawing matches the room.

A stripped room with bare brick walls and exposed ceiling joists, sunlight through the window and a green laser line across the wall

03 / 06, The design

The project, drawn in the room.

Cabinets, doors and cornices appear on the brick before a single trade arrives. You approve this, not a sketch.

Golden wireframe lines of cabinets, a door and cornices drawn over the bare brick walls of the room

04 / 06, The build

Floors, walls, ceilings.

Herringbone oak, panelled walls and a closed ceiling, in the order the trades need.

The same room with white panelled walls, a herringbone oak floor and the ceiling half closed

05 / 06, Kitchen and stone

The island turns to marble.

Joinery, stone and lighting fitted by the people who drew them.

A marble kitchen island with three pendant lights in a white panelled room

06 / 06, The home

Then it is a home.

Sofa, table, plant, keys. What you approved in week three, standing in the room in week sixteen.

The finished room: a marble island, a grey sofa, a dining table with chairs and a plant by the window
01

The drawing and the site are usually two companies. Here they are one.

What we do

Four services, one contract.

Design and build under one roof: the people who draw the room are the people who build it.

Golden wireframe of cabinets drawn over a bare brick wall
01

Design and 3D

Measured survey, layouts, a 3D model and the drawings the site builds from. Planning included.

  • Survey
  • 3D model
  • Planning
The service
A freshly plastered room with white panelled walls and a herringbone floor
02

Full renovation

Strip-out to handover for a flat or a house. One site manager, one fixed price, weekly reports.

  • Structure
  • Services
  • Finishes
The service
A converted attic with skylights, a brick pillar and a wooden floor
03

Extensions and lofts

Rear, side-return, loft and basement. Permitted development checked first, party walls handled.

  • Rear
  • Side return
  • Loft
The service
A kitchen with a marble island and wooden cabinetry
04

Kitchens and bathrooms

Bespoke joinery, stone, brassware and tiling, drawn in the model and fitted by our own trades.

  • Joinery
  • Stone
  • Brassware
The service

Why design and build

The usual way, and ours.

An architect draws, a builder prices, a third party fits the kitchen. Three contracts, three diaries, and the gaps between them are where the money goes.

Three suppliers

  • Drawings priced after they are finished, then redrawn to fit the budget.
  • Site questions wait for the architect. The architect waits for site.
  • Kitchen, joinery and stone ordered separately and delivered in different weeks.

With Cengel

  • One survey, one 3D model, one fixed price before anything is demolished.
  • The site manager sat in the design meetings. He knows why the wall moved.
  • Kitchen, joinery and stone drawn in the model and ordered on one sheet.
How we work

Virtual experience

The same room, in three states.

Drag the two curtains. Shell, design and home are the same camera at three moments of the film.

A stripped room with bare brick walls, exposed joists and sunlight on the floorGolden wireframe lines of cabinets and doors drawn over the bare brick wallsThe finished room with a marble island, a sofa, a dining table and a plant Home Design Shell
A stripped room with bare brick walls, exposed joists and sunlight on the floor
Shell
Golden wireframe lines of cabinets and doors drawn over the bare brick walls
Design
The finished room with a marble island, a sofa, a dining table and a plant
Home
  1. ShellThe stripped house, surveyed.
  2. DesignThe 3D model, drawn in the room.
  3. HomeBuilt, fitted, furnished.

The three images are stills from our film, which is a reconstruction. The photograph of your room becomes a visualisation like this. See below.

Send us your room

A photo of your room, a 3D view of the result.

Upload one or two photos and say what the room is for. Within five working days you receive a visualisation and a first price band.

  • Any room, any phone photo
  • A visualisation in five working days
  • No obligation, and no site visit needed yet
What are you planning
Drop one or two photos here, or tap to choose

We reply within one working day. A first answer needs no site visit.

Request received.

We will write or call within one working day. If you sent photos, the visualisation follows within five working days.

London and Manchester

Georgian, Victorian, Edwardian, and the 1960s block.

Most of what we touch is over a hundred years old. Each period has its own rules and its own tricks.

Period terraces

Sash windows, cornices, lime plaster and party walls. We keep what is worth keeping and hide what is not.

Listed buildings and conservation areas

Applications written together with the drawings, not after. We know which borough wants what.

Flats and leasehold

Licence to alter, freeholder consent and lift bookings arranged before the first skip arrives.

New extensions

Rear, side-return and loft: under permitted development where it applies, with full plans where it does not.

LondonManchester
A Georgian brick facade with a white sash window and a dark green front doorFrom our film

The group

Swiss since 2009, in Britain from 2026.

Three companies in Switzerland, a fourth opening in London. Same people, same method, same warranty.

Projects completed by the group
180+
People across Switzerland and the UK
24
Structural warranty on our work
10 yrs
Weeks for a typical whole-flat renovation
16

Group figures. The London company opens in October 2026.

What clients say

In their words.

  • We approved the kitchen on a tablet in March and stood in it in July. Nothing was a surprise, including the price.

    J. M.Zurich, whole-house refurbishment

  • The site manager had been in every design meeting. When the roof threw up a problem he already knew what we wanted.

    A. K.Zug, loft and roof

  • Weekly photos, one invoice a month, and the stone arrived the week it was drawn to arrive.

    S. B.Winterthur, two bathrooms

Example testimonials from the Swiss group, to be replaced with named client reviews before launch.

Start here

Book a free survey in London or Manchester.

Forty minutes at the property. You leave with a first price band and a date for the drawings.

Book a surveySend a photo instead
+44 20 3488 0175