S SIZE GROUPLondon · Est. Mayfair Enquire
Interior of a finely crafted London residence delivered by Size Group, with bespoke cabinetry, herringbone flooring and meticulous decoration.

Some of the
very finest homes
in the world.

Currently accepting commissions for 2025
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" We always wanted to be a company that was different — both in what we do, and in how we do it. Today, our in-house teams deliver the most complex basements, the finest cabinetry, furniture and floors, and a property care service that makes the whole process enjoyable.
Our Position

Size Group was founded on a simple conviction: that the people who build a home should be the same people who care for it. So we gathered them — under one roof, in the heart of Mayfair.

From a triple-storey basement in Belgravia to a parquet floor laid by hand in Hampstead, every commission passes through the same hands, the same workshop, the same standard.

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The Size Group
Founders, London

Three disciplines,
one standard.

Size Group operates as three closely connected practices — construction, specialist crafts, and property care. Each is staffed by its own specialists. All answer to the same expectation of finish.

01 — Construction

Built with
intentLondon homes & beyond

Our construction teams work in close partnership with clients and their designers to deliver some of the very finest homes in the world — from complex basements to delicate heritage structures.

  • London Homes
  • Country Houses
  • Subterranean Structures
  • Special Projects
02 — Specialist Crafts

Made by
handBy our artisan workshops

Talented artisan craftspeople provide the highest quality specialist crafts for luxury homes — cabinetmaking, flooring, fine furniture, decoration and bespoke finishes, all in-house.

  • Cabinetry & Joinery
  • Handcrafted Flooring
  • Fine Furniture
  • Master Decoration
03 — Maintenance

Cared for
alwaysProperty Care & Estate Management

Our Property Care and Estate Management teams provide discreet property management, planned and reactive maintenance to private clients with luxury residences in London and the country.

  • Planned Maintenance
  • Reactive Care
  • Estate Management
  • Private Client Service

The studios
under our roof.

Our specialist crafts are delivered by named workshops — each a maker of distinction in their own right, brought together as part of Size Group so that the standard of finish never leaves our sight.

3.
Connected Practices
Construction · Crafts · Care
04th
Maddox House, W1S
Our Mayfair studio
100%
In-House Specialists
From basement to finish
24/7
Property Care Response
Planned & reactive

A selection
of recent work.

A glimpse of the residences, structures and finishes our teams have delivered for private clients across London and the country. Most will never be published.

London Home Triple-height entrance hall of a private Mayfair residence, finished in hand-laid stone and oak by Size Group.
Project № 01

A triple-basement in Belgravia.

Three storeys below a Grade-Listed terrace, excavated and finished without the building above shifting a millimetre. Pool, wine cellar, private cinema, and a pavilion of book-matched walnut.

DisciplineConstruction
LocationBelgravia, SW1
Duration26 months
Country House Hand-finished interior of a country house restored by Size Group, with bespoke cabinetry and lime-plastered walls.
Project № 02

A country house re-imagined.

A restrained restoration of a Queen Anne residence in the Home Counties — every door, every floorboard, every length of cornice considered by our own workshops before a single tool was lifted on site.

DisciplineCrafts & Build
LocationHome Counties
Duration19 months
Special Project Detail of a hand-crafted bronze and walnut staircase produced in the Size Group workshops.
Project № 03

A staircase, in bronze and walnut.

A single architectural commission — a floating staircase in bronze and book-matched walnut — designed in collaboration with our client's architect and built entirely within our own studios.

DisciplineSpecialist Crafts
StudioSmith & Brown
Duration11 months

How a Size Group
commission unfolds.

Five deliberate stages — designed to make even the most complex build feel considered, calm, and at times, genuinely enjoyable.

i.

Stage OneConversation

A first meeting at Maddox House — or in your home. We listen for the brief behind the brief: how you live, what you love, what you'd rather never think about again.

i
ii.

Stage TwoComposition

With your architect and designer, we compose the build — engineering, sequencing, and the workshop commissions that will define the finished rooms.

ii
iii.

Stage ThreeConstruction

Our construction teams take the project to wind-and-weathertight, handling complex basements, structures and heritage fabric with the same exacting hand.

iii
iv.

Stage FourCrafting

Cabinetry, flooring, furniture, decoration and finishes — produced in our own studios and installed by the same hands that made them.

iv
v.

Stage FiveCare

Handover is not goodbye. Our Property Care team takes on the residence — planned maintenance, reactive response, estate management — for as long as you'd have us.

v
A home should be built once, and cared for by the same hands forever.
— The Size Group Promise Maddox House · London W1S
Begin a Conversation

Tell us about
the home you have in mind.

We take on a deliberately small number of commissions each year. If you're considering a new build, a restoration, a single crafted element, or ongoing care for a residence — we'd be glad to talk.

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New Enquiries
By introduction · Strictly private

Size Group — London Studio

Telephone +44 20 7036 9650
Studio 4th Floor
Maddox House
Address 1 Maddox St
London W1S 2PZ
Hours By appointment
Mon–Fri, 09:00–18:00
Call the Studio