Refurbished London detached home with open bi-fold doors, kitchen island and landscaped garden on a bright summer day, designed by Phantom Space

London Home Extensions

Expand your home,
with more space

Every extension starts with one goal: more space. We help London families create it — with rear, side, kitchen and two-storey extensions.

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Trusted by London Homeowners

Accreditations and credentials that give you confidence

RIBA Chartered

Royal Institute of British Architects registered practice

95% Planning Success

Approval rate across all London boroughs

50+ Projects

Completed across London since 2006

Green Design

Committed to the UK's pledge for net zero carbon by 2050

Since 2006

Residential architecture, London

What We Do

Our Specialist
Services

Five distinct ways to create more space. Each one tailored to London homes.

Anatomy of a House

Find More Space
in Every Corner

Tap or hover over each part of the house to see how our extensions create more space, light and value throughout your London home.

ROOFLOFTFIRST FLOORGROUND FLOORFOUNDATIONLOFT CONVERSION
01

Loft Extensions

Turn unused attic space into a bright bedroom, en-suite or home office. Dormer windows and roof lights flood the upper floor with natural light.

02

Side Return Kitchen Extensions

03

Rear Extensions

04

Two Storey Extensions

05

New Builds / Full Redesign

Trusted Across London

We Work With London Boroughs

Navigating planning departments across the capital — our architects have successfully delivered projects through councils spanning every corner of London.

Selected Works

Recent
Projects

Eight residential projects across London — each with full planning drawings, construction details, and gallery photography of the completed spaces.

Bexley Rear Extension — Rear Extensions in Bexley, DA5 by Phantom Space
Rear Extensions2022

Bexley Rear Extension

Bexley, DA5 · 52 m²

Orpington Rear Extension — Rear Extensions in Orpington, BR6 by Phantom Space
Rear Extensions2024

Orpington Rear Extension

Orpington, BR6 · 48 m²

Fulham Side Return — Side Extensions in Fulham, SW6 by Phantom Space
Side Extensions2023

Fulham Side Return

Fulham, SW6 · 22 m²

Bromley Kitchen Extension — Kitchen Extensions in Bromley, BR1 by Phantom Space
Kitchen Extensions2023

Bromley Kitchen Extension

Bromley, BR1 · 38 m²

Chelsea Kitchen Extension — Kitchen Extensions in Chelsea, SW3 by Phantom Space
Kitchen Extensions2023

Chelsea Kitchen Extension

Chelsea, SW3 · 42 m²

Wandsworth Two Storey Extension — Two Storey Extensions in Wandsworth, SW18 by Phantom Space
Two Storey Extensions2023

Wandsworth Two Storey Extension

Wandsworth, SW18 · 68 m²

How We Work

A Clear Path Forward

Follow the route from first conversation to final handover. Hover over each milestone to see what happens at every stage of your project.

PROJECT JOURNEYDRAWING NO. 04 — REV. A030W1START2DESIGN3APPROVE4COMPLETE◂ DAY ONEHANDOVER ▸
01 · Week 1

Initial Consultation

We visit your home to understand your vision, assess the property, and discuss possibilities. This consultation sets the foundation for your project.

02 · Weeks 2–4

Design & Development

03 · Weeks 4–12

Planning & Approvals

04 · Weeks 12–30

Build & Completion

Client Stories

In Their Words

"More Space opened up our cramped Victorian terrace into a light-filled family home. The rear extension they designed exceeded every expectation — our kitchen-diner is now where the whole family gathers."

James & Sarah Whitfield

Islington, N1 · Rear Extension

Get In Touch

Let's Create
More Space

Book your initial consultation. We'll visit your property, discuss how much more space you need, and show you how to unlock it.

Studio

42 Clerkenwell Road, London EC1M 5PS

Hours

Mon – Fri, 9:00 – 18:00

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