Modern rear house extension with bi-fold doors opening onto the garden
Family-run since 1994

Expert House Extension Builders in London

Upgrade your home through tasteful house extensions in London. Easy Developments is a bespoke house extension company helping you create more space without the stress.

£5m insured Free survey In-house team Rated 4.9
House extensions

Your Reliable Choice of Builders for Extensions

At Easy Developments, we ensure your visions for your home come to life through our bespoke house extension services. From initial feasibility and planning assessment to construction and ongoing support, we take care of your space from start to finish.

We have been extending homes across Bromley, Croydon, Kent and Surrey since 1994. From kitchen extensions to wrap around extensions, our own bricklayers, carpenters and plumbers work on every project rather than relying on a rotating cast of subcontractors.

  • Rear & side-return extensions
  • Wrap-around & double-storey
  • Structural steelwork & foundations
  • Planning & building regs handled
See our extension projects
Finished rear extension kitchen-diner with bi-fold doors
750+Projects completed
10 yrWorkmanship guarantee
Which extension

Options for Your London House Extensions

Before committing, explore your extension options for further clarity on what fits and complements the shape of your house best.

Existing houseNew extension

Single storey extensions

Add valuable living space with a practical single storey extension designed around your home.

Planning
Often permitted development
Best for
Terraces, semis & detached

Not sure which one fits your plot?

We work it out on the free survey.

Book a free site survey
Our process

From Initial Planning to Handover

A clear process keeps your single storey house extension and all other extensions moving smoothly. Here's what to expect at each stage:

  1. Day One

    Initial Consultation

    We visit your property to discuss your plans, assess the plot and boundaries, and understand your budget.

  2. Week 1

    Property Survey

    We take accurate measurements, check access and boundaries, and use our findings to prepare your fixed project price.

  3. Weeks 1 to 4

    Design & Structural Plans

    Detailed drawings and structural designs are prepared for your approval before the project moves forward.

  4. Weeks 4 to 14

    Planning & Building Regulations

    We take care of planning applications, building control requirements and party wall notices where needed.

  5. 8 to 12 Weeks on Site

    Building Your Extension

    Our in-house trades handle everything from foundations and steelwork to brickwork, plumbing and first & second fix.

  6. Final Stage

    Handover & Guarantee

    We inspect the finished work with you, complete any final snagging and provide your completion certificate and guarantee.

Scroll

Four to six months survey to handover, about 8–12 weeks on site.

Start with stage one
Why Easy Developments

What Makes Us Your Ideal Choice

Experienced team

Our own skilled tradespeople handle your project, ensuring consistency from the first day through to completion.

Family-run since 1994

Fully Insured Projects

Your project is fully insured, protecting your property, along with our team and everyone working on site.

£5m public liability

Transparent pricing

You receive a detailed written quote, with all changes clearly priced and agreed before work begins.

Fixed written quote

Quality Material Usage

We specify quality products for your project and never substitute materials without discussing it with you first.

Named on the spec

Reliable Project Timelines

You receive a clear programme before work starts, with any delays communicated promptly rather than left unexplained.

Programme issued up front

Dedicated Customer Support

You have one point of contact throughout, with our team remaining available even after your project is handed over.

10-year guarantee + aftercare
Accredited by
TrustMark FMB Checkatrade Which? Trusted Trader NICEIC Gas Safe RIBA ARB
Real work, not stock photos

See the before and after.

Drag the handle
BEFORE AFTER
Extension

Project title

Location

    Client stories

    What homeowners said after.

    Our rear extension transformed how we use the house. The kitchen-diner is exactly what we pictured, and the team kept us in the loop the whole way through.
    TP The Patel Family Rear extension · Croydon
    From the first site visit to the final coat of paint, everything was straightforward. The steelwork and glazing went in exactly on programme.
    MR Michael R. Double-storey extension · Bromley
    1 / 2
    4.9

    Averaged across hundreds of reviews.

    Where we work

    Dedicated Customer Support

    If you need a double storey house extension, or any other type of extension, our expert services are available across these locations:

    Based at 7 Crossways Rd, Beckenham BR3 3JP, United Kingdom
    Call 07984 548858 Survey Free in every area
    Let's get started

    Work With the Leading House Extension Builders in London

    Get a free survey with our experts for honest advice, with no obligation. Prioritise quality when extending your house and work with Easy Developments.

    Free survey No obligation 10-year guarantee or ring 07984 548858
    Questions

    Frequently Asked Questions (FAQs)

    We build a range of house extensions, including single storey, double storey, rear, wrap around, kitchen and side extensions. We can also convert garages to create additional living space.

    Yes. We can manage the planning and building regulations process as part of your project. This includes planning applications, building control requirements and party wall notices where needed.

    The construction period depends on the size and complexity of your extension. Once the plans are agreed, we provide a clear programme so you know what to expect at each stage.

    Absolutely. We assess your property, available space, access, boundaries and plans during the initial consultation, helping you understand which extension option best suits your home.

    The cost varies according to the size, design, materials and structural requirements of your project. We provide a detailed written quote following your property survey, with any changes clearly priced and agreed beforehand.

    Yes. Once your extension is complete, we carry out final snagging with you before providing your completion certificate and guarantee for added peace of mind.

    Get your free quote.

    Tell us a little about your project and we’ll be in touch to arrange your free site survey.