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Home extensions · Design, planning and build
FREE Site visit and measured survey

Add theroom you'remissing.

Rear, side return, wraparound and double storey extensions. Build yours in 3D, get a ballpark in 30 seconds, then send it straight to us on WhatsApp.

  • Drawings, planning and building control handled
  • Fixed, itemised price before a spade goes in
  • No forms. Your price comes back on WhatsApp
Step 1 of 4

What are you adding?

How much space do you want?

24 m²

When do you want to start?

Send it to us on WhatsApp

WhatsApp is open.

Just hit send. We'll reply with your price and a date for your free site visit.

Open WhatsApp again
No obligation. Opens WhatsApp with your details filled in.
0sto see your ballpark
£0for the site visit and survey
0team, one point of contact
0surprise extras on the invoice
Why Hoom

Most extensions go over budget, over time and over your head. We give you one team, one fixed price and a room you can actually picture before a spade goes in.

Watch it grow

Scroll to
build it.

+0m²
  1. 01
    Single storey rear

    The classic kitchen diner. Bifolds, rooflight, garden view.

    +24 m²
  2. 02
    Wraparound

    Wrap round the side return for width and light.

    +36 m²
  3. 03
    Double storey

    Go up as well. Kitchen below, bedroom above.

    +58 m²
Keep scrolling
How it works

Three stepsto morespace.

No chasing an architect, an engineer and three different trades. You deal with us, start to finish.

Keep scrolling
01.

Free site visit

We measure up, talk through what you want and how you'll actually use the space.

02.

Drawings and fixed price

Proper drawings, planning or permitted development sorted, and a fixed itemised price.

03.

We build, you move in

A clear week by week plan, one project lead, and a finished room handed over clean.

Step zero

Start with a
ballpark.

30 seconds. No obligation. See it in 3D first.

Get my ballpark

Extensionswe build.

Tap any one to see it in 3D and get a ballpark straight away.

No forms

Your price.On WhatsApp.

Build your extension above, tap send, and it lands in our WhatsApp with everything we need. We reply with your price and a date for your free survey.

  • Replies from the actual team, not a call centre
  • Send photos of the space straight from your phone
  • Free survey booked right there in the chat
The build

Six stages.One team.

  1. 01
    Survey and drawings

    We measure up, draw the design and sort planning or permitted development.

    WK 0
  2. 02
    Foundations

    Dug, poured and signed off by building control before a brick goes down.

    WK 1
  3. 03
    Walls and steel

    Blockwork up and the steel in, so the back wall can come out.

    WK 3
  4. 04
    Roof and rooflight

    Watertight roof and rooflights fitted. The weather stops mattering.

    WK 5
  5. 05
    Glazing

    Bifolds or sliders in, then first fix electrics and plumbing.

    WK 7
  6. 06
    Finish and handover

    Plaster, floor, kitchen and lights. We walk it through and hand it over.

    WK 10

What's inthe price.

Everything from the drawings to the last light switch, agreed up front.

0
Point of contact

One project lead from survey to handover, who actually answers the phone.

0%
Paperwork handled

Drawings, planning, structural calcs and building control sign off.

0
Surprise extras

Any change is priced and agreed before it happens. No end of job shocks.

0
Clear stages

You know what's happening every week, from the dig to the keys.

Goodquestions.

Do I need planning permission?

Lots of rear and side extensions fall under permitted development, so no full application is needed. We check on the site visit and handle whichever route your house needs.

How accurate is the ballpark?

It's a guide based on size and type. Spec and glazing move it the most. You get a fixed, itemised price after the free site visit, before anything starts.

How long does it take?

A typical single storey rear extension is around ten weeks on site once drawings and approvals are done. You get a stage by stage timeline before we start.

Can we live at home during the build?

Usually yes. The old back wall stays in until the new space is watertight, so most of the mess stays outside.

Why WhatsApp instead of a form?

Because it's quicker for you. Your extension details arrive in one message, you can send photos of the space, and we reply with a survey date in the same chat. No waiting for a call back.

Do you do the kitchen and finishing?

Yes. Plastering, flooring, electrics, plumbing and kitchen fit are all part of the build.

Let's makesome room.

See your extension in 3D, get a ballpark in 30 seconds and send it to us on WhatsApp. We'll do the rest.

WhatsAppGet my price
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