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Prefab ExtensionGet a quote

How our service works

Prefab Extension is a small introduction service for homeowners in England, Scotland and Wales. We do not make panels, pour foundations or employ builders. This page explains what we do with a quote request and how we are paid.

What happens to your request

  1. You send a request

    Your postcode, the kind of extension, a rough size, when you hope to build and how the garden is reached. Then a name, phone number and email.

  2. We look for a firm

    We search for a company that makes or builds prefab extensions and takes work in your area. This normally takes one working day.

  3. We tell you who it is

    You get the firm's name from us before it hears anything about you. If you would prefer not to go ahead, say so and that is the end of it.

  4. The firm prices your job

    With your agreement we forward your request. The firm contacts you, sees the house and gives you its price. If you go ahead, you sign with that firm and not with us.

How we earn money

We are paid by the company you are introduced to. Nothing is charged to you, and nothing is added to your price.

Things we do not do

  • Ask you for a deposit or any other payment.
  • Pass your details to a firm you have not agreed to, or to more than one firm at once.
  • Give a fixed price. Only a company that has seen the house can do that.
  • Email you offers or sell your details to advertisers.

We are independent

We have no connection with any manufacturer or builder whose name resembles ours. The design, the factory work, delivery and building are all carried out by the company you choose to appoint.

Where our figures come from

The price ranges we publish are typical national ranges for 2026, including VAT; London and the South East usually cost 20 to 40% more. Fees are set by MHCLG and by each council from 1 April 2026. Planning and building rules are taken from GOV.UK, the Planning Portal and the Scottish Government. Use them to set a budget and to question a quote. They are not a quote, and they are not legal advice.

Contact

Write to support@grubleads.com. The privacy notice explains how to get your details deleted.

Get a quote for your extension

Postcode, four quick questions, then your contact details. It takes about a minute.

We are an introduction service, not a prefab extension builder. We search for a company that takes work near you and give you its name first. Your details stay with us unless you agree to the introduction, and asking is free.

Step 1 of 3

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