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Inside a glazed rear extension to a red-brick Victorian terrace: exposed brick, an oak worktop, a roof light and doors open to the garden
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Extensions

More room and more light, without losing the house you love

Fee
From £5,400
to planning and building regulations
How long
3–5 months to approval

Most of our extensions are for houses people already love and have simply outgrown: a kitchen that turns its back on the garden, a staircase that steals the light, a family room that’s really a corridor.

The best extension is often smaller than the first idea. We look at the whole house before adding to it, and often the answer is a modest addition and a better plan for the rooms you already have.

Period houses and conservation areas

Stone cottages, Victorian terraces and listed buildings need a lighter touch and a careful case to the council. We’ve made that case more than forty times in the Kell valley.

Stages and fees

  1. £650

    Survey

    We measure the whole house and garden, so the drawings fit the building as it is, not as the old plans say.

  2. 35%

    Design options

    Two ways to add the room you need, in plan and 3D, with rough costs, talked through at your kitchen table.

  3. 35%

    Approvals

    Planning or a lawful development certificate, then the building regulations drawings and the engineer's calculations.

  4. 30%

    Tender

    A specification three builders can price like for like, and our advice on the quotes that come back.

Projects where we did this

Questions

Do I need planning permission?

Many single-storey rear extensions are permitted development. We check, and if so apply for a lawful development certificate, so you have it in writing when you sell.

Can you manage the build too?

Yes, for an extra fee: contract administration, site visits and signing off payments. Many extension clients choose to manage the builder themselves with us on call.

Other services

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