Question 1

How much does a house extension cost in Lincolnshire?

Accepted Answer

As a rough guide, a single-storey extension in Lincolnshire usually works out around £1,800–£2,800 per m² — so roughly £40,000–£70,000 for a typical 20m² build. A two-storey extension often costs a little less per m², because the foundations and roof are shared. VAT at 20% applies to most extension work, and we price every job individually after a free site visit.

Question 2

Do I need planning permission for an extension?

Accepted Answer

Often you won’t. Many single-storey rear extensions fall under Permitted Development (up to 4m for a detached house, 3m for others, within the size limits), so they don’t need full planning permission — though Building Regulations approval is still required. Conservation areas and listed buildings have tighter rules. We sort the drawings, Building Control and any planning application for you.

Question 3

How long does a house extension take to build?

Accepted Answer

On site, a single-storey extension typically takes 8–16 weeks and a two-storey 14–24 weeks. Before we break ground there’s usually design, structural drawings and any approvals to allow for — often another 8–12 weeks. We agree a clear programme up front and keep you posted at every stage.

Question 4

Do you handle the design, drawings and building regulations?

Accepted Answer

Yes. We manage architectural and structural drawings, Building Regulations sign-off and any planning application, so you’ve got one accountable point of contact from first sketch to final handover instead of juggling separate trades and consultants.

Question 5

How much does a loft or garage conversion cost?

Accepted Answer

A dormer loft conversion is usually somewhere around £30,000–£55,000 depending on type and size, while a garage conversion is a more affordable way to add a room, often £8,000–£18,000. Both are quoted individually once we’ve checked head height, structure and what you want from the space.

Question 6

Are you insured, accredited and do you guarantee your work?

Accepted Answer

Yes to all three. We carry full public liability and employer’s liability insurance, hold recognised industry accreditations, and back every project with a 10-year workmanship guarantee. We’re happy to show our paperwork before you commit to anything.

Question 7

What areas of Lincolnshire do you cover?

Accepted Answer

We’re based in Sleaford and work across roughly a 25-mile radius — Lincoln, Grantham, Boston, Spalding, Bourne, Newark and the surrounding villages. If your town isn’t on the list, give us a call anyway; there’s a good chance we can still help.

Question 8

Do you provide free, no-obligation quotes?

Accepted Answer

Always. Every project starts with a free site visit and a proper chat about what you’re after, followed by a clear, itemised written quote with no hidden extras and no pressure to go ahead.

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Advice & insights

How Much Does a House Extension Cost in Lincolnshire? (2026 Guide)

Do You Need Planning Permission for an Extension?

How Long Does a House Extension Take, Start to Finish?

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