Estiquote

Local costs · East of England · September 2026

How much does an extension cost in North Norfolk?

A mid-range 25 m² single-storey extension in North Norfolk costs about £67,500 to £83,500 including VAT, or £2,700 to £3,300 per m² at East of England prices. North Norfolk charges £919 for building control on a 10 to 40 m² extension (full plans, including VAT): 9% above the typical council (£840). With design, a structural engineer, building control and a 15% contingency, budget £83,500 to £108,000.

By Estiquote · Prices reviewed · Council fees from North Norfolk's published schedule · How we calculate

Work out your project in North Norfolk

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Typical prices in North Norfolk

Mid-range finish, East of England prices, including VAT. The budget adds design and engineering fees, North Norfolk's building control charge and a 15% contingency.
ProjectBuilding workBudget to plan for
Single-storey extension, 25 m²£67,500 to £83,500£83,500 to £108,000
Double-storey extension, 40 m²£97,500 to £123,000£119,000 to £156,000
Dormer loft conversion, 30 m²£60,500 to £74,500£75,000 to £95,500
Kitchen, medium£9,300 to £16,600£10,700 to £19,000
Bathroom refit£6,300 to £9,400£7,200 to £10,800

Building prices in East of England run about 7% above the UK average outside London. Kitchens and bathrooms vary less from place to place than extensions and lofts.

Building control fees in North Norfolk

North Norfolk council charges including VAT (plan and inspection combined)
WorkCharge
Extension up to 10 m² (full plans)£919
Extension 10 to 40 m² (full plans)£919
Larger extension, <=100 m² (single band) (full plans)£919
Extension 10 to 40 m² (building notice)£889
Loft conversion up to 40 m²£1,056
Garage conversion£782

North Norfolk charges £919 for building control on a 10 to 40 m² extension (full plans, including VAT): 9% above the typical council (£840). Source: North Norfolk's building control charges, 1 April 2026. Plan + inspection, inc VAT totals.

Private approved inspectors set their own prices and are often competitive, so it is worth asking one or two for a quote as well. See how North Norfolk compares with every council we checked.

Notes on North Norfolk's schedule

Own schedule. Single band for single-storey extensions up to 100 m2.

Planning

If your extension needs planning permission, a householder application in England costs £548. Many single-storey rear extensions are permitted development and need no application, and a lawful development certificate (£274) confirms it.

Other councils in East of England

Building control for a 10 to 40 m² extension:

Questions people ask

How much does an extension cost in North Norfolk?

A mid-range 25 m² single-storey extension in North Norfolk costs about £67,500 to £83,500 including VAT for the building work, or £2,700 to £3,300 per m², based on East of England prices reviewed in September 2026. With fees and a 15% contingency, budget £83,500 to £108,000.

How much is building control in North Norfolk?

North Norfolk charges £919 (including VAT) for a 10 to 40 m² extension (full plans), according to its published schedule (1 April 2026).

How much does a loft conversion cost in North Norfolk?

A mid-range 30 m² dormer loft conversion in North Norfolk costs about £60,500 to £74,500 including VAT for the building work, and about £75,000 to £95,500 with fees and a 15% contingency.

Before you get quotes