What areas do you build extensions in?

We build house extensions across Surrey, within about ten miles of our Godstone office from our base in Godstone (RH9), covering Caterham, Whyteleafe, Warlingham, Oxted, Redhill, Reigate and the surrounding area.

Dark-framed sliding doors in a rendered rear extension, pale slab paving running out to the lawn.

Service sheet 01 — Extensions and Full Renovations

Extensions and Full Renovations

SG Refurb designs and builds house extensions across Surrey — rear, side-return, wraparound, single- and double-storey.

Get an estimate Call 01883 337 700

Every type of extension, handled end to end

Whatever shape your project takes, we cover.

Accountable, start to finish

SG runs your extension from first survey.

Local work, locally proven

We build for homeowners across Godstone, Caterham.

Our work

Extensions

Rear, side-return, wraparound and two-storey. We take it from the drawings and building control through to the finished room — groundworks, structure, roof, openings, then the inside. On an older Surrey house the surprises are underground and in the existing structure, so the survey happens before the price, not after it.

A new oak-framed porch with glazing on a red brick dwarf wall, built onto the corner of a house. — New oak-framed porch

A white rendered single-storey extension with full-width sliding doors on the end of a red brick house, looking back across the lawn. — White rendered single-storey

A vaulted dining room in a rear extension with three narrow roof lights and sliding doors opening onto the garden. — Vaulted dining room

A timber-framed single-storey extension lit at night, with glazed gable above the doors and wall lights along the front. — Timber-framed single-storey extension

New white render on the two-storey extension, meeting the original pebbledash of the house. — New white render

Bare screed underfoot and blue transport tape still on the new garden doors. — Bare screed underfoot

Two roof lights punched into the sloped ceiling, with downlights set in the flat section beyond. — Two roof lights

Rattan seating sits under a black louvred pergola at the far end of the paved garden. — Rattan seating sits

Scaffold wraps a bare blockwork shell two storeys high, no roof on it yet. — Scaffold wraps

Roof tiled and doors hung, the blockwork still bare, insulation boards leaning against the fence. — Roof tiled

One French door standing open onto the paved patio, the cement mixer parked alongside. — One French door

Someone looks out of the new upstairs window; roof tiles and a mixer still sit in the garden. — Someone looks out

Bolted steel beams sit on acrow props where the back wall has been opened up. — Bolted steel beams

Photographs show the kind of work we take on. They are replaced by our own as jobs hand over.

Before you startDo I need planning permission for an extension? →

Before and after

Rear extension: drag to see it change

The back of an ordinary semi, and the same elevation opened up.

A two-storey rear extension under construction on a pebbledash semi, its blockwork shell wrapped in scaffolding.

A white-rendered rear extension with full-height dark sliding doors onto a paved terrace and steps down to a lawn.

Indicative

Both sides are indicative photographs, not an SG job — they show what a before-and-after looks like. They are replaced by the first real pair: one photograph before the work, one of the same spot finished.

Also

The rest of this side

Finished open-plan living area in a refurbished flat, with wide oak boards, a white corner sofa and full-height glazing along one side.

9 photographsRenovations

Stone worktop over a timber-clad island, with two ovens set into the tall run behind.

8 photographsDesign and build

Circular brick window with steel star glazing bars set into a rebuilt red brick elevation, with scaffolding still up alongside.

14 photographsHeritage

How it works

Survey

we visit, measure up and talk through what you actually need.

A price for the job

a price once we have seen it. No vague "competitive rates",

One firm on the build

your project run by SG's own team, with specialists brought in

Handover

finished, signed off and tidied up, with the certificates that matter.

Common questions

Q.01How much does a house extension cost in Surrey?

Extension costs in Surrey vary with size, type (single or two storey), specification and groundworks.

Q.02Do you handle the whole extension yourselves or use subcontractors?

SG's own team handles the building work — roofing, carpentry and joinery, plastering and the fitting of kitchens and bathrooms — and we bring in approved subcontractors we have worked with for years for trades like electrics and plumbing, all managed by us.

Where we do extensions and renovations

Get an estimate

Thinking about extending? Tell us what you have in mind and we will arrange a survey.

Get an estimate Call 01883 337 700