Hogs Back Builders

Our Services

House Extensions Surrey & Hampshire

Expert design and build extensions that add space, value and natural light to your home, all managed under one roof.

House Extensions in Surrey & Hampshire

Create More Space Without the Cost and Stress of Moving

With house prices, stamp duty and removal costs all at significant levels, a thoughtfully designed house extension is often the most practical and cost-effective way to give your family the space it needs.

At Hogs Back Builders, we have completed more than 200 industry-regulated extensions for private homeowners, landlords and property developers across Surrey and Hampshire since 2008.

We manage the entire project from start to finish, including architectural drawings, planning permission applications, structural engineering, all trades and the final independent Building Regulations sign-off.

You deal with one company, one project manager and one fixed price throughout.

Two Story Side Extension

What we do

Types of House Extension We Build

Every property is different, and so is every extension. We will help you identify the best option for your home, your budget and your goals.

  • Side Extensions

    Make use of the space alongside your house, ideal for kitchens, utility rooms and extra reception rooms.

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  • Rear Extensions

    Extend into your garden for a light-filled kitchen-diner, family room or home office.

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  • Kitchen Extensions

    The UK's most popular extension type, creating the open-plan space every home deserves.

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  • Two-Storey Extensions

    Maximise the return on your investment by extending across two floors at once.

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  • Garage Conversions

    Transform an underused garage into comfortable, habitable living space.

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  • Over-Structure Extensions

    Build above an existing single-storey structure, using footings already in place.

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  • Basement & Cellar Conversions

    Unlock valuable hidden space beneath your home.

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  • Structural Alterations

    Open up your existing layout with structural steelwork and wall removals.

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  • Garden Rooms & Outbuildings

    Insulated, year-round garden rooms for home offices, gyms, studios.

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Planning Permission

  • Do I Need Planning Permission?

    Many single-storey extensions can be built under Permitted Development rights without a formal planning application, saving time and money. However, PD has specific size limits and does not apply in Conservation Areas or to listed buildings. Our experienced team will always assess your individual situation and advise on the correct route before any costs are incurred.

  • How Much Does a House Extension Cost?

    Extension costs in Surrey vary based on size, specification and ground conditions. As a general guide, single-storey extensions typically start from around £1,800 to £2,500 per square metre, including labour and materials. We always provide a detailed, fixed-price written quotation with no hidden extras.

Where we work

Across Surrey & Hampshire

Hogs Back Builders is based near Farnham on the Surrey/Hampshire border and operates throughout a wide area of both counties. Over nearly two decades of trading, we have built an extensive network of completed projects and satisfied clients from Woking in the north-east to Petersfield in the south, and from Guildford in the east to Andover in the west.

We take on projects of all sizes across our service area and aim to be the local building company of choice in every community we serve. The main towns and areas we cover are listed below.

Areas we cover

Want to Talk to Us About Your Project?

We'd love to hear about your plans. Call us on 01483 662408 or 07957 861230 for a free, no-obligation quote and a free site visit, or use the enquiry form on our Contact page.

Speak to us today 01483 662408 07957 861230