Common Questions Answered

Many house extensions, particularly single-storey rear extensions, can be built under Permitted Development rights without a formal planning application. However, Permitted Development has specific size limits and does not apply in Conservation Areas, to listed buildings, or if your permitted development rights have previously been removed by a planning condition. Get in contact to speak with one of our trusted design and architectural partners

A straightforward Velux or dormer loft conversion typically takes between 8 and 12 weeks from start to completion. More complex conversions, such as a mansard or hip-to-gable, may take 12–16 weeks. We always provide a detailed programme at the quotation stage.

Extension costs vary significantly depending on size, specification and ground conditions. As a general guide, single-storey extensions in Surrey typically range from £2,800 to £5,000+ per square metre including all labour and materials. We always provide a detailed, fixed-price written quotation before any work begins.

Planning permission is granted by the local council and relates to the appearance and impact of your project on the surrounding area. Building Regulations relate to the structural integrity, safety, energy efficiency and health standards of the construction itself. Many projects require both, though some extensions can proceed under Permitted Development while still needing Building Regulations sign-off. Get in contact to speak with one of our trusted design and architectural partners.

Yes. Hogs Back Builders carries comprehensive public liability, employer's liability and a contractors all risk insurance policy, protecting your home. Our director Ben Evans is a Gas Safe registered plumbing and heating engineer with over 30 years' experience. Paul Munday is a fully qualified carpenter and joiner with over 30 years experience, all our sub contractors hold qualifications and many years experience in there chosen trade. All our construction work is carried out in full compliance with current Building Regulations, with independent sign-off from building control.

We provide a fully costed budget for your project from the drawings and information provided. We can also advise on budget costs for items that can't be fully realized at the tender stage with contingency's built in. A domestic extension and renovation project can be a fairly organic and fluid process and keeping track of the budget is key to delivering a quality product at the end. Hogs Back Builders has many years experience guiding and helping clients to realize there project within a certain budget and design brief.

Simply call us on 01483 662408 or 07957 861230, or complete the enquiry form on our Contact page. We will arrange a convenient time to visit your property, discuss your requirements and provide a free, no-obligation quotation.

Yes. We work closely with experienced local architects, structural engineers and design professionals who can manage the entire process from initial concept through to planning application submission and Building Regulations approval. Get in contact to speak with one of our trusted architectural and design partners.

In most cases, yes. The majority of our extension and loft conversion projects are carried out while our clients remain living in the property. We take great care to minimise disruption, maintain site cleanliness, and keep you informed of any periods when access to specific areas of the house will be restricted.

We cover Surrey and Hampshire including Farnham, Guildford, Aldershot, Farnborough, Fleet, Camberley, Woking, Godalming, Liphook, Haslemere, Petersfield and surrounding areas. If you are not sure whether we cover your location, please call us directly.

We stand behind the quality of everything we build. All structural work receives sign off from an independent or local authority building control surveyor. We are happy to discuss our workmanship guarantee in detail when we meet you.