House Extension Cost by Size: 3m x 3m to 6m x 4m Price Guide (Essex 2026) If you’re trying to work out your house extension cost by size, the first thing I need to know is how big the extension is. After that, I’ll ask a few more questions, such as whether you’re having a […]

House Extension Cost Per m2 in Essex: What You Actually Pay in 2026 If you’re planning an extension this year, the house extension cost per m2 in Essex is the most useful place to start your budgeting. For a standard single storey shell extension, our approved builders are currently pricing from around £2,250 per square

A design and build company is a single business that handles the design, planning permission, and construction of a home improvement project.

Design and Build Extensions in Brentwood, Chelmsford & Across Essex — Town-by-Town Guide Kirkwood provides design and build extensions and loft conversions across Essex — covering Brentwood, Chelmsford, Billericay, Basildon, Wickford, Rayleigh, Leigh-on-Sea, Southend-on-Sea, and Hornchurch. Each of these towns has its own council, its own common house types, and its own local planning quirks.

Will a House Extension Add Value to My Property? (Essex Guide 2026) In most cases, yes, but how much depends heavily on the type. A single-storey rear extension typically recovers 50 to 70 per cent of its build cost in added value on its own; it rarely pays for itself in full, but it does

Does a Garage Conversion Add Value to a Property? (Essex Guide 2026) Yes, a garage conversion typically adds between 5 and 10 per cent to the value of a property, making it one of the most cost-effective home improvements available. In Essex, a converted garage costs £15,000 to £35,000 and can add £20,000 to £40,000

Is a Loft Conversion a Profitable Investment? (Essex 2026 Guide) A loft conversion is one of the most financially efficient home improvements you can make in Essex. It adds usable floor space, typically 20 to 40 square metres, without touching the garden or changing the footprint of the house. In most cases, a loft conversion

Do I Need Planning Permission for a House Extension in Chelmsford? Most house extensions in Chelmsford do not need planning permission. They qualify as permitted development, a set of rules that allow homeowners to extend without a planning application, as long as the work stays within certain limits. A standard single-storey rear extension, a loft

How Much Does a Dormer Loft Conversion Cost? (2026 Essex Prices) A dormer loft conversion in Essex costs between £45,000 and £75,000 in 2026. A rear dormer on a standard semi-detached home typically falls between £50,000 and £65,000, including design, structural engineering, and the full build. The final price depends on the size of the

How Much Does a Loft Conversion Cost in Essex? (2026 Town-by-Town Guide) A loft conversion in Essex costs between £25,000 and £105,000 in 2026, depending on the type of conversion and where you live. A Velux conversion starts from around £25,000. A rear dormer, the most popular choice across Essex, typically costs £45,000–£70,000. Hip-to-gable and