Category House Extension

Single or double-storey extension? Compare cost per square metre, the space you gain, planning, disruption and which adds more value to your home.

Bi-fold or sliding doors for your rear extension? Compare opening, glass area, views, cost and threshold so you choose the right doors for how you'll live.

Adding an extension? Your boiler may not cope with the extra radiators and hot water. Here's how to check capacity and your options before you build.

Roof lantern, flush skylights or a pitched glazed roof for your extension? Compare the options for natural light, cost and comfort, and how to choose.

Extending near a tree? On London clay, roots can cause subsidence. Here's how NHBC foundation rules work, your options, and the trees you can't simply remove.

Planning an extension over or near a public sewer? Here's when you need a Thames Water build-over agreement, the process, costs and how to avoid delays.

Hidden Costs of Home Renovations in the UK: What Every Homeowner Should Budget For Hidden Costs of Home Renovations in the UK: What Every Homeowner Should Budget For Planning a home renovation is exciting, but for many UK homeowners the…

If you’re planning a home renovation in the UK, few topics cause more confusion — or costly mistakes — than planning permission versus permitted development. Many homeowners assume they “don’t need planning” because a friend said so, only to discover…