Why Basingstoke homes suit extending
Basingstoke's housing is dominated by family homes on estates such as Brighton Hill, Hatch Warren, Kempshott, Chineham, Lychpit and Popley, alongside older streets nearer the town centre and village homes across the borough. Many of these houses have generous gardens, integral or attached garages and pitched roofs with usable loft space — ideal for adding space without moving.
The most popular Basingstoke projects
Single-storey rear and kitchen extensions. The most requested project in Basingstoke. A rear extension opening into an open-plan kitchen-diner transforms how a family house works. See our kitchen extension design ideas and single-storey extensions guide.
Loft conversions. Semi-detached and detached estate houses often suit rear dormers or hip-to-gable conversions under permitted development, adding a bedroom and en-suite. Read our Hampshire loft conversion planning guide.
Garage conversions. Integral garages on Basingstoke's estates convert well into a home office, playroom or extra bedroom. Our garage conversion planning guide explains when you need permission.
Two-storey extensions. For larger families, a two-storey side or rear extension adds bedrooms and living space in one build. See our two-storey extension cost guide.
Planning in Basingstoke and Deane
Planning applications in the borough go to Basingstoke and Deane Borough Council, which covers Basingstoke itself and places such as Tadley, Whitchurch, Overton, Kingsclere, Oakley and Chineham.
Permitted development often applies to Basingstoke homes:
- Single-storey rear extensions up to 3m (semi-detached or terraced) or 4m (detached), or up to 6m / 8m through the prior approval process.
- Loft conversions up to 40m³ (terraced) or 50m³ (semi-detached and detached), with nothing on a front roof slope facing a road.
- Most internal garage conversions, where no external changes beyond a window replacing the garage door are made.
Check before you design, because:
- Several of the borough's villages and older areas include conservation areas, where permitted development is more limited.
- Some newer estates had permitted development rights removed by planning conditions when they were built — this is common and easily checked.
- Houses that have already been extended may have used up part of their allowance.
Where a scheme is permitted development, a Lawful Development Certificate gives you written proof. Where it is not, a householder application is needed — see what Hampshire councils look for.
What does an extension cost in Basingstoke?
As a build-cost guide, allow £2,000–£2,500 per m²:
| Project | Typical size | Build-cost guide |
|---|---|---|
| Single-storey rear extension | 4m x 4m (16m²) | £32,000 – £40,000 |
| Kitchen extension | 6m x 4m (24m²) | £48,000 – £60,000 |
| Two-storey extension | 2 x 15m² (30m²) | £60,000 – £75,000 |
Finishes, glazing and kitchen fit-out move these figures, and firm prices come from contractor tenders once the technical drawings are complete. For more detail, read our house extension cost guide and extension cost calculator guide.
Fixed-fee design for Basingstoke homeowners
Hampshire Build is a Hampshire architectural design practice with 20+ years in residential design and a 95% planning approval rate. Our fixed-fee packages:
- Pre-Build — £1,950 + VAT: measured survey, design drawings, planning or permitted development application, Building Regulations drawings and structural calculations from an independent qualified structural engineer.
- Premium — £2,950 + VAT: everything in Pre-Build plus contractor tender support.
- Premium Plus — £3,950 + VAT: our most complete package.
Compare them in our package guide. Your measured survey is booked within 10 working days of your deposit, and your first drawings follow within 15 working days of the survey.
See our Basingstoke page for local projects and how we work in the area.
For our service, see house extensions Basingstoke.
Frequently asked questions
Many single-storey rear extensions and loft conversions in Basingstoke fall within permitted development. You will need planning in a conservation area, where permitted development rights have been removed, or where the design exceeds the permitted limits.
Basingstoke and Deane Borough Council, which also covers Tadley, Whitchurch, Overton, Kingsclere and the surrounding villages.
As a build-cost guide, allow £2,000–£2,500 per m² — around £32,000–£40,000 for a 16m² rear extension, before finishes and kitchen fit-out.
Often, yes, where the work is internal and the garage door is replaced with a wall and window. Check that permitted development rights have not been removed on your estate.
Your measured survey is booked within 10 working days of your deposit, and your first drawings follow within 15 working days of the survey.