Question 1

Do I need planning permission for an extension?

Accepted Answer

Not always. Many extensions fall under Permitted Development Rights,  but it depends on the size, type, and location of the property.

Question 2

What are Permitted Development Rights?

Accepted Answer

These are rules that allow certain types of home extensions and improvements without formal planning permission, such as small rear extensions or loft conversions.

Question 3

How close can I build to my neighbour’s boundary?

Accepted Answer

Generally, you can build up to within 1 metre of the boundary, but it depends on height and design. Anything closer may require a Party Wall Agreement.

Question 4

What is a Party Wall Agreement and do I need one?

Accepted Answer

Yes, if your work affects a shared wall or is within 3–6 metres of a neighbouring structure. You may need to serve notice under the Party Wall etc. Act 1996.

Question 5

Do I need building regulations approval?

Accepted Answer

Yes. Even if planning permission isn’t required, all extensions must comply with Building Regulations (for structural safety, insulation, drainage, etc.).

Question 6

How much does a typical extension cost in the UK?

Accepted Answer

Expect £1,500–£2,500 per square metre, depending on location, materials, and complexity.

Question 7

Can I live in the house during the extension work?

Accepted Answer

Often yes, but this depends on the scale and whether services like plumbing or  electricity are being disrupted.

Question 8

Will the extension increase my council tax band?

Accepted Answer

Possibly, but usually not until the property is sold. The Valuation Office Agency may reassess your band after significant changes.

Question 9

Do I need an architect?

Accepted Answer

Not always legally required, but highly recommended for design quality, planning success, and efficient space use.

Question 10

How long does the process take from design to completion?

Accepted Answer

Typically 3–6 months for planning & prep, and 2–6 months for construction, depending on scale and approvals.  A more specific timescale will be given at the quotation stage.

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