Is Harnham in a conservation area?

Old Harnham (the historic village near the river) has conservation area status. The 1960s–1980s estates in the newer parts of Harnham are not designated and have standard PD rights. We check your exact address during our assessment.

Can I extend near the River Avon in Harnham?

Properties near the river may be in flood zones 2 or 3. Extensions are still possible, but a Flood Risk Assessment may be required and flood-resilient construction details should be incorporated. We identify flood zone status as standard.

Extension Plans in Harnham, Salisbury

Harnham is a residential area south of Salisbury city centre, across the River Avon. The area offers a mix of period and modern properties within walking distance of the city. East and West Harnham have distinct characters, with period cottages in Old Harnham and 1960s–1980s estates in the newer parts.

Property mix in Harnham

Period cottages in Old Harnham (some listed), 1960s–1980s houses in the newer estates, and some larger detached properties. The older parts have conservation area status. The newer estates offer straightforward extension opportunities with standard PD rights.

Our services in Salisbury

3D Laser Survey

£650

A 1.5-hour on-site visit with a 3D laser scanner to capture millimetre-accurate measurements of your property. The foundation for precise structural calculations and planning drawings.

Structural Calculations

£350

Engineer-certified structural calculations for your extension or wall removal. Covers beam sizing, foundation design, and Building Regulations compliance.

Planning Application

£2,200

Full householder planning application preparation and submission. We handle the drawings, design and access statement, and council liaison from start to finish.

Building Regulations Drawings

£399

Technical construction detail drawings that satisfy Building Regulations. Covers insulation, drainage, structural details, and everything your builder and building control need.

Builder Introduction

£149

We match you with 2–3 vetted local builders who specialise in your type of project. Includes a professional brief so every builder quotes on the same scope.

Certificate of Lawfulness

£1,500

A legal document confirming your extension falls within Permitted Development rights. Protects you at resale — mortgage lenders and solicitors expect it.