Extensions & Conversions

Improve your Home

At Harpers Home Developments Ltd, we specialise in creating spacious, light-filled extensions and conversions across Surrey & Middlesex. From single-storey rear builds and side returns to full loft transformations, our in-house team manages every aspect from planning and structural work to finishing touches ensuring seamless integration with your existing home.

Our comprehensive services include loft conversions, structural brickwork & blockwork, first & second fix carpentry (stud walls, joists & door linings), partition walls, dry lining & skim finishes. By coordinating every trade under one roof, we deliver on-time, on-budget projects with exceptional quality and attention to detail.

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Our Extensions & Conversions Expertise

Loft Conversions

Transform unused attic space into bright, functional rooms with full structural reinforcements, new dormer or Velux windows, insulation, wiring, pluming to final fix, all managed in-house for a seamless finish.

Structural Brickwork & Blockwork

Our certified masons deliver robust extensions and rebuilds using high-quality bricks and blocks, ensuring precise bonding, damp-proof courses and compliant load-bearing walls.

First & Second Fix Carpentry

From erecting stud walls, joists and door linings to installing skirting, architrave and bespoke finishes, we handle every carpentry phase with expert precision.

Partition Walls, Dry Lining & Skim Finishes

Create smooth, modern interiors with our partition wall construction, plasterboard dry lining and polished skim-coat finishes, ready for decoration or tiling.

Why Choose Harpers for Extensions & Conversions?

Other Related Services

Complete Your Project
with Additional Expertise

Explore our in-house Extensions & Conversions, Specialist Trades and Landscaping Projects to complement your renovation and deliver a seamless, all-in-one solution.

Landscaping Projects

Hard landscaping, patios, driveways, fencing, decking and soft landscaping features.

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Demolition & Groundwork

Controlled soft strip-outs, excavations, drainage installations and waste management services.

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Specialist Trades

Expert plumbing, electrics, roofing, plastering, floor screed and tiling services.

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Let’s Get to Work

Bring Your Extension & Conversion to Life

From structural foundations and brickwork to stud walls, joists and premium interior finishes, our in-house team manages every phase of your extension or loft conversion. With transparent timelines, dedicated project management and three generations of Best family craftsmanship, we deliver seamless, on-budget home expansions.