Builders in Shepherd's Bush

Most W12 houses are two or three storey terraces with a back addition, a side return and a loft that can be converted. Where a house has been split into flats, each flat brings its own questions: who owns the garden and the roof, what the lease allows, and how the work affects the neighbours above or below.

Behind the walls, these houses often need the same things. Wiring and plumbing renewed, heating brought up to date, insulation improved and any damp dealt with. We survey properly at the start so these are in the design and the price from day one.

On a house, a kitchen extension usually fills the side return, runs across the back, or wraps round as one room facing the garden: see side return extensions, rear extensions in London and what a single storey extension costs.

A ground floor flat can often be extended the same way, but it always needs planning permission, because flats have no permitted development rights, and it usually needs the freeholder's consent under the lease. We look at the lease, the title and the planning position with you before any design work starts. Our house extensions page explains how we take an extension from survey to handover, and our free extension planner lets you try a layout first.

On a W12 terrace the usual loft conversion is a rear dormer, sometimes extended over the back addition as an L shaped dormer, which adds a bedroom and a bathroom without touching the garden. For a top floor flat the same applies, with planning permission and the freeholder's consent needed first. Our guides cover Victorian loft conversions and what a loft conversion costs in London, and our loft conversions page explains the types.

Some W12 houses that were split into flats are now being put back together as one family home. That usually needs planning permission, and it is a bigger job than it looks: two kitchens and two sets of services become one, the stairs and entrances are reworked, and the layout is replanned for how a family lives. At Woodside in Wimbledon we turned two flats into one high specification house and added a loft with three bedrooms and two bathrooms.

Shepherd's Bush is in the London Borough of Hammersmith and Fulham, so applications go to Hammersmith and Fulham Council. Parts of W12 are conservation areas, and inside them a dormer loft conversion is not permitted development and needs planning permission. Outside them, many rear extensions and lofts on houses can go ahead as permitted development. We check the position for your address, prepare the drawings and manage the application along with any party wall agreements.

Typical London jobs priced on our estimator in October 2026, ex VAT and indicative rather than a quotation:

• A single storey extension of about 20 m² of new floor, flat roofed, plus making good the room it joins: around £57,000.
• A rear dormer loft conversion: £68,000 to £81,000.
• A whole house refurbishment with a new extension: £1,100 to £1,350 per square metre of floor worked on.

Kitchen units, worktops and appliances are priced separately. Our minimum for a complete extension project, including finishes and fittings, is around £85,000. Our flat renovation cost guide and Victorian terrace renovation cost guide go into more detail, and the free estimate prices your own project in two minutes.

Our office is in Chiswick, a short drive away. Close by in Notting Hill we designed and built a loft conversion with an extra storey and a full refurbishment at Ladbroke Grove. For homes south of Goldhawk Road, see builders in Hammersmith.

Every project runs as one design and build service, with a single team responsible from concept to completion. We carry £10M public and employers' liability cover and plan access, deliveries and working hours around your street and your neighbours.