Builders in Chiswick: Loft Conversions, Extensions & Renovations

Cost depends on the project type, size, structure and finish level. A loft conversion, a rear or side-return extension and a full renovation are priced very differently, and period features in Chiswick's Victorian and Edwardian homes can add structural work. Crest Projects gives a written, itemised estimate after a site visit. You can also try our online cost calculator for a starting figure.

Many loft conversions in Chiswick fall under permitted development, but not all. Volume limits apply, roof extensions cannot go on the front slope facing the road, and permitted development rights are restricted in conservation areas such as Bedford Park. A lawful development certificate from Hounslow Council can confirm your position. We check this before any design is fixed.

Yes, but expect tighter rules. Bedford Park is a conservation area, so side and roof extensions, cladding and changes visible from the street usually need full planning permission. A well-designed rear extension is often achievable. We design to suit the area's character and prepare drawings that reduce the risk of refusal.

Build time depends on scope. Design, drawings and approvals come first and often take longer than the build itself. We give you a programme with start and finish dates before work begins and update you through the project. Access on narrow Chiswick streets and parking suspensions are planned in advance so the schedule stays realistic.

Yes. Most Chiswick terraces and semi-detached houses share a wall with a neighbour, so work such as loft conversions, side returns and deeper foundations usually needs a Party Wall Act 1996 notice. We guide you through serving notices and agreeing a schedule of condition, so neighbours are informed properly and the project is not delayed.

We cover all of Chiswick W4, including Bedford Park, Turnham Green, Strand-on-the-Green, Grove Park, Gunnersbury, Chiswick Park, Stamford Brook and Acton Green, as well as neighbouring areas of West London. Our office is in W7, so we are a short drive from every Chiswick street.

A loft conversion turns unused roof space into a bedroom, office or bathroom without changing the building's footprint. A house extension adds floor area at the side or rear, usually to enlarge a kitchen or living space. Loft conversions suit homes with enough roof height. Extensions suit homes with garden space to build into.

Mansard loft conversions change the roof shape, so they almost always need planning permission, and they are usually refused or heavily restricted on streets in conservation areas where the original roofline matters. Rear dormers and hip-to-gable conversions are more common routes. We assess your roof and street before recommending a design.

A side-return extension fills the narrow passage beside a Victorian or Edwardian terrace, widening the kitchen or living area. The work includes foundations, steel beams, a new roof, glazing and often a Party Wall notice. It is popular in Chiswick because it adds usable space without needing a large garden.

Many Chiswick clients stay at home during loft conversions and rear extensions, because most work is outside the main living space. Kitchen renovations and whole-house refurbishments are more disruptive. We agree access, dust protection, working hours and temporary arrangements with you before work starts.

Ask for proof of public liability insurance, recent references from similar projects, a written itemised estimate, a clear payment schedule and a named person in charge on site. Confirm who handles planning, Party Wall notices and Building Control. Visit a finished project if you can. A good builder welcomes these questions.

Yes. We refit kitchens and bathrooms as standalone projects or as part of a wider extension or renovation. That includes structural opening-up, plumbing, electrics, plastering, tiling and fitting, all managed by one team on one programme.

Call 020 8088 8281, email info@crestprojects.co.uk or use the enquiry form on our contact page. Tell us your address, the work you have in mind and your budget range. We then arrange a site visit in Chiswick, discuss options and send a written estimate.