House Extensions Marylebone

Ask three builders in Westminster and you will get three different numbers for house extensions, usually because they have scoped three different jobs. We price the W1 property after a survey and set out labour, materials, approvals and making good line by line. A Marylebone homeowner can then see where any difference actually sits. GS Renovation puts all of it in writing. Ring 07472 424 226 and GS Renovation will arrange a free survey at your W1 property. As a rough guide, house extensions in London typically starts from roughly £40,000 for a single-storey rear extension and rises with size and specification (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.

We will tell you exactly, once we have seen the house. Guessing a house extensions duration for a Marylebone property without a survey helps nobody, and the W1 visit is free. GS Renovation then issues a staged programme including the Westminster City Council inspection dates and the drying time that cannot be rushed. That is the version to plan a Westminster household around. Ring 07472 424 226 and we will describe how a similar W1 job ran in Westminster.

Our own team, led by one named project manager who is there from survey to handover. House extensions at a W1 address is not passed to a chain of subcontractors, so you are dealing with the people doing the work rather than a sales office. Specialist trades are coordinated directly by GS Renovation. The same manager runs your Marylebone job throughout Westminster. Ring 07472 424 226 and ask who that would be. Ask for Westminster references at the W1 survey.

Permitted development allows building up to the boundary at single storey, subject to height limits at the eaves, but foundations near a neighbour's structure engage the Party Wall Act. On a Marylebone plot we check both the planning route and the party wall position before design.

The large majority of it. Edwardian mansion flats with high ceilings and long internal corridors make up most of the housing around W1, so house extensions on them is what GS Renovation does week in and week out rather than occasionally. That familiarity is why a Marylebone quotation is priced from experience. References across Westminster are available on request. Email info@gsrenovationltd.co.uk and we will send addresses of several recent house extensions projects on properties of that age near W1 in Marylebone itself.

Usually yes for anything external. Marylebone flats rarely have permitted development rights, and much of W1 falls under conservation and listed controls, so alterations to a period block typically need planning permission from Westminster City Council. Internal reconfiguration is different and is governed by building regulations. We assess your specific building before you commit to any design.

Just ask, and expect a straight answer. GS Renovation works across Marylebone, Mayfair and much of Central London, so most enquiries about house extensions at a W1 address are within range. Where they are not, we will say so and often suggest someone else. Email info@gsrenovationltd.co.uk with the postcode and the job description. Nothing is owed for the reply or the survey. Turning work down honestly is better for a Westminster homeowner than guessing.