Home Renovation Marylebone

GS Renovation refurbishes whole flats and houses across Marylebone, giving the elegant mansion blocks and Georgian townhouses of W1 the services and layout that modern life needs. One team manages the structural work, rewiring, replumbing and finishes so a full renovation runs as a single, coordinated project.

In Marylebone, a full house refurbishment typically costs £40,000 to £150,000 or more (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Marylebone: we carry the structure, services and finishes as one contract.

The two rooms that cost the most have their own pages, with prices: kitchen renovation in Marylebone and bathroom renovation in Marylebone. With 92% of homes in Marylebone flats, the soil stack usually fixes where a bathroom can go, and the lease may need the freeholder's consent for either room.

Whole-flat refurbishment in Marylebone blocks

The period flats behind Marylebone's red-brick facades often still carry decades-old wiring, tired pipework and layouts that split the space into small, dark rooms. We strip back and renew properly, rewiring to current standards, replumbing, replastering and reconfiguring the plan so hallways, reception rooms and bedrooms work for how the flat is actually lived in today.

Sequencing is everything in an occupied block. We run the first-fix electrics and plumbing, any steel and structural changes, then plastering, joinery, kitchens, bathrooms and decoration in the right order, so trades are not tripping over each other. Throughout, we work within the building's noise hours and the freeholder's conditions, protecting communal stairs and lifts as we go.

Housing in Marylebone

Marylebone has about 12,620 homes on the Council Tax list: 54% pre-1919, 16% interwar and 29% post-war, with flats making up 92% and houses 8%. Since most homes here are flats, a whole-flat refurbishment in Marylebone works to the lease: the freeholder's licence for alterations, agreed working hours and sound insulation between floors.

Choosing the building control route for a Marylebone flat refurbishment

92% of Marylebone homes are flats, so a whole refurbishment here is usually a flat, and Westminster's District Surveyors make one decision simpler. For residential refurbishment below the value threshold in their schedule, the building notice charge and the full plans plan charge are the same, with no separate inspection charge. With the charge the same either way, choose the route by risk. A refurbishment that moves the kitchen, changes the way out of the flat or touches structure is better on full plans, so the drawings are checked before the strip out starts.

Marylebone's housing is old, with 54% of homes built before 1919, and a refurbishment in a building of that age tends to find wiring and pipework from several eras hidden in walls and floors. Westminster issues the completion certificate only once all fees due are received and the relevant electrical and gas certificates are supplied. On a whole flat that can mean an electrician's certificate for every new circuit and a gas engineer's certificate for the boiler, so we collect them as each trade signs off rather than chasing them at the end.

Restoring period features across W1

Marylebone's Georgian and Edwardian interiors carry cornicing, ceiling roses, panelled doors, sash windows and fireplaces that give the rooms their character. Where these survive we repair and restore them, and where they have been lost to earlier modernisation we can reinstate sympathetic profiles, balancing the period feel of the building against the insulation, sound reduction and heating a comfortable W1 home now expects.

A whole-house renovation is also the moment to improve comfort quietly. Between flats we can upgrade acoustic separation to reduce noise transfer, a common concern in purpose-built blocks, and we route new services thoughtfully so they disappear into the fabric. Notifiable electrical work is certified by a registered electrician under Part P, and we hand over the paperwork your freeholder and future buyer will want.

• Complete property refurbishments and whole-house renovations
• Staircase repair, replacement and balustrade work
• Snagging list agreed and worked through before handover

VOA Council Tax stock of properties, March 2025, for Marylebone & Park Lane and Bryanston & Dorset Square. Counts rounded by the VOA.

If this is your first project in Marylebone, these are worth a look: load-bearing wall removal in Marylebone, home renovation across Westminster, builders in London, how we run a London renovation, our London home renovation page and Renovation Budget & Contingency.

The GS Renovation Difference in Marylebone

A Marylebone refurbishment involves many trades, a leaseholder's obligations and a live building around you. GS Renovation gives you one accountable team for the whole job, from first-fix services to the final coat, working within Westminster's building rules and the block's management. Our founder's 30+ years on the tools mean tidy working, sensible sequencing and a finish that respects the period property.

• Building control applications and inspections coordinated for you
• Notifiable electrical work certified by a registered electrician under Part P
• A snagging list agreed and worked through before handover

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.