
North West London
Bathroom renovation in North West London
Bathroom renovation in North West London is a water problem before it is a finishes problem. Converted Victorian and Edwardian houses have timber intermediate floors, uneven joists and soil stacks that sit a long way from the room you want as an ensuite. Purpose-built mansion flats in St John's Wood, Maida Vale and Swiss Cottage have shared drainage, compact footprints and a neighbour below the waste. A renovation that treats tanking, falls and extract as afterthoughts will leak, stain or stay damp — whatever the tiles cost.
Hampstead Property Services Group renovates family bathrooms, shower rooms and ensuites from a Finchley Road office. The work is a coordinated fit-out: measured survey, layout, waterproofing to a documented system, first and second fix, tiling, sanitaryware, mechanical extract and a watertightness check before handover. We do not drop in a catalogue suite. The room stays as the building planned it unless the stack and the extract will honestly support a change.
Internal bathrooms in Hampstead, West Hampstead, Belsize Park and Kentish Town conversions are ordinary: no window, a long duct run, a door that opens the wrong way for a shower. Compact ensuites in mansion flats have the opposite problem — a sash onto a lightwell, but no space for a bath and a basin without losing the door swing. Half-landing bathrooms in terraces are a third type: the stack is on the party wall and the room is whatever is left. All three can be excellent bathrooms if waterproofing, ventilation and drainage are solved in that order.
Wet rooms are specified only where the floor depth and the waterproofing system will take them. A Victorian conversion rarely has the build-up of a new-build slab. We will not draw a level-access wet room onto joists that cannot accept the fall. A pump is a last resort, written into the proposal if it is the only way the layout works, not hidden as a day-two extra.
We survey in the room. Concealed wastes, previous leaks, failed plywood under a tray and extract that dies in a void only show when you look. A written layout and specification follow the visit. Strip-out does not start until long-lead sanitaryware and tiles are dated. We do not quote bathroom renovation in Hampstead or anywhere else from photographs.
Hampstead Property Services Group Limited (company no. 17404557) renovates bathrooms from Unit 3 Palace Court, 250 Finchley Road, London NW3 6DN. Telephone 020 7101 3168.
Who bathroom renovation in North West London is for
The work is for owner-occupiers and landlords in the same North West London stock as our kitchens: converted flats, mansion blocks and family houses. Typical instructions are a single family bathroom, a shower room replacing a failed suite, an ensuite in a former dressing room or box room where the building will accept it, or two bathrooms in one programme so the house is not opened twice.
Waterproofing on timber intermediate floors is not optional. We tank wet areas to a documented system. Paint-on afterthoughts over boarded floors are how the flat below gets involved. In a mansion block we isolate, test, and do not cut into another demise without the building's process.
Facts that shape bathroom renovation in North West London
Checkable facts — office, councils, conservation dates and the housing stock — not a brochure.
- 01Hampstead Property Services Group Limited (company no. 17404557) renovates bathrooms from Unit 3 Palace Court, 250 Finchley Road, London NW3 6DN.
- 02Converted Victorian and Edwardian houses in Hampstead, West Hampstead, Belsize Park and Kentish Town typically have timber intermediate floors — tanking is a documented system, not a paint-on afterthought.
- 03Purpose-built mansion flats in Maida Vale date mainly from the 1890s–1910s; bathrooms sit on stacked wastes over a neighbour.
- 04Highgate Conservation Area was designated on 21 December 1967 and is split between Camden and Haringey; the skip licence follows the borough on the address.
- 05The Queen's Park Estate cottages were built from 1875 by the Artizans', Labourers' and General Dwellings Company; Westminster's Estate conservation area is a separate map from Brent's Queen's Park Conservation Area.
- 06Internal bathrooms without a window need mechanical extract with a clear route to outside. We will not leave a room dependent on a fan that dumps into a void.
- 07A Victorian conversion rarely has the floor build-up of a new-build slab. Level-access wet rooms are specified only where the joists will take the fall.
- 08Lord's Cricket Ground affects access on St John's Wood streets on match days; bathroom crates often go up the stair, not in the lift.
- 09Leasehold flats usually need a licence to alter if wastes move or extract is cut through a common void. Consent is the freeholder's, not ours.
What has to be right before the tiles
Bathroom renovation in this housing stock fails from water, air and the stack — not from the choice of brassware.
01
Waterproofing
Timber floors in conversions and stacked mansion flats need tanking as a system, with falls that actually drain. A coat of tanking paint over boarded floor is not a system. This is the decision that protects the room below.02
Extract
Internal bathrooms cannot rely on a window that does not exist. Duct routes through common parts, roof voids or a conservation elevation are agreed before we open up. We will not punch an insensitive grille through a principal front as a convenience.03
Drainage
Layout follows the stack that exists. Moving a WC a long way, or forming an ensuite that cannot reach a soil pipe without cutting another demise, is often the item that is not possible. Pumps are last resort, written down if needed.04
The room as found
Door swings, chimney breasts, half-landings and out-of-square walls decide whether a bath, a shower or both will fit. We survey before we specify sanitaryware. Concealed leaks and failed trays only show in the room.
Typical bathrooms we renovate
Family bathrooms, compact mansion-flat rooms, shower rooms, ensuites and half-landing stacks — each written to the building it sits in.

Family bathrooms
A bath, a separate shower where the plan allows, a basin and a WC in village houses and family houses toward the Heath, Highgate, Muswell Hill and the Suburb. Weight, floor build-up and extract on the elevation are recorded before a stone bath is ordered.

Compact mansion-flat bathrooms
Original rear rooms on risers in St John's Wood, Maida Vale and Swiss Cottage. A short bath or a shower, a basin, a sash onto a lightwell. Lifts often will not take a bath crate; the stair is the working assumption until we measure. Licence to alter is ordinary if wastes or extract move.

Shower rooms
A replacement for a failed suite, or a second room where a bath is not needed. Frameless screens and stone trays still need a substrate and a fall. We do not treat a shower as a simpler bathroom; the waterproofing is the same work.

Ensuites in conversions
Former dressing rooms and box rooms in Hampstead, Belsize Park and West Hampstead houses. Possible where drainage can reach a stack without damaging a principal room, and extract can be routed without an insensitive grille. Some rooms cannot take a shower without a pump; we will say so at survey.

Internal bathrooms
No window, a long duct, a door that fights the shower tray. Common in conversions. Mechanical extract with a clear route to outside is not optional. We will not leave the room dependent on a fan that dumps into a void.

Half-landing stacked bathrooms
The West Hampstead and Kentish Town type: the soil stack is on the party wall and the room is the remainder. Layout follows the stack. Moving the WC a long way is often the item that is not possible without work we do not do.
Conversion bathrooms, mansion flats and family houses in North West London
Bathroom renovation in conversions
Timber intermediate floors, stacked half-landing bathrooms and long drainage runs are the ordinary conversion problem in Hampstead, West Hampstead, Belsize Park, Kentish Town, Kilburn and Crouch End. Waterproofing is a system, not a paint-on afterthought. A room that cannot reach a stack is not forced into an ensuite.
Bathroom renovation in mansion blocks
St John's Wood, Maida Vale and Swiss Cottage bathrooms sit on original risers, often over a neighbour. Lifts are small; a bath crate is a stair problem. Licence to alter is ordinary where wastes or extract move. We isolate, test, and do not cut into another demise without the building's process.
Bathroom renovation in family houses
Highgate, Primrose Hill, Muswell Hill, Golders Green and Hampstead Garden Suburb take family bathrooms and occasional ensuites in existing rooms. Extract on a conservation or Trust elevation is checked before we open up. Internal bathrooms without a window need mechanical extract with a clear route to outside.
Licence, building control and extract
Building-control notification is arranged where the work falls within the current regulations — new electrical circuits, a change to drainage, or extra-low-voltage underfloor heating. We identify that at proposal stage, not after strip-out. Gas work, if a boiler or a fire shares the room or the flue, is by a Gas Safe registered engineer.
Wet areas are waterproofed to a documented system, particularly on timber floors. Drainage stays on existing stacks wherever the building allows. We do not form new external soil pipes on principal elevations as a convenience.
What a typical bathroom renovation includes
The list is the core of a typical instruction. The written proposal after survey is the contract scope.
- Measured survey of the existing bathroom, soil stack, extract route, floor build-up and waterproofing as found
- Layout for family bathrooms, shower rooms, compact ensuites and internal rooms, including door swings and access
- Strip-out, protection of floors and common parts, and licensed waste removal
- Tanking and waterproofing to wet areas to a documented system, not a paint-on afterthought, especially on timber intermediate floors
- Falls, trapped wastes and drainage alterations to existing stacks where the building allows
- First- and second-fix plumbing, including concealed cisterns, thermostatic showers and client-supplied sanitaryware
- Electrical work for lighting, extract, shaver supplies and underfloor heating circuits, notified where the regulations require it
- Tiling, flooring within the bathroom envelope, and installation of sanitaryware and brassware specified as products, not brand partnerships
- Decoration of the envelope, seals, and a watertightness check before handover
- Coordination with neighbours, freeholders and managing agents in mansion blocks where drainage or extract is shared
- A written snagging pass and care notes for seals, stone and coatings
How a bathroom renovation programme runs
01
Survey
We record the existing bathroom, the stack position, extract route, floor build-up and any listed or conservation constraints on external grilles. Concealed wastes and previous leaks are looked for, not assumed away. No layout is started from photographs.02
Layout and specification
You get a layout that fits the room you have, a specification for sanitaryware, brassware and finishes, and a note of anything that needs the freeholder, building control or a pump. Items that the stack cannot serve are taken out of the drawing, not left as a hope.03
Lead-in
Sanitaryware, tiles and any stone are ordered against the approved layout. We do not start strip-out until long-lead items have confirmed dates, so the room is not left open waiting for a tap.04
Strip-out, tanking and first fix
The room is stripped, substrates prepared, waterproofing installed to a documented system, and plumbing and electrics first-fixed. In mansion blocks we agree hours and common-parts protection with the building in advance. This is the stage that determines whether the bathroom lasts.05
Second fix and finishes
Tiling, sanitaryware, brassware, glass and decoration follow in sequence. Wastes and showers are tested before the room is signed off. Variations are written, not verbal.06
Handover
A snagging walk-through, care instructions for seals, stone and coatings, and a clean room. Outstanding items are listed in writing. Final account follows the agreed specification.
How a North West London bathroom is specified
Sanitaryware and brassware are specified as products, not as brand partnerships. Concealed cisterns, thermostatic showers, stone or ceramic trays and tiled wet walls are ordinary items; they still need a substrate that can take them. A stone bath is a weight and access problem in a conversion stair as much as it is a finishes choice.
Underfloor heating, where used, is treated as an electrical circuit and a floor-build-up problem, not as a brochure extra. In a conversion the available depth often decides whether it belongs. We will say so at survey rather than thin the insulation to make it fit.
Drainage alterations stay within the existing stacks wherever the building allows. Pumps are a last resort and are written into the proposal if they are the only way the layout works. Tiling over existing tiles is not the default; failed adhesive and trapped moisture in this housing stock make it a false economy.
What bathroom renovation in North West London costs
We do not publish a price list for bathroom renovation in North West London. Timber floors in a Hampstead conversion, a stacked mansion-flat bathroom in Maida Vale, and a family bathroom in a Highgate house are different jobs. Floor depth, the stack, extract and whether a licence to alter is needed change the figure.
The written proposal after a visit is the price. It covers tanking as a documented system, first and second fix, tiling, sanitaryware as specified products, mechanical extract and a watertightness check. We do not quote a suite from a photograph. Telephone 020 7101 3168.
Bathroom renovation neighbourhoods in North West London
Local bathroom renovation pages for Hampstead, West Hampstead, Belsize Park, St John's Wood, Maida Vale, Swiss Cottage, Primrose Hill, Highgate and the wider North West London list sit below. Each is written for that building type, council and conservation designation — not a renamed copy of this page.

Hampstead
NW3

West Hampstead
NW6

Belsize Park
NW3

St John's Wood
NW8

Maida Vale
W9

Swiss Cottage
NW3

Primrose Hill
NW1

Highgate
N6

Golders Green
NW11

Queen's Park
NW6

Muswell Hill
N10

Crouch End
N8

Kentish Town
NW5

Kilburn
NW6

Hampstead Garden Suburb
NW11
Every bathroom renovation page
- Bathroom renovation in Hampstead NW3
- Bathroom renovation in West Hampstead NW6
- Bathroom renovation in Belsize Park NW3
- Bathroom renovation in St John's Wood NW8
- Bathroom renovation in Maida Vale W9
- Bathroom renovation in Swiss Cottage NW3
- Bathroom renovation in Primrose Hill NW1
- Bathroom renovation in Highgate N6
- Bathroom renovation in Golders Green NW11
- Bathroom renovation in Queen's Park NW6
- Bathroom renovation in Muswell Hill N10
- Bathroom renovation in Crouch End N8
- Bathroom renovation in Kentish Town NW5
- Bathroom renovation in Kilburn NW6
- Bathroom renovation in Hampstead Garden Suburb NW11
Guides
How consent, tenure and sequence work on this kind of job.
- Licence to alter: kitchens and bathrooms in leasehold flats
Most flats in North West London are leasehold, and most kitchen and bathroom work in them needs the freeholder's written permission before anything is taken out.
- What decides the cost of a kitchen or bathroom renovation
There is no price list on this site. What follows is what actually moves the figure, so that a proposal reads as a set of decisions rather than a number.
- Tanking and waterproofing bathrooms on timber floors
In a converted house or a mansion flat your bathroom floor is somebody else's ceiling, and timber moves.
- Extract and ventilation in period flats
The extract route is one of the few things in a kitchen or bathroom that the building can simply refuse to provide.
- Living through a renovation: occupied-home sequencing
Most people can stay for a single room. Very few enjoy staying for a whole flat.
Bathroom renovation questions
We do not publish standard prices for a bathroom renovation. Period fabric, access, extract, tenure and consent in Hampstead, St John's Wood, Maida Vale and the wider list change the figure. We visit, then write a proposal against a defined scope. 020 7101 3168.
Internal bathroom renovation within existing rooms often does not need planning permission. Conservation-area, listed-building, Article 4 and freeholder rules still apply to extract, windows and elevations. We check the address. We do not assume permitted development in Hampstead, Highgate or Hampstead Garden Suburb.
Bathroom Renovation pages on this site cover Hampstead, West Hampstead, Belsize Park, St John's Wood, Maida Vale, Swiss Cottage, Primrose Hill, Highgate and the wider list. If the property sits just outside those pages, contact us and we will say whether we can take it on.
Tell us the address, whether there is a second bathroom, and whether a managing agent is involved. We visit, then write a proposal. A licence to alter is often needed before the room is stripped.
Yes. Wet rooms run together, then decoration closes around them. Separate contractors sequencing themselves is how a finished bathroom is opened again.
Yes. Stacked bathrooms in St John's Wood, Maida Vale and Swiss Cottage, and timber-floor conversions in Hampstead and West Hampstead, are ordinary work. The stack and the neighbour below decide the layout.
Yes. Compact stacked rooms in St John's Wood, Maida Vale and Swiss Cottage are ordinary work. Layout follows the stack and the neighbour below. A bath crate is often a stair problem until we measure the lift.
Where the floor depth, the waterproofing system and the extract will take it. A conversion rarely has the build-up of a new-build slab. We will not draw a level-access wet room onto joists that cannot accept the fall.
Internal bathroom renovation within the existing room is ordinary work. Listed and conservation rules bite when extract or the elevation change. We check the address before we plan a grille.
New external soil pipes on principal elevations, structural openings, and work that cuts into another demise without the building's process. The bathroom stays in the envelope that exists unless the stack will honestly serve a change.
Wet areas are waterproofed to a documented system. We do not treat tanking as optional in a shower or around a bath, particularly on timber floors in Victorian and Edwardian conversions.
Often, where drainage can reach a stack without damaging principal rooms, and where extract can be routed without an insensitive grille on a conservation elevation. Some rooms cannot take a shower without a pump or a revised layout; we will say so at survey rather than force it.
A single bathroom with drainage in the right place is commonly a small number of weeks. Two bathrooms, or a room that needs a new extract run or freeholder consent, takes longer. The written programme follows the survey.
Internal bathrooms in conversions need mechanical extract with a clear route to outside. We will not leave a room dependent on a window that does not exist. Duct routes through common parts or roof voids are agreed before we open up.
In mansion blocks and stacked conversions, drainage and water connections are shared. We isolate, test, and coordinate access if a connection is in a neighbour's ceiling void. We do not cut into another demise without the building's process.
Yes. We are fully insured.
Sometimes, if it is sound and the layout is unchanged. Reusing a bath or basin does not remove the need to renew tanking, wastes and seals. We will advise what is worth keeping after we see it.
British and European sanitaryware is often available within ordinary merchant lead times; some brassware and tiles are longer. We programme strip-out after the critical items are dated, so the room is not left open waiting for a tap.
Only where the floor depth and the waterproofing system will take the fall. A conversion rarely has the build-up of a new-build slab. We will not draw a level-access wet room onto joists that cannot accept it.
New electrical circuits, a change to drainage and some heating work need notification. We identify that at proposal stage. Gas work, if it arises, is by a Gas Safe registered engineer.
Often, if there is a second bathroom or a short arrangement for washing. A single bathroom in a one-bathroom flat is usually cleaner if you decant for the programme. We will say which, after we have seen the plan.
Where the stack will serve the new position without cutting into another demise. Moving a WC a long way is often the item that is not possible. Ensuites in former dressing rooms are ordinary where drainage and extract can be routed honestly.
Not as a default. Failed adhesive and trapped moisture in this housing stock make it a false economy. We strip to a substrate we can waterproof.
Sometimes. Available floor depth decides it. We treat it as an electrical circuit and a build-up problem, not as a brochure extra, and we will say at survey if the room cannot take it without thinning insulation.


