Start with everyday access
Tell us who uses the room and what makes it difficult. A bath edge, cramped doorway, awkward shower controls or poorly placed storage may matter more than the appearance of the tiles. We test the new layout with doors open and with space for ordinary movement. The position of towels, toiletries and cleaning equipment belongs in that exercise, because useful storage should not reduce access to the fittings you use every day.
Room measurements include the effects of any new lining, waterproofing and finished surfaces. We check clearances against the completed arrangement rather than treating the bare walls as the final dimensions. A smaller fitting can sometimes produce a more comfortable room. Where future changes in mobility are part of the brief, discuss them now so that the layout and supporting details can be considered together, without making unsupported promises about what the existing room can accommodate.
Identify the existing construction
A bathroom alteration in a house with retained rooms beneath it needs an inspection beyond the bathroom doorway. We identify where investigation or installation would reach a ceiling, wall or cupboard in the adjoining space. That information helps compare keeping the fittings in place with relocating them. It also makes clear which surfaces must be protected and where access or making good would form part of the proposal, before finishes are selected upstairs.
Historic England's Cleaver Square record includes listed terrace housing. If your bathroom is within a listed building, the extent of proposed alteration needs assessment before removal; listing is not limited to the facade unless the entry expressly limits its scope.
Sources: Historic England: Cleaver Square terrace, list entry 1358227 · Government historic-environment guidance
Coordinate drainage and water
The shower position has to work with the route available for its waste connection and with access for inspection. We assess that route before choosing a low tray or a level floor arrangement. The same principle applies to moving a WC. Keeping a fitting close to an established connection may offer a simpler arrangement, but its suitability still needs checking. An unexplained raised platform or a boxed-in route should not appear as a surprise during fitting.
Water supply requirements are considered against the chosen fittings and the rest of the home. We ask how the bathroom will be used alongside other outlets and identify any checks needed before selecting equipment. Isolation points and accessible connections are located deliberately. Concealing everything can make a room look tidy while making a straightforward repair unnecessarily disruptive; our detailing keeps maintenance in view without leaving the room visually cluttered.
Detail wet areas before tiling
A tile selection does not define the construction behind it. The specification should explain the preparation of the supporting surfaces, the treatment of junctions and the system intended for wet areas. We coordinate the chosen products rather than treating each one as interchangeable. Corners, niches, screens and penetrations are reviewed as part of the same assembly. These details need agreement before the attractive surface is installed and the supporting work becomes difficult to inspect.
The room's drainage and the way water is kept within the shower are considered together. Check where a screen ends, how its door opens and whether splashes reach furniture or the entrance. We establish the finished levels and thresholds on the drawings, including the transition into an adjoining room. A sample tile layout can also clarify cuts and alignments around fittings, preventing awkward slivers and unexplained changes in joint positions.
Give ventilation a workable route
Ventilation belongs in the design at the beginning. We identify the proposed route, terminal location and access to the equipment before enclosing a ceiling or fitting storage around it. Controls should be understandable to the person using the room. We discuss the intended operation and review how it relates to doors, windows and the home's existing arrangements. A decorative grille alone does not demonstrate that the complete proposal has been resolved.
Lighting must support both close tasks and comfortable use of the room. We consider the position of the person at the mirror, reflections in glass and the distinction between general light and a softer setting. Electrical work is specified alongside the chosen fittings and installation requirements. Where a cabinet incorporates lighting or other equipment, access for maintenance is drawn before fabrication. The bathroom should remain understandable to use after the installers have left.
Inspect the whole installation
The completion check includes operation, access and finish. Open doors and drawers, test the movement of screens, run the chosen outlets and inspect visible connections. We check the edges of sealant, tile cuts, hardware and transitions under normal room lighting. Concealed service locations and product references are recorded for future use. A room is easier to look after when the owner knows which panels are removable and which finishes require a particular cleaning approach.
For the initial discussion, send photographs that include the ceiling and doorway as well as the existing fittings. Mention any leaks, recurring marks, poor extraction or repairs already attempted. Explain whether there is another bathroom available and which neighbouring rooms might be affected by investigation. Those details help establish a realistic scope and protection plan. Decisions about occupying the property during work follow that assessment rather than a generic promise made before seeing the room.
Before work begins
Bathroom renovation in Kennington: questions
Should a Duchy estate bathroom follow the design of an older Kennington terrace?
Lambeth identifies the Duchy estate separately within Kennington's varied historic stock. We assess your room's construction and alterations instead of transferring a layout from another period or building. That includes the position of retained details, the available service routes and the finished dimensions needed by the fittings you want.
Is a level shower floor possible in every Kennington bathroom?
No assumption is made before the construction and waste route are examined. We investigate the available depth and the finished threshold you want. Where a level arrangement would involve unsuitable alterations, the design can consider a different tray or layout, with the practical consequence explained before you choose.
Can we keep the existing bathroom layout?
Yes, retaining it is a useful starting option. We still check the condition of the services and supporting surfaces rather than assuming that a familiar arrangement can simply be covered over. Better storage, more accessible controls and careful fitting choices may improve the room without relocating every connection.
What if a bathroom alteration affects a listed room beneath it?
Listing normally includes the interior of the building, not only its outside face. The investigation therefore includes any opening up needed below the bathroom. We identify affected ceilings and other retained fabric, assess the proposed intervention and agree how the work is addressed before specifying a new drain or concealed connection.
What records should I keep after completion?
Keep the specifications for fittings, maintenance instructions, relevant installation documents and a note of concealed access positions. Photographs taken before service routes are covered can also be useful where available. These records help a future repair focus on the correct part of the installation without unnecessary disturbance.
Official sources
Historic England: Cleaver Square terrace, list entry 1358227 · Government historic-environment guidance · Lambeth Kennington conservation area CA08
Checked 4 November 2026. Maps, list entries and directions must be checked for the individual property and proposed work.