Begin with the room's existing performance
Describe what you want to improve beyond its appearance. The shower may be difficult to enter, storage may be inadequate or the room may remain damp after use. Record those symptoms and when they occur. We would inspect the visible installation and identify any investigation needed before assuming a cause. A new suite should not simply conceal an unresolved drainage, moisture or service problem.
Measure the room with its doors and fittings in operation. Check the usable space beside the bath, the position for drying and the route to storage. The dimensions of a product do not describe all the space needed to use it. A wall-hung cabinet, for example, can still interfere with movement if its drawers project into the only clear route. The design should show these everyday interactions, not only a neatly arranged collection of fittings.
Resolve the drainage before settling the floor
Establish the existing waste connections and the construction available around them. Where a new shower position or different floor level is proposed, ask the designer to demonstrate how the drainage will work. We would avoid selecting a tray or promising a flush transition before the underlying arrangement has been checked. The right solution depends on the inspected building and the proposed scope.
For an apartment, identify any connection to a shared stack and the relevant building requirements. Coordinate the work with the appropriate technical contact where necessary. Keep access to serviceable components within the design, including the space needed to remove and replace them. The finished floor and wall details should then follow the verified installation, rather than forcing the installer to adapt a concealed connection around a surface already chosen.
Treat the wet area as a complete installation
The shower enclosure, substrate, waterproofing and drainage should be designed as compatible parts. Ask for the junctions to be resolved around corners, penetrations and changes of material. A decorative tile pattern does not explain how those details will perform. We would identify the inspections needed before the finish is applied and keep a record of concealed work for the homeowner.
Ventilation needs to suit the room and the available system. Check the existing arrangement before changing equipment, especially where it connects beyond the dwelling. Discuss the controls and maintenance requirements, and consider the relationship with heating and cold surfaces. Storage should not block airflow or prevent access to a component. The intention is a room that can dry and be maintained in ordinary use, with the chosen system understood rather than hidden behind an attractive finish.
Check the scope against the building
For an apartment within a higher-risk building, the government guidance distinguishes building work requiring the Building Safety Regulator's approval from exempt work and other arrangements. The precise proposal needs professional assessment. In older Vauxhall buildings, the council's conservation information may also be relevant to external changes or protected fabric. Neither a modern interior nor the label bathroom replacement settles every approval question.
We would describe the proposed work clearly for the relevant adviser, showing any changed window, outlet, wall or service route. The scope should distinguish a straightforward fitting replacement from a wider alteration. Obtain the available management requirements and record any necessary submissions before work starts. This helps the design and construction team understand the boundaries of the instruction and avoids a small-looking interior project drifting into unreviewed changes elsewhere in the building.
Sources: GOV.UK: building control approval for higher-risk buildings · Lambeth: Vauxhall conservation area CA32
Detail the surfaces for cleaning and future care
Place mirrors, lighting, controls and storage on coordinated elevations. Check the position of joints and edges around fittings before installation. A narrow gap may be difficult to clean, while a concealed shelf can collect moisture if its junction is unresolved. We would review these details with the selected products and agree a representative sample where the finish needs clarification.
At handover, operate the fittings and demonstrate the ventilation controls and maintenance access. Inspect accessible connections and review the finish under the room's lighting. Keep the product instructions and relevant installation photographs together. The homeowner should understand which surfaces need particular care, where isolation points are located and how an access panel can be removed. A bathroom should remain practical after the initial visual impact has passed, including when a component eventually needs attention.
Before work begins
Bathroom renovation in Vauxhall & Nine Elms: questions
Can the bath be replaced with a larger shower?
That can be assessed from the room layout, drainage and available construction. We would compare the usable entry, drying space and storage as well as the shower dimensions. The proposal should improve the whole room and allow a suitable installation, rather than simply occupying the largest possible area.
Does a bathroom replacement always require Building Safety Regulator approval?
No single answer applies to every scope. Government guidance identifies exemptions as well as work requiring approval in higher-risk buildings. The actual building and proposed work should be assessed by an appropriate professional. A limited replacement and a project changing layout or safety-related measures may have different implications.
How can we add useful storage without too many cabinets?
List the items used daily and place storage close to those activities. Consider shallow compartments, internal organisation and the space needed to open doors or drawers. We would also check any proposed recess against the wall construction and services. The objective is accessible storage that leaves the room comfortable to move around.
What should be investigated if the room stays damp?
Record how the moisture appears and how the room is used, then obtain appropriate advice on the possible causes. Ventilation, heating, leaks and the condition of surfaces can all need consideration. We would avoid treating a new coating or a different fan as a guaranteed solution before the underlying issue is understood.
How will future maintenance be made easier?
Keep isolation points, traps and serviceable equipment accessible, with sufficient room to work around them. Show the access arrangement on the final drawings and demonstrate it at handover. Product information and photographs of concealed routes can also help, so later maintenance does not begin with unnecessary damage to finished surfaces.
Official sources
GOV.UK: building control approval for higher-risk buildings · Lambeth: Vauxhall conservation area CA32
Sources checked on the dates recorded in the source register, most recently 5 November 2026. Maps, list entries and directions must be checked for the individual property and proposed work.