Decorating a London Mansion Flat: Communal Areas, High Ceilings & Cornices

The London Mansion Flat

Mansion flats are one of London's great housing types. Built primarily between the 1880s and the 1930s, these purpose-built blocks of flats were designed to offer spacious, serviced living in desirable locations — an alternative to the terraced house for wealthy households who wanted convenience without the burden of maintaining an entire building.

The finest examples are found across Belgravia, Chelsea, Kensington, Marylebone, Maida Vale and St John's Wood. They typically feature generous room proportions, high ceilings (often 3 metres or more), decorative cornices and ceiling roses, substantial entrance halls and staircases, and a level of architectural detail that modern apartment buildings rarely attempt.

Decorating a mansion flat well means understanding these distinctive characteristics and working with them rather than against them. It also means navigating the practical realities of flat ownership — the distinction between private and communal spaces, the constraints of leasehold obligations, and the logistics of decorating within a shared building.

Communal vs Private: Know the Boundaries

In most mansion flat blocks, the communal areas — entrance hall, staircase, landings and corridors — are the responsibility of the freeholder or management company. The interior of each flat is the leaseholder's responsibility. However, the boundaries are not always as clear as they might seem:

• Your front door — the exterior face is usually communal (and subject to the block's colour scheme), while the interior face is yours to decorate
• Windows — the interior is yours, but the exterior finish may be controlled by the lease
• Balconies and terraces — decoration of railings and external surfaces is often a communal matter

Check your lease before embarking on any work that touches the boundaries. Some mansion flat leases require written consent from the freeholder for internal alterations, and this can extend to significant changes in decoration that might affect the building's character.

Working with High Ceilings

The generous ceiling heights in mansion flats — typically 2.8 to 3.4 metres — are one of their great assets, but they present practical and aesthetic challenges for decorators.

Practical considerations. Access is the first issue. Standard stepladders are often insufficient, and decorators may need scaffold towers or specialist platforms to reach ceilings and high cornices safely. In rooms with furniture that cannot be moved, this requires careful planning and the use of lightweight, narrow-footprint access equipment.

Colour and proportion. High ceilings can make a room feel airy and elegant, but they can also make it feel cold and barn-like if the decoration does not manage the proportions well. The traditional approach — and still the most effective — is to use a darker or warmer tone on the walls and a lighter shade on the ceiling, which visually lowers the ceiling height and creates a more intimate feel.

In rooms with a picture rail (common in mansion flats), you can introduce a third colour above the rail, creating a transition zone between wall and ceiling. A tone between the wall colour and ceiling colour, or a lighter version of the wall colour, works well here and adds visual interest to the upper part of the room.

Cornices, Ceiling Roses and Mouldings

Decorative plasterwork is a defining feature of mansion flat interiors. Cornices, ceiling roses, dado rails, picture rails, panel mouldings and architraves are typically present in reception rooms and bedrooms, and sometimes in hallways and even kitchens.

Preparation. Before painting, check the condition of all plasterwork. Cracks in cornices are common — caused by building settlement, vibration, and the thermal movement of the structure over more than a century. Small cracks can be filled with a flexible filler. Larger defects or missing sections may require specialist plaster repair, either with fibrous plaster mouldings matched to the existing profiles or with in-situ lime plaster work.

Painting cornices. Cornices are traditionally painted in the ceiling colour to visually extend the ceiling plane, though painting them in the wall colour or in white (when the ceiling is a different colour) is also common. The key is clean, sharp lines at the junctions between cornice, wall and ceiling. On deep or highly detailed cornices, brush work is essential — rollers cannot reach into the recesses and moulding profiles.

Ceiling roses. These are usually painted white or in the ceiling colour. On a particularly fine or elaborate ceiling rose, picking out individual elements in different tones — a technique known as polychrome decoration — can be strikingly effective, though it is more commonly associated with restoration projects than everyday redecoration.

Colour Schemes for Mansion Flats

Mansion flats suit a range of decorative approaches, from historically sympathetic schemes to contemporary palettes. Some guidelines that work well across the type:

• Warm, mid-tone colours suit the proportions of mansion flat rooms better than stark white, which can feel cavernous in large spaces with high ceilings
• Heritage palettes from Farrow & Ball, Little Greene and Edward Bulmer work particularly well, as these colours were developed with period interiors in mind
• Consistent hall and landing colours create a sense of flow through the flat. Mansion flat hallways are often long and corridors may be narrow — a single colour throughout prevents a chopped-up feeling
• Skirting and woodwork in an off-white or stone rather than brilliant white complements the warmth of period plaster and avoids the stark contrast that pure white creates against coloured walls

Practical Tips for Decorating in a Mansion Flat

Access and logistics. Mansion flat blocks usually have lifts, but they may be small, slow or period-original cage lifts that cannot accommodate scaffold towers or large pieces of equipment. Plan material deliveries and equipment access in advance, and notify the building manager.

Neighbours and noise. Sanding, stripping and preparation work generates noise and dust. Be considerate of neighbours — particularly in blocks where sound insulation between flats may be limited. Communicate your schedule to the building manager and immediate neighbours.

Dust control. Fine plaster dust from sanding cornices and mouldings travels throughout a flat. Sheet up doorways, cover furniture thoroughly, and use a dust extraction attachment on any power sanding tools.

Drying times. The thick walls and sometimes limited ventilation in mansion flats can slow paint drying times, particularly in winter. Allow adequate time between coats and ventilate rooms as much as possible during and after decoration.

Choosing a Decorator for Your Mansion Flat

Mansion flat decoration demands a decorator with experience of period interiors — someone who understands cornice detailing, can cut clean lines at complex junctions, and is comfortable working at height on tall ceilings. We have extensive experience decorating mansion flats across Belgravia, Chelsea, Kensington, Maida Vale and St John's Wood, and would be happy to discuss your project.