Painting a Period Conversion Flat in London: A Practical Guide

London is full of period conversion flats — Victorian terraces, Edwardian houses, and Georgian townhouses subdivided into two, three, or four separate dwellings over the past century. They're among the most sought-after properties in the city: high ceilings, original plasterwork, timber floors, and that particular quality of light you only get in rooms designed for single-family occupation. But decorating a period conversion flat comes with its own set of considerations that don't apply to a purpose-built flat or a freehold house. This guide covers what you need to know.

Check Your Lease Before You Start

This is step one and it's non-negotiable. Most leasehold flats in London — and period conversion flats are almost always leasehold — have provisions in the lease covering alterations and decoration. The specifics vary, but common requirements include:

Notification of works: Many leases require you to notify the managing agent or freeholder before undertaking decorating work, even if no formal consent is required.

Floors: A particularly common lease provision restricts the installation of hard flooring without permission — and some leases require a certain proportion of floor area to be covered with soft furnishings to manage noise transmission. This isn't strictly a painting and decorating issue, but it's worth knowing if you're planning a renovation alongside a redecoration.

Working hours: Some leases, particularly in mansion blocks or larger managed buildings, restrict the hours during which noisy work can take place.

Contractor requirements: Some managing agents and freeholders have requirements about contractors — that they be insured, that they provide method statements, or in some cases that they be drawn from an approved list.

We're experienced at working within the constraints of managed buildings. We're fully insured, carry public liability cover, and can provide any documentation that a managing agent requires. If your building has a porter or concierge, we introduce ourselves on the first day and make sure they know what we're doing and when.

Protecting Original Features in Conversion Flats

The original features that make period conversion flats so desirable are also the things that most need protecting and preserving during decoration. In London flats converted from Victorian or Edwardian houses, these typically include:

Cornices and ceiling roses: Often original, sometimes repaired or partially replaced, usually present in ground- and first-floor flats. Painting cornicing requires care — the wrong consistency of paint fills up the profile, and each coat on an already over-painted cornice risks losing more detail. We thin paint slightly for cornice work, cut in carefully, and use a small brush to work into the detail.

Picture rails and dado rails: Common in conversion flats carved from Victorian houses. These are worth preserving and highlighting rather than removing or over-painting. A picture rail at the right height divides the wall in a way that feels period-appropriate, and painting above the rail in the ceiling colour effectively raises the perceived ceiling height.

Timber floors: Not directly relevant to painting, but worth mentioning because floor protection during decoration is critical. We use proper dust sheets and take particular care with period timber floors that would be expensive to repair if paint was spilled.

Original doors: Many conversion flats retain original four- or six-panel doors. These are worth painting properly — stripping if necessary to reduce the build-up of old coats, priming, and finishing in an eggshell or satinwood that shows the panel detail clearly.

Sash windows: If your conversion flat has original sash windows, they're a significant feature of the room. See the section below on sash window painting.

Managing Noise: Working Respectfully in a Conversion Building

When you live in a conversion flat, any noise you make is likely to affect your neighbours more directly than in a purpose-built building. During a decorating project, this means thinking carefully about when noisy work happens.

Filling and sanding walls — particularly if using an orbital sander on a large area — is noisy and generates dust. We plan noisy preparation work for mid-morning to mid-afternoon, avoiding early starts and late finishes. For major jobs involving significant wall preparation or plaster repairs, we discuss the programme with our client in advance so they can manage expectations with neighbours if needed.

Solvents and strong-smelling materials — oil-based paints, varnishes, some primers — require good ventilation. In a conversion flat, opening windows is the obvious solution, but in a shared building it's also worth being conscious of fumes reaching shared hallways or neighbouring flats. We use water-based products wherever performance allows, partly for this reason.

Sash Windows in Conversion Flats

Original sash windows in conversion flats are a joy but can be a source of significant heat loss and draught if they haven't been maintained. When we paint sash windows, we take the opportunity to check:

Whether the sashes are running freely or have been painted shut (common in older conversion flats that have been neglected)
Whether the staff bead sealing the outer sash is in good condition
Whether the putty at the glazing bars is cracked or missing
Whether there is any rot at the base of the lower sash or at vulnerable end-grain junctions

Addressing these issues during a decoration project is far less disruptive than treating them as separate work later. We can reglaze small panes where putty has completely failed, free up painted-shut sashes, and treat early-stage rot before it becomes a structural problem.

Colour in Period Conversion Flats

Conversion flats often have a particular challenge: rooms that were designed as part of a larger house but now function as a complete dwelling. The ceiling heights, window sizes, and proportions were designed for rooms in a sequence — a hallway leading to a drawing room leading to a dining room — not for a self-contained flat.

Working with this means taking colour choices seriously. High ceilings and generous sash windows mean you can carry a lot of colour in a conversion flat — deeper, more saturated tones that might feel heavy in a lower-ceilinged purpose-built flat work beautifully in a Victorian first-floor conversion with nine-foot ceilings and tall south-facing windows.

We recommend getting a few large sample patches on the wall before committing to anything — at least A3 size, in the relevant light conditions, viewed at different times of day. What looks perfect on a colour card in a paint shop can look very different on a north-facing wall in January.

If you're decorating a period conversion flat in London and want to talk through your project, we're happy to help — from a simple room refresh to a full flat redecoration with specialist finishes on original features.

Painting a Period Conversion Flat in London: A Practical Guide