Interior Decorating a 1930s Semi: Features, Sequence and Colour Choices

The 1930s Semi: Underestimated, Rewarding to Decorate

The interwar semi-detached house is the most common domestic building type in Outer London and much of the Home Counties. Built in vast numbers between 1920 and 1939, these houses sit in a stylistic middle ground — more spacious than Victorian terraces, with better-proportioned rooms and considerably more natural light, but often overlooked in favour of earlier period properties when it comes to careful decoration.

Done well, a 1930s semi interior can be genuinely handsome: oak parquet floors glowing underfoot, picture rails maintaining the proportion of the room, tiled fireplaces providing focal points, and a colour scheme that references the era without becoming a pastiche. Here's how to approach it.

Original Features and What to Do With Them

Oak Parquet Flooring

Many 1930s semis retain their original block parquet in the hallway and reception rooms, often hidden under carpet for decades. If you're lifting carpet and discovering parquet:

• Sand and refinish the floor before applying final coats to walls. Sanding generates clouds of fine dust that will embed itself in fresh emulsion.
• Use Bona or Osmo Polyx-Oil as a finish — these penetrating oils are durable, repairable, and look more period-appropriate than a high-gloss polyurethane lacquer.
• Protect thoroughly with Correx board and heavy-duty dust sheets once refinished; the floor must be the last substrate you stop protecting.

Picture Rails

The 1930s semi almost always has picture rails, typically at around 250mm below the cornice or ceiling line. These define the upper boundary of the wall field and affect how colour reads in the room significantly.

• Painting the picture rail in the same colour as the cornice and ceiling creates a light, spacious feel — appropriate in smaller or darker rooms.
• Painting the picture rail in a deeper tone to match the wall colour lowers the apparent ceiling height, which can make a tall room feel more intimate.
• Picking out the rail in a contrasting accent colour draws attention to it and reads as deliberate and design-led; good in a confident colour scheme, risky in a timid one.

Tiled Fireplaces

The original tiled fireplace surround — typically in muted Art Deco-influenced geometric or floral patterns in buff, green, brown or terracotta — is one of the defining features of the 1930s interior. Do not paint over tiles unless they are in very poor condition. Instead:

• Clean thoroughly with a tile cleaner and sugar soap solution
• Re-grout if joints are cracked or discoloured
• Treat the tiled surround as a feature that your wall colour should complement rather than compete with

The timber surround above the tiles can be painted in a contrasting tone — a deep sage green, warm grey or period-appropriate cream works well depending on the tile colours.

Plaster and Wall Preparation

1930s semis were built with either a three-coat lime plaster (earlier builds) or a harder gypsum plaster (later 1930s). The walls are usually in better overall condition than Victorian-era lime plaster, but:

• Hairline cracks at cornices and around window frames are normal and should be filled with a flexible decorator's caulk before painting
• Areas around original chimney breasts may show salt staining or damp patches if the flue has never been lined or has been blocked without a vent being fitted — investigate before painting
• The typical 1930s semi has previously been painted many times; if the build-up is thick and showing signs of flaking, a full strip back to plaster is better than continuing to add coats

Colour Approaches: Period Reference With Modern Livability

The interwar period had its own distinct palette, influenced by Art Deco, Scandinavian modernism and the continuing influence of the Arts and Crafts movement. The dominant colours in quality 1930s interiors were warm creams, sage greens, terracotta, warm greys and amber yellows. Translated into contemporary paint ranges:

• Sitting room: Farrow & Ball 'Mole's Breath' (a warm greige) or Little Greene 'French Grey' with off-white woodwork
• Dining room: Something with more warmth and depth — Farrow & Ball 'Hague Blue' or 'Terre d'Égypte', or Little Greene 'Bronze Green' against the original parquet
• Hallway: The typical 1930s hallway is wider than Victorian equivalents and has a generous staircase. It can take a mid-tone confidently — 'String' or 'Elephant's Breath' (Farrow & Ball), or 'Portland Stone' (Little Greene)
• Bedrooms: Lighter, cooler — 'Pale Powder', 'Light Blue' or 'Skylight' (Farrow & Ball) suit the larger bedroom windows typical of 1930s houses

Sequencing the Decoration

The correct order for a full interior redecoration:

1. Ceiling repairs and first coat
2. Wall preparation (caulking, filling, sanding)
3. Woodwork preparation (sanding, priming bare areas)
4. Undercoat on woodwork
5. Two coats on ceilings
6. Two coats on walls
7. Two topcoats on woodwork
8. Floor refinishing or protection removal

Talk to Us About Your 1930s Home

We've decorated dozens of interwar semis across South West and West London and know how to make the most of the original features while delivering a finish that's built to last. Get in touch for a free quotation.