Blades Building LtdBLADESBUILDING
Property types

Working on a 1930s semi: the recurring themes

Interwar semis follow a pattern, and so do the projects that suit them.

Interwar semis are among the most commonly extended houses in the country, and for good reason: generous plots, a side return and a rear layout that responds well to opening up.

The small original kitchen

Kitchens in these houses were designed as separate service rooms. Combining kitchen and dining space, usually with a structural opening, is the single most transformative change available.

Side returns and rear extensions

Many plots allow a wraparound or side infill that adds width where the house is tightest, often within permitted development limits.

Early cavity construction

Cavities of this era are typically narrow and unfilled, and wall ties can be at the end of their life. Worth assessing before insulation decisions are made.

Bay windows

Bays carry load in their own way and their support needs respecting during any alteration to the front elevation.

Original features

Doors, floors and staircases in these houses are often worth retaining. Matching new joinery profiles to the originals is standard on our refurbishment work.

Common questions

Questions we get asked about this

Is a side return worth it?

On a narrow rear kitchen, adding that width often does more for how the house works than adding depth.

Can we go two storey?

Frequently possible, subject to planning and to foundations able to take the additional load.

Do these houses need rewiring?

Many have been partially updated. An electrician assesses the existing installation before scope is set.

Can you match the original brickwork?

We colour-match brick and mortar as closely as available stock allows so new work reads as part of the house.

Semi in need of more space?

We will look at the side return, the rear and the kitchen and set out the options.