House Extensions in Darlington | Henry James Building
Home Services Extensions
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House extensions, designed and built in-house.

Single and double-storey extensions, wrap-arounds and kitchen-diners across Darlington and the North East. Design, structure and build all under one roof.

What we do

Design, structure and build, all in-house.

From the first site visit we handle the drawings, the structure and the build itself. One point of contact, one itemised quote, the same faces on site from day one.

  • Single-storey rear and side extensions
  • Double-storey and wrap-arounds
  • Kitchen-diners and open-plan layouts
  • Steel beams and load-bearing openings
  • Roof lights, bi-folds and glazing
  • Full interior fit-out and decoration
Single-storey rear extension with bi-fold doors and rooflights in Darlington
Rear extension · Darlington 2025
Every trade under one roof

Thinking about extending?

Tell us about the property and what you are hoping for. We will come out, talk it through and come back with an honest quote.