At D Smith Constructions Ltd we are a local family business and have been providing our high quility services for 20 years throughout the areas of Hillingdon Borough, West London, Buckinghamshire and Surrey, specialising in Loft Conversions and Home Extensions. We FMB and Trustmark Members, and Velux Certified Installers.


Northwood, Pinner, Uxbridge, Ealing, Chiswick, Ruislip, Chorleywood, Richmond, Kings Langley, Eastcote, Denham, London, Middlesex, Surrey, Buckinghamshire, Chalfont.

Call 0208 737 0362 or 07595 379414

Trades offered

Builder general
General extension
Garage conversions
Loft conversions
Carpenter and Joiner
General carpentry
Roofing general
House Builder
New build
Custom/Self Build

Case studies

Richmond Loft, Extension and Total Refurb

  • 08 Sep 2020

Loft Conversion and Rear Extension

  • 15 Aug 2018

See more case studies

Customer testimonials

08 Nov 2018

We have used Darren to carry about many building projects on our home from roof repairs to our rear extension. The extension went according to plan, and on time and I now have a lovely open plan kitchen. Darren has also r done 2 of our bathrooms. We will continue to use them for future projects. The whole team were very professional and friendly and we would definitely recommend using Darren and his team to anyone. - Miss R Duffy