Here at R Lange Construction ltd we work on three main points, first and most important is customer satisfaction we will never leave a job until the client is 100% happy with our work.

Second is quality of work, all of the team are qualified and competent trades who take pride in their work, winning a master builder award this year proves this point more so.

Last but not least is environmental impact, we really do try our hardest to limit the impact that we have by doing these projects from using sustainable products using better insulation and making sure any waste we do produce is recycled as much as possible.

We look forward to hearing from you to help you achieve your building goals.

Trades offered

Builder general
General extension
Barn Conversions
Brick work
House Builder
New build
Custom/Self Build
Listed Buildings/Heritage
Listed Buildings specialist

Case studies

Welton Park,Welton, northamptonshire

  • 02 Aug 2020
  • Welton,Northamptonshire

welton extension

  • 27 Oct 2019

See more case studies

Customer testimonials

20 Jul 2021

From my experience of his work creating a detached, stone, home office, Ryan Lange is recommended in the highest possible terms. His work is pure quality, he has excellent contacts and tradesmen and he is flexible as plans inevitably evolve. In particular, the quality and price are unbeatable. - Rich Green

badby road Daventry

16 Nov 2020

Ryan Lang and his team built for us the most amazing extension to our kitchen to produce a separate dining area, downstairs loo and hallway which we are 100% thrilled with. When we moved into our house we inherited a very tired 1990’s conservatory which we needed to replace.From the start of the project Ryan filled us with complete confidence as he worked as a team with us the Listed Buildings Officer and our Architect. The project ran smoothly thanks to Ryan’s communication skills both with us and all the other trades involved. We were both working full time in London and were impressed as to how smoothly the build went; completed on time, within budget and with no mess left behind. The result has transformed the house and allows us to live as a family in a great new space. - Henrietta Cain

Badby, Northamptonshire

11 Nov 2020

This was the second build/renovation that Ryan Lange Construction (RLC) was asked to do for us as the first job was such a success ( kitchen renovation) we didn't need to look for another builder to construct us a full length extension to the back of our property. Ryan is extremely professional , his eye for detail and thoroughness is second to none. His staff turned up on time every day were a pleasure to have on site, left the site clean and tidy when leaving at the end of the day. No amount of questions were too much for Ryan , all answers given with a smile and reassurance! If you need an outstanding builder who is not going to rip you off at any stage then this young man is the one you need to look to do all your building requirements we cannot recommend him to highly. Thank you Ryan we love our new extension and kitchen renovation you did for us. - Anne & Geoff Donaldson


09 Nov 2020

Exceptional build completed on budget in extraordinarily challenging times. Ryan and his team provided full service from input into original architectural drawings to handing over the keys. Despite the difficulties of Covid, the project was completed painlessly and to the highest standard. Ryan offered considerable support and advice to help us through the hundreds of micro decisions that ensured we got the perfect modern finish we required. Our house was a largely untouched 1970s ugly house which has been transformed into a Scandi minimalist living space for three generations. We have no hesitation in recommending Ryan. - Cheryl & Shaun

welton, Daventry