Extension Specialists in Pinner

Are you looking for an extension or building conversion specialist in Harrow?
Contact J. L. Lyons & Co Ltd in Pinner.

Make the most of your home’s existing space

Do you need extra space in your home for storage? At J. L. Lyons & Co Ltd, we offer building extensions and conversions to a high standard. Our team can design and build extra rooms that are fully functional. Your new rooms are sure to complement the design of your home. We use quality materials for all extensions. Our team has a wealth of experience in the field of conversions. Get in touch with our professionals for more information.
kitchen extension

Our extensions and conversions include:

  • Kitchen extensions
  • Barn conversions
  • Garage conversions
  • Bathroom extensions
roof lights
clad house

Home alterations

Whether you want a single or a multi-storey extension, you can count on us. We also specialise in garage conversions. We’ll make sure that we make the most of the existing space to create a room or office that you need to work from home. We’ll also ensure the proper electrical and plumbing work is completed for the extensions that we undertake.


For more information about any of our services, please contact us by phone or email.
  • citb-logo
  • TrustMark-square-logo-2018-1-300x197
  • FMB logo
  • local-authority-building-control-labc-logo-vector
  • Extensions & Conversions
  • FPA-logo


Extensions & Conversions

Don’t just listen to us. Here are what people say about us.

  • Excellent Service

    “We have used JL Lyons for a number of jobs now, including, a new kitchen, bathroom, redecorating, re-pointing, roof repairs and currently rewiring. Joe and his workers give a personal and friendly service, always helpful and experienced with the necessary skills. They are tidy and very thoughtful in their care and expertise for our needs. Trustworthy and reliable. In short – absolutely excellent!” 
  • Jan Harrow Weald

    “Excellent and professional service,provided by excellent and professional workman. All services and workmanship of a very high standard, and help and support was of a very high standard. All workman turned up on day and time arranged. I would highly recommend this firm.”
  • Highly Recommend

    “My husband and I can highly recommend Joe Lyons and his team for their working ethics. They recently completed a job for us and we are very happy.” 

Customer references available on request.