; J Harris Design & Build Limited, Stevenage, Hertfordshire, SG1 3JN
The Federation of Master Builders

J Harris Design & Build Limited

J Harris Design & Build Limited, Stevenage, Hertfordshire, SG1 3JN


10 Primrose Hill Road,


Tel: 07890681129
Contact: Email us http://www.jharrisbuilding.com

When calling, please remember to say you got their number from the FMB website

Member details

Joined: 25/03/2015


J Harris Design & Build Ltd are a family run building contractors, now in their 4th generation. Based in Stevenage, we work in Hertfordshire and the surrounding area, covering all general building work and specialising in home extensions and loft conversions. 

We are known for our customer focused approach, with clear lines of communication that are geared towards delivering clients with a personal service which puts their requirements first. We deliver on time, on budget and with maximum attention to detail, with a high quality finish every time.

J Harris Design & Build are currently working alongside some of the leading architects in London and Hertfordshire on projects in the area. We have the technical knowledge and details that will turn your project from concept into something truly special. 

We offer an itemised costings spreadsheet as part of our quotation pack and have a Fixed Price Guarantee that gives you full peace of mind that your budget is in good hands.

All of our tradesman are highly qualified with years of experience. Our services include:

  • Architectural drawings
  • Engineers calculations
  • Full planning
  • Home extensions
  • Loft conversions
  • Roofing 
  • Landscaping & ground work
  • Bathroom installs
  • kitchens installs
  • Ceramic tiling 
  • Plastering
  • Rendering
  • Flooring
  • Plumbing and electrical work
  • Windows 
  • Driveways
  • Structural steel work
  • Bespoke carpentry
  • Stair cases


Member type

FMB member with TrustMark

  • Have signed the TrustMark license
  • Have had an inspection on a job in progress on joining and on a completed development every three years thereafter
  • Has a minimum of twelve months trading
  • Verified no un-discharged bankruptcies or relevant and outstanding County Court Judgments
  • Have passed credit checks, public record and director checks
  • Has Public and Employer (if applicable) Liability Insurance
  • VAT registration (if applicable)
  • Confirmation of business address/details
  • J Harris Design & Build Limited has agreed to abide by the FMB Disputes Resolution and Complaints Procedures
  • Has signed up to the FMB Code of Practice
  • Can offer the suite of FMB Insurance warranty products for the domestic and commercial markets (contact the FMB Insurance office for rates)

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