JHarris Design & Build ltd are a construction company that deliver on time, on budget and with an attention to detail that result in the highest quality finish time after time.


Currently working alongside some of London and Hertfordshire leading Architects on projects in and around the surrounding area's, we know that it's the technical details that will turn your project from concept into something truly special. 


Feel reassured by our itemised costings spreadsheet produced as part of our quotation pack.


A Fixed Price Guarantee that gives you full peace of mind and confidence in the way in which your budget is managed.


Clear lines of communication geared towards delivering clients with a personal service which puts their needs and requirements first.  




J Harris Design & Build ltd 

Home Extensions