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JB HOUSE LTD are a design and build company based in Northampton. As your local builder we have worked hard to establish ourselves within the construction industry. We always look to strengthen our reputation as a local building contractor so we have partnered with several governing bodies including obtaining a 10 out of 10 score on Checkatrade and accreditation with the Federation of Master Builders and Trustmark.

We are your first port of call for an established, reputable, local, design and build company, As a domestic or commercial customer, finding a reliable, cost effective and trustworthy building company can pose a few problems. The construction industry can be a minefield because currently in the UK there are no licensing requirements.

For this reason it is imperative to research the background of a company to ensure its legitimacy. It is important to use a competent firm which holds the relevant insurance and experience.

At the beginning of a project,  it can sometimes feel overwhelming and difficult to know where to look first in the search for all of the answers. Should you try a search engine such as Google or go to a recommended tradesmen site such as Checkatrade? There are so many questions to answer, for example how will your ideas translate into practice, how much will it all cost and can you afford to fund the work? Who will manage the construction schedule and how does the process itself actually play out?


Where can you find reliable, experienced tradesmen? Whether you are thinking about a simple property reconfiguration or complete house overhaul we have the experience you are looking for. Perhaps you are altering or refurbishing your home or a rental property, maybe you are considering adding a single storey extension to create the open plan contemporary kitchen and dining room you dream of. We are here to guide you on your journey from the local authority planning stages to developing your ideas into a workable architectural design you will love.


Once the project design is given your seal of approval the construction works can begin on site. JB HOUSE LTD are a vetted and approved Master builder accredited by the Federation of Master Builders and Trustmark – the government approved register of construction companies throughout the United Kingdom.

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Single & double storey extensions
Alterations, additions, loft & garage conversions
Brickwork - traditional, reclaimed & stone
Carpentry - 1st / 2nd fix, joinery, bespoke & new build
Electrical - 1st / 2nd fix, refurbishment, additions & installation
Electrical - complete rewires & alterations