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Welcome to JNC - providers of construction job costing and maintenance software for Sage 50 Accounts and Xero.

We have been developing construction software for Sage 50 accounting software for over 25 years. We supply over 500 contractors across the construction industry. Whether you are looking for software to manage your contracts or maintenance jobs, we have a solution for you.

Explore our range of software for construction and maintenance


Simplify your job costing and contract management with one place to record and track project costs, work in progress and profit. .


Easily manage and schedule day to day maintenance works. Have the freedom to invoice straight from a jobsheet.

Also included within our Construction Software for Sage Accounts and Xero


Mobilise your Workforce

Successfully recieved real-time job updates from your mobile workforce with Mobile Manager 50. Both the office and onsite workers are kept up to date with progress or changes made to the jobs.


Manage Quotations

Manage your quotes lists and pipeline. Build quotes from standard products and free text. Easily convert quotes to sales invoices in Construction Manager and Maintenance Manager.


Plan Job Resources

Quickly plan resources required for each job. Share information in real time with all users. Multi-user system with clash detection, replaces your need for whiteboards and spreadsheets.


Ensure CIS Compliance

Monthly CIS returns produced by a single click. Online submission directly to HMRC. Subcontractor statements are produced automatically.

Through the successful implementation of Maintenance and Mobile Manager from JNC we transformed our business in three months from a paper-centric management, resource heavy organisation to a lean, efficient and fully mobile workforce. The system is fully integrated with Sage Accounts and deployed right across all our operations, including Installation, Servicing and Repairs. Maintenance Manager has produced a significant cultural change to our business – our main beneficiaries….our customers.

John Cardona, Sales & Marketing Director, Fire Security (Gibraltar) Ltd

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