Business Spine
We have offices located down the Spine of the UK allowing
us to provide a national service to benefit our clients.
Hover over the map below to see our office details 
North East
Office 19
Abbey Road Business Centre
Abbey Road
Durham
DH1 5JZ
Steve Lonsdale
David Henderson
Micheal Dodds
Kevin Houston
Dave Russell
Email: steven.lonsdale@green-door.com
Watford
Office 218
Citibase Watford
42 - 44 Clarendon Road
WD17 1JJ
Mark Ringshall
Stuart Twitchin
Bryan James
Email: mark.ringshall@green-door.com
Building Control
We work with architects, surveyors, project managers & home owners to check and approve schemes.
Thermal Calculations
We provide SAP & SBEM calculations for all domestic and commercial work.
Structural Engineering
We can design your domestic schemes on your behalf.