Greendoor
Durham Wakefield Watford London Maidstone
0191 3753 876
info.admin@green-door.com

Our Team

Steven Lonsdale

Steven Lonsdale

Managing Director

Steven has worked in Building Control for over 21 years gaining a wealth of experience working for Local Authorities located in North Yorkshire, Oxfordshire and Middlesbrough. In addition, prior to establishing Greendoor, Steven worked for a Corporate Approved Inspector in Central London. Steven prides himself on using his experience and professional qualifications to provide clients with a helpful proactive service.


David Henderson

David Henderson

Specialist Fit Out Manager

David has been a Building Control Surveyor for over 28 years working in both Local Government and the Private Sector. During that time he has gained a wealth of experience in all sectors and project sizes.

David joined Greendoor in 2008 to assist Steven in Greendoor’s expansion and to gain Corporate Approved Inspector status. David prides himself on providing clients with a helpful proactive service.


Mike Dodds

Mike Dodds

Office Manager - Durham

Mike has worked in Building Control for over 25 years gaining a wealth of experience working for Local Authorities located in Durham and Darlington, as well as one of the largest Corporate Approved Inspectors before joining and assisting with the expansion of Greendoor Building Control & Specialist Services. Mike prides himself on using his experience and professional qualifications to provide clients with a helpful proactive service.


Kevin Houston

Kevin Houston

Senior Building Control Surveyor

Kevin joined the company after graduating from University. Having now accumulated over 5 years experience Kevin has learned the discipline of Building Control on a wide spectre of projects in the Residential, Commercial and Education sectors.

As part of his training he has focused heavily into the requirements of Approved Document L and has gained both BRE and Elmhurst accreditation to produce thermal calculations for both domestic and non-domestic properties.

Kevin enjoys all aspects of the job and strives to use the technical knowledge he has accumulated to help find practical solutions both on site and at designs stage to assist clients.


Alistair Moore

Alistair Moore

Office Manager - London

Alistair has worked in Building Control for over 9 years, gaining a wide range of experience working for a Local Authority located in the city of Carlisle and now for Greendoor based in the Kent office.

Alistair uses his experience and professional qualifications to provide clients with a helpful proactive service to fulfil the clients requirements and ensure Building Regulation compliance.


Mark Ringshall

Mark Ringshall

Associate Director

Mark has worked in Building Control for over 12 years, gaining a wide range of experience working on small Domestic works to complex Commercial, Industrial and Public buildings. Mark has further developed his technical competence with a range of further education and qualifications, aimed at providing clients with a helpful and proactive service to fulfil client requirements and ensure Building Regulation compliance.


Mike Wall

Mike Wall

Structural Engineer

Mike gained full membership of the Institution of Structural Engineers in 1973. He became a Senior Engineer with Simpson Coulson and Partners in 1975 and was then made up to an Associate in 1980. During his career he managed a team of up to ten Engineers and Cads operators.


He has also worked on numerous schemes including Schools, Colleges, Commercial developments, Private and NHS hospitals and various Housing developments. He has also prepared Structural Reports on all types of both new and old buildings, including renovation schemes.


Stuart Martin

Stuart Martin

Office Manager - Kent

Stuart has worked in Building Control for over 10 years gaining experience both in the private and public sector. He has successfully worked on many different types of project, ranging from domestic to complex hospitals, Schools and other such public buildings.



Stuart considers it his role to provide helpful and functional support to clients in a proactive manner, whilst maintaining the need to adopt a value engineered approach to assist with client budget limitations.


Bryan James

Bryan James

Building Control Surveyor

Bryan has worked in the construction industry for over 20 years. Before becoming a Building control surveyor Bryan was mainly working on construction sites in a supervisory role as well as hands on. Bryan’s experience on domestic and also commercial projects allows him to provide clients with practical, cost effective solutions.


David Russell

David Russell

Senior Building Control Surveyor

David joined Greendoor having previously worked in Local Authority Building Control. During this time David has worked on a varied workload of projects including healthcare, retail and large scale residential developments. David’s varied Building Control experience and training allows him to provide clients with a pro-active and cost effective service while ensuring Building Regulation compliance is achieved.


Stuart Twitchin

Stuart Twitchin

Senior Building Control Surveyor

Stuart has worked in Building Control for over 26 years gaining a wealth of experience working for Local Authorities located in London and Hertfordshire.

Stuart prides himself on using his experience and professional qualifications to provide clients with a helpful proactive quality service.


Graham Hoare

Graham Hoare

Building Control Surveyor

Graham has worked in the construction industry for over 20 years. Before becoming a Building Control Surveyor Graham was working on construction sites in a training/supervisory positions. Graham has also gained a wealth of hands on construction experience working on domestic, renovation and also commercial projects. Graham’s knowledge of the industry helps him to provide clients with practical solutions.


Wayne Locking

Wayne Locking

Senior Building Control Surveyor / Group Training Manager

Wayne has worked in Building Control over 25 years for several Local Authorities and Approved Inspectors around the country. He has also worked for a major Fire Engineering Consultancy and uses this wealth of knowledge and experience when dealing with domestic and commercial projects to assist in providing clients with a proactive approach to meet their needs whilst still fulfilling legislative requirements.


Darren Davies

Darren Davies

Building Control Surveyor

Darren has worked in the construction industry for 29 years.  Before coming a building control surveyor Darren worked in various roles, both hands on and supervisory, overseeing domestic, commercial and industrial projects.


Having run his own construction business, Darren understands many of the issues faced by clients and can assist in providing practical helpful solutions

Don Bardwell

Don Bardwell

Senior Building Control Officer

Don has extensive experience in all aspects of Local Authority and Approved Inspector Building Control, starting in 1972 and continuing through to today.

He has been involved with building byelaws, 1936 and 1961 Public Health Acts, 1965 to 1974 Building Regulations and Approved Documents.

He also has experience of a full range of commercial projects, hospitals, schools industrial and office buildings together with residence and mixed use buildings.


Clive Fuller

Clive Fuller

Senior Building Control Surveyor

Clive has worked in Building Control for over 32 years gaining a wealth of experience working for three Local Authorities located in Hertfordshire, including managing both the Three Rivers and Watford building control teams.

Clive with his teams has, spanning over a decade, won numerous Government customer service awards and he prides himself on using his experience to provide clients with a helpful customer focused service.


Paul Cain

Paul Cain

Building Control Surveyor

Paul has worked in Architectural Practice,
for an Approved Inspector and also a construction Main Contractor within the North East of England since
leaving university.

Paul enjoys all aspects of the job and strives to utilise the technical knowledge he has accumulated to help find practical solutions both on site, and at the design stage to assist clients. 


Stephen Coffey

Stephen Coffey

Building Control Surveyor

Since leaving university, Stephen has worked in various construction roles from that of an Air Test Engineer covering the South of England, to his most recent position of Building Surveyor for a large global architectural firm based in Central London.

Stephen prides himself on using his experience and professional qualifications to provide clients with a helpful proactive service.


Jason Foster

Jason Foster

Associate Director

Jason has worked in the Building Control and Fire Safety field for 26 years having initially served at Local Authority until 1998 and from then onwards in the Private Sector Building Control sector. Jason has worked on major public and commercial properties in ensuring that compliance is achieved with Building Regulation and Fire Safety requirements in a proactive manner to meet with client requirements.


Mark Bell (ACABE)

Mark Bell (ACABE)

Senior Building Control Surveyor

Mark has been in the Construction Industry for over 28 years working in both Local Government and the Private Sector. During that time he has gained a wealth of experience in all sectors and project sizes.

Mark started his Career a Site Engineer and was the Senior Engineer on The Huddersfield Stadium and the Cradlewell Bypass in Newcastle.

He moved into Building Control in 1996 and has been working as Building Control Surveyor for 20 years. Mark has worked on numerous large projects within Central London and throughout the UK

Mark joined Greendoor in 2016 to assist Steven and David in Greendoor’ s expansion. Mark prides himself on providing clients with a helpful proactive service.


Stuart Janman

Stuart Janman

Building Control Surveyor

Stuart started his building control career with an Approved Inspector in Central London before joining the Watford Greendoor Building Control Office. Stuart works on a wide range of schemes including office fit outs, flats, domestic works, mixed used schemes, retail and hotels.


Dale Prosser

Dale Prosser

Senior Building Control Surveyor

Dale has worked in Building Control for over 11 years and has in excess of 20 years experience in the construction industry. Dale has gained a wide knowledge of the Building Regulations and associated legislation, with vast amount of experience in both commercial and residential projects. He communicates well on all levels and can work well within a team or his own initiative. Being focused and committed allows Dale to provide clients with an exceptional service.


Anthony Murdoch

Anthony Murdoch

Building Control Manager

Anthony has over 12 years experience working in Building Control, both within Local Authority and the private sector as an Approved Inspector. During this time, Anthony has gained significant knowledge and experience dealing with a wide variety of building projects ranging from small domestic extensions to multi-million pound commercial projects for schools, office, hotel and retail.


Admin Team 2017

All companies rely on a backbone of support staff. I am extremely proud and privileged to work with our administration teams of our regional offices who embrace the core principles of the company.

Our administration not only provides an excellent service to our technical staff but embrace the need to continually review our systems to the benefit of the company and our clients.

Steven Lonsdale, Managing Director

Recent News Stories

Anthony Murdoch joins to head up the new Bedford Office
Anthony Murdoch joins to head up the new Bedford Office
27 April 2017

Promotion to Associate Director - Jason Foster
Promotion to Associate Director - Jason Foster
27 April 2017

The London Office Expands into new premise
The London Office Expands into new premise
27 April 2017

Promotion to Associate Director - Mark Ringsall
Promotion to Associate Director - Jason Foster and Mark Ringshall
27 April 2017

Dale Prosser Joins the Maidstone Team
Dale Prosser Joins the Maidstone Team
31 January 2017

See all news