About Us

GEM Construction was founded by Mike Green, now Chairman, in 1997. Mike has 35 years’ experience in the construction industry having started his career as an apprentice bricklayer and achieving an HNC in Quantity Surveying.  GEM employs 35 full time staff including project and site managers, quantity surveyors and specialist tradesmen including heritage stonemasonry and heritage trained joiners.

Our Managing Director, Jon-Paul Wong, has been with the company since 2006. He has a degree in Construction and Project Management and began by working on site as a builder rapidly progressing to Project Manager and then becoming Managing Director in 2012.

The key to our success is the skills team of people that we employ and we are accredited members of CHAS. Many of the team have been working with us for more than ten years and we have developed a company culture of a strong work ethic, high integrity and standards and dedication to ensure the customer always receives 100% quality, commitment and service. 

We won the Lord Mayor’s Award at York Design Awards in 2014 for the sensitive conversion of The Star Inn the City and in 2015 for The Garden House, a two bedroom property on a historic site in the grounds of York Minster.

Our sister company, Lanstone Conservation, specialises in the maintenance, restoration and conservation of ecclesiastical, historic and ancient buildings and monuments.

Masonry Arch Masonry Planning

With extensive expertise in stonemasonry and historic building restoration, Lanstone regularly works on a wide variety of large and small historical and listed building properties within the public and private sectors.

Find out more about Lanstone Conservation

Our Team

Mike Green

Mike Green
Chairman

Wendy Green

Wendy Green
Director

Jon-Paul Wong

Jon-Paul Wong
Managing Director

Oliver Councell

Oliver Councell
Operations Manager

Tracy Lund

Tracy Lund
Human Resources Manager

Jackie Handy

Jackie Handy
Personal Assistant to the Chairman

Marc Gee

Marc Gee
Commercial Manager

Amy Beckett

Amy Beckett
Trainee Quantity Surveyor

Simon Etherington

Simon Etherington
Site Manager

Kevin Kear

Kevin Kear
Site Manager

Steve Puckering

Steve Puckering
Site Manager

Jamie Daniel

Jamie Daniel
Site Manager

Paul Walton

Paul Walton
Site Manager

Kevin East

Kevin East
Site Manager