Contact Grant Marshall or Melissa Marshall
01634 220 867
07957 474 916


Kay and Harmel (Gravesend) - House Build
"From the First call to Grant Marshall we knew that we could entrust him with our large renovation, our dream home. We have never felt more at ease after having spoken to him on the phone, and true to his word, him and his team worked in the most professional manner. This large extension was completed within the time frame specified to a very high standard."
"As well as the quality of work, Grant and his team ensured the process was as painless as possible for us. They were unfailingly polite, helpful and pleasant to deal with."
"We were very anxious to avoid making a mistake with our choice of builder and relied on a single recommendation, but we went with our gut feeling and we are delighted with the result and would be happy to recommend them to prospective customers."

Frank Johnson (Chattenden) - October 2016 - Under Floor Heating
"A big thank you, for fixing my (UFH) under floor heating!
After British Gas refused to attend to my UFH, I  was at a loss to know who to call?
Luckily I picked up my local magazine ( Village Voices ) and read the GJM advert, it offered service for Heating, Plumbing and Electrics. I phoned and within 24 hours had a visit from Grant, the owner. Mine was a difficult fault to diagnose but Grant patiently went through my complete electrics and serviced my boiler, then passed the final re wiring to Dan his Electrician.
All working,heat at last! I would recommend GJM for expertise, professionalism and great value for money!" 

Mr Cox (Hoo) - October 2016 - Boiler Service
"Good work, thorough workmanship. Happy with service".

Mr De Freitas (St Mary's Island) - January 2017 - Boiler Service
"Fantastic service, would never use another Gas engineer again. Prompt service and value for money."

Mr Tony Newnam - Beckenham - February 2017 - Driveway
"I have used GJM Southern Group LTD for many years now and as I know that my family and I always receive the best service and workmanship no matter what the project. Our driveway was in a terrible state of disrepair and now we feel proud of the front of our home as it looks wonderful. We couldnt be happier and will always use Grant and his team to complete any works within our home or businesss."

Before                                   After

Address 11 St Helens Road

Contact Grant Marshall or
Melissa Marshall
Office: 01634 220 867
Mobile: 07957 474 916

Email Address