Scores based on 12 reviews

Reliability & timekeeping

Invoice history based on 7 reviews.

Invoice History
Charged as per quote / estimate100%
Appointments reported as missed (6 months) 0
Average score 9.88
12 reviews

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Mammoth are a family run business in Stevenage established by Dane Treadwell in 2010.  An experienced Bricklayer by trade, specialising in creating high quality landscaping, Dane is a perfectionist, renowned for ensuring that all projects are impeccably finished.

We are Accredited Installers for Natural Paving - one of the UK’s leading independent suppliers of high quality, ethically sourced natural stone landscaping products. We are also installers of their sister products - Luxigraze Artificial Lawns and Resiscape Resin Bound Surfaces.

We are also Accredited Installers for Grono Artificial Grass.  Grono is one of the most realistic artificial grass lawns available.

Overview of Services


  • Patios and Driveways 
  • Artificial Lawns 
  • Hardscaping 
  • Decking and Fencing 
  • Brickwork 
  • Water Features and Ponds 
  • Turfing 
  • Garden Walling 
  • Brick BBQ’s 
  • Resin Bound Surfaces 
  • Shed and Summer House Bases and Construction


Through mainly word-of-mouth recommendations, we have gained a reputation as a professional and honest company. Our aim is to provide the best service possible by sharing our experience and expertise in landscaping and customer service among the team.

Our team are fully insured and possess the qualifications necessary to transform your property and outside space. Mammoth handle the job from its conception on paper, to its realisation. You are able to communicate and work with a single individual, where you can share your thoughts and ideas to bring them in collaboration, to life.  


We cover the county of Hertfordshire and nearby surrounding areas.


Based in

Stevenage, Hertfordshire

Works in

Hertford, Ware, Welwyn Garden City, Hitchin, Royston, Hertfordshire