Turning good landscape ideas into projects that are properly priced.
I’m Sam Hassall, founder and Managing Director of three specialist organisations built to support the professional landscape community: LandPRO, Liberate Estimating, and GardenCOSTS. With formal training in civil engineering and long experience in horticulture and landscape technology, I understand both the structural and living elements that shape successful gardens, landscapes and public spaces.
My work brings together landscape design, construction, cost planning and project delivery — helping designers, contractors, consultants and public-realm professionals turn strong ideas into projects that are clearly understood, properly priced, and realistically deliverable.

Sam Hassall
Civil engineering background; compiler of Spon’s External Works & Landscape Price Book since 1998.

George Blane
RIBA architect with deep insight into how landscape and garden elements are constructed and their engineering feasibility.
Years lead editor and compiler – Spon’s External Works & Landscape Price Book with AECOM and Taylor & Francis — the industry standard cost reference
Standard operational areas
- Cost feasibility studies
- Tender preparation for design professionals
- Bills of quantity for tender
- Tender preparation for contractors
- Long-term maintenance budgeting
- Expert witness testimony
- Site surveys and volumetrics
- Liberate Estimating software
- Annual Spon’s compilation (since 1998)
- GardenCOSTS website
We also contribute to industry knowledge through guest lectures on landscape project costing, contract management and computer applications, plus college visits and CPD.
