# Terra Firma - Portsmouth

Terra Firma (South) is a specialist geo-environmental and geotechnical engineering consultancy with over 20 years' experience delivering site investigation and ground assessment services across the UK. Based in Portsmouth, the firm serves residential, commercial, industrial, infrastructure, energy and renewable development sectors.

The company provides comprehensive ground investigation and risk assessment solutions, from initial desk studies through to detailed contamination analysis and remediation design. Their expertise spans geotechnical appraisals, foundation design, contaminated land risk assessment across all four phases, environmental surveys and earthworks supervision. They conduct field investigations using trial pitting, cable percussive drilling, rotary drilling and specialist probe techniques, complemented by in-house laboratory soil and rock testing.

What sets Terra Firma apart is their commitment to personally delivered, competitive professional service rather than generic consultancy approaches. They develop detailed site conceptual models to inform risk assessments for both human health and water environment impacts. Their capabilities extend to specialist areas including radon surveys, gas regime monitoring, Japanese knotweed assessment and environmental impact contributions.

The firm holds accreditations from Constructionline and the Association of Geotechnical and Geo-Environmental Specialists (AGS), demonstrating compliance with industry standards. Their proven track record includes complex projects across diverse development types, with a focus on delivering reliable, cost-effective solutions tailored to client needs rather than standardised offerings.