Before beginning a basement project in areas such as Cheshire, Harrogate, Newcastle or the Lake District, it’s essential to assess soil conditions, groundwater behaviour, neighbouring structures and required temporary works. Early consideration of drainage strategy, waterproofing design (BS 8102:2022) and local planning policies ensures a smooth process. Working with experienced basement contractors in Northern England gives you full compliance with structural, safety and environmental requirements from day one.

Timescales depend on scope and structural complexity. A typical retrofit basement may take 18–26 weeks, while a full new-build basement or multi-level shell & core structure can take 6–12 months. Factors include engineering requirements, waterproofing design, access constraints and planning conditions. Our sequencing follows strict BS 5975 temporary works procedures for safety and efficiency.

Most councils across Cheshire, Greater Manchester, Yorkshire, Northumberland and County Durham require planning permission for basements involving excavation, lightwells or external access. Some internal conversions may fall under permitted development, but this varies by authority. We prepare complete planning packages including drawings, engineering input and Basement Impact Assessments (BIA) where required.

Costs vary based on engineering complexity, soil conditions and structural requirements. As a guide, retrofit basement construction typically begins from £2,500–£3,500 per m², while new-build basements start from £3,500–£5,000+ per m². Factors such as temporary works, waterproofing class, access and design detail all influence pricing. We provide detailed, transparent cost plans following a full feasibility review.

All waterproofing is designed in line with BS 8102:2022 by a named CSSW waterproofing specialist. We specify advanced systems such as cavity drain membranes, sump pump chambers, and engineered drainage paths integrated into the reinforced concrete structure. Our approach ensures long-term dryness, resilience to hydrostatic pressure, and complete protection of the finished space.

We specialise in luxury basement construction for high-value homes across the North. This includes shell & core structures for swimming pools, gyms, wine cellars, spa suites, multi-purpose family spaces and multi-level RC basements. All projects are engineered in-house by RIBA architects and chartered structural engineers, ensuring performance, safety and longevity.

With over 30 years’ experience delivering engineered basement structures, we offer a complete in-house service covering design, temporary works, excavation, RC shell & core and BS 8102 waterproofing. Our team of RIBA architects, chartered engineers and CSSW specialists deliver safe, dry, beautifully structured underground spaces for premium homes across Cheshire, Yorkshire, Northumberland and the Lake District.