Building Extensions, Loft Conversions & Full Renovations

Proven Local Delivery

Structural precision and managed trades

100%

managed trade accountability

£5M

public liability insurance

15+

years local site leadership

Specialist Capabilities

Comprehensive residential construction

Structural Extensions

Loft Conversions

Full Refurbishments

Dormer and Velux roof conversions engineered to add spacious master bedrooms, modern en-suite bathrooms, and quiet home office environments without reducing your existing garden footprint.

Complete residential refurbishments encompassing structural layout alterations, energy-efficient heating systems, updated electrical cabling, plastering, custom tiling, and final high-finish decoration.

Rear and side-return ground floor expansions engineered around modern open-plan kitchen living, structural steel installation, integrated skylights, and floor-to-ceiling glass doors.

The Helma Commitment

Dedicated trade management ensuring clean, organized, and timely domestic construction.

We eliminate typical contractor delays by employing experienced, certified trade specialists under continuous on-site supervision. Every project maintains strict site safety protocols, clean daily working areas, and clear communication.

Detailed site quote proposal

Schedule a comprehensive on-site survey anywhere in Hertfordshire to review your structural plans, site conditions, and project timeline with our senior building team.