Thima Green Limited is a Bromley-based building company delivering high-quality loft conversions, rear and side extensions, and new builds across Bromley, Beckenham, Chislehurst and South-East London. We’re a Checkatrade-approved team known for clear communication, tidy sites and workmanship you can rely on.

Complete design-and-build (including architectural + structural design)

We offer a fully joined-up service, from first ideas to final finish. Working with trusted Bromley and Beckenham architects and structural engineers, we can arrange architectural drawings, structural calculations, and supporting documents for planning and Building Regulations — keeping your project efficient, compliant and well managed from day one.

Our building services

• Loft conversions (dormer, hip-to-gable, mansard and more)
• Rear extensions and side extensions (including side return and wraparound options)
• New builds, renovations and refurbishments
• Structural alterations and internal reconfiguration
• Project management and coordination of trades

Local builder. Practical advice. Free estimates.

No project is too big or too small. We provide free, no-obligation estimates and straightforward advice tailored to your home and budget. If you’re looking for an experienced local builder for a loft conversion, extension or new build in Bromley and nearby areas, get in touch to discuss your plans.