Projects | Loft Conversion Bromley | Rear & Side Extension Bromley | Two-Storey Extension Bromley 

Loft Conversions, Extensions, Outbuildings & New Builds in Bromley, Beckenham and South-East London

At Thima Green Limited, we’re proud of the work we deliver — high-quality building projects completed with care, clear communication and attention to detail. Our portfolio includes loft conversions in Beckenham and Bromley, rear and side extensions in Bromley and Beckenham, outbuildings/garden rooms, and renovations across Chislehurst and South-East London.

We offer a complete design-and-build service, including full architectural and structural design. Working with trusted Bromley and Beckenham architects and structural engineers, we can arrange architectural drawings, structural calculations, and supporting documents for planning applications and Building Regulations, helping your project run smoothly from day one.

Types of projects we complete

  • Loft conversions (dormer, hip-to-gable, mansard and more)
  • Rear extensions and side extensions (including side return and wraparound options)
  • Garden rooms and outbuildings (offices, gyms, studios and storage)
  • New builds, refurbishments and renovations
  • Structural alterations and internal reconfiguration

Why homeowners choose Thima Green Limited

  • Local, experienced builders working across Bromley, Beckenham and Chislehurst
  • 15+ years’ experience in residential construction
  • Checkatrade-approved with a focus on tidy sites and reliable workmanship
  • End-to-end coordination of trades, timelines and key project stages

Whether you’re looking to unlock space with a Bromley loft conversion, extend your kitchen with a rear extension, create a side return, or build a garden room/outbuilding, we’ll guide you from the first conversation through to completion.

Browse the projects below to see examples of our completed work. If you’d like advice on your ideas or a free, no-obligation estimate, get in touch — we’ll be happy to help.