Plus Rooms are London’s foremost extension builders, with an extensive portfolio of projects in Lewisham. We offer quality kitchen extensions and loft conversions in Catford, Forest Hill, Sydenham, Hither Green, Bellingham, Honor Oak Park, Black Heath, Brockley, Crofton Park, New Cross and New Cross Gate.


Our years of experience and range of skills has resulted in an established track record for delivering high-quality extensions on time and within budget. Our customers trust us to effectively plan and manage the entire process from start to finish.

We work to transform living spaces by bringing customers’ visions to life. We come highly recommended by previous customers, with over 60% of new business coming from referrals by satisfied clients. Simply tell us your requirements and we will handle the rest.

Interested in a high-quality bespoke kitchen extension or loft conversion? Before you get in touch, get inspired by viewing recent examples of extensions in Lewisham.

Projects in Lewisham

Bovill Rd


Adys Rd

East Dulwich

Landells Rd

East Dulwich

The Drive


Waghorn St


Woodbastwick Rd 1


Bromar Rd


Nigel Rd

Rye Lane

Woodbastwick St 2

Crystal Palace

Ansdell Rd


Shenley Rd