House Extensions in Biggin Hill.
Biggin Hill offers unique hillside plot sizes that are ideal for ambitious residential expansions. At Grand Innovations, we create large rear and side additions that take full advantage of the area's generous space.
Read our house extension cost guideRequest Your Free Cost Proposal
Tell us about your Biggin Hill project. We reply within 24 hours to arrange a free site visit, then send an itemised Cost Proposal.
Our focus in Biggin Hill.
We specialise in light-filled architectural designs featuring large glazing and well-planned kitchen-diners. We handle the entire Bromley planning process, ensuring your project is both ambitious and fully compliant with local guidelines.
As a design-and-build company we take on a limited number of projects at a time, so that every one gets the attention it deserves. If you are planning work on your Biggin Hill home, we would like to hear about it.
The Grand Standard
- 10% deposit, then weekly billing for completed work
- One team from design to completion
- Planning & building control managed for you
What we deliver in Biggin Hill.
- 01
Larger Rear Extensions
Making the most of the larger plots of Biggin Hill's detached houses with generous rear and side additions.
- 02
Modern Architectural Glazing
Installing bi-fold doors and rooflights that bring plenty of daylight into your new Biggin Hill extension.
- 03
Structural Engineering
Engineered steelwork to open up Biggin Hill floorplans safely into generous living spaces.
- 04
Project Management
Managing all specialist trades and building control in Biggin Hill, with weekly billing for completed work.
Greenwich Rear Extension & Kitchen
The Challenge
Opening the rear of a 1930s semi into one room meant removing a load-bearing wall between the existing kitchen and the new extension, on a site where a narrow side passage was the only route for materials in and spoil out. The new ground-floor shower room also had to be formed within the existing rear lobby, well away from the original layout's plumbing.
Our Solution
The structural opening was formed with a steel beam cased into a shallow flush bulkhead that follows the line of the removed wall, keeping the ceiling clean and the sightline from kitchen to garden completely open. Deliveries were sequenced in small daily loads through the side passage to keep the neighbouring boundary clear, and services for the new shower room were routed within the extension's floor build-up so no boxing-in was needed in the finished rooms.
Your questions, answered.
Your Cost Proposal
Measured first, then itemised.
Every Biggin Hill project begins with a free consultation and a fully itemised Cost Proposal. We take a 10% deposit three weeks before the start date, then bill weekly for completed, signed-off work.
Read our house extension cost guideTransform your Biggin Hill home.
Tell us about your Biggin Hill project and we'll arrange a free, no-obligation consultation, followed by a clear, itemised Cost Proposal, usually within 24 hours.
“The attention to detail and absolute financial transparency provided by Grand Innovations completely redefined our expectations of what a home renovation could be. High standard of work, the extension is beautiful and has added so much value onto our home. Really appreciated the weekly billing, rather than a big amount upfront.”