House Extensions in Sidcup.
In Sidcup, where family houses provide a robust framework for growth, a well-designed extension is one of the most useful home improvements available. At Grand Innovations, we deliver Sidcup extensions that are designed to sit naturally with the original house and to work for family life.
Read our house extension cost guideRequest Your Free Cost Proposal
Tell us about your Sidcup project. We reply within 24 hours to arrange a free site visit, then send an itemised Cost Proposal.
Our focus in Sidcup.
We handle every trade ourselves, from the foundations up. Our focus is on the large, glazed kitchen-diners that Sidcup families most often ask for.
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 Sidcup 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
Planning authority
London Borough of Bexley
We handle applications, party wall agreements and building regulations on your behalf.
Local housing stock
1930s semis · Victorian terraces · modern family homes
Also serving nearby
What we deliver in Sidcup.
- 01
Rear & Side-Return Expansions
Adding space to Sidcup's traditional semi-detached and detached houses.
- 02
Matching the Existing House
Matching period brickwork and rooflines so your extension sits naturally with your Sidcup home.
- 03
Open-Plan Living Creation
Removing structural walls to create large, flexible family rooms in Sidcup.
- 04
Design & Build Delivery
Managing all Bexley planning applications and specialist trades in Sidcup, 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 Sidcup 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 Sidcup home.
Tell us about your Sidcup 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.”