Modern House Extensions in Hayes.
Hayes, on the Bromley side of South East London, is a residential area of substantial 1930s semis, detached houses and older villas, many on generous plots. A rear or side extension is often the most effective way to add space without leaving the area.
Read our house extension cost guideRequest Your Free Cost Proposal
Tell us about your Hayes project. We reply within 24 hours to arrange a free site visit, then send an itemised Cost Proposal.
Our focus in Hayes.
Grand Innovations delivers house extensions in Hayes, specialising in open-plan kitchen-diners and ground-floor reconfigurations. We understand the local Hayes housing stock and the planning framework of the London Borough of Bromley. Our extensions are designed to provide the flexible space your family needs for the future.
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 Hayes 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 Bromley
We handle applications, party wall agreements and building regulations on your behalf.
Local housing stock
1930s semis · detached houses · Victorian villas
Also serving nearby
What we deliver in Hayes.
- 01
Rear & Wraparound Extensions
Turning small kitchens into large, flexible family rooms that open onto the garden.
- 02
Bi-fold & Glazing Integration
Using large glazed doors to connect your Hayes home to the garden.
- 03
Kitchen-Diner Design
Full-service design and build from the foundations up to the final kitchen installation.
- 04
Permitted Development Checks
Checking Bromley's planning rules to establish how far you can extend and which route applies.
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 Hayes 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 Hayes home.
Tell us about your Hayes 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.”