Modern House Extensions in Staines.
In Staines-upon-Thames, homeowners are adding space with modern extensions that make the most of their plots. Whether you're planning a rear extension to a 1930s semi or a contemporary side-return expansion, Grand Innovations delivers extensions that feel like a natural part of your house.
Read our house extension cost guideRequest Your Free Cost Proposal
Tell us about your Staines project. We reply within 24 hours to arrange a free site visit, then send an itemised Cost Proposal.
Our focus in Staines.
Our approach is to use high-performance glazing and open-plan layouts to flood your Staines home with natural light. We handle the entire Spelthorne planning process, ensuring your project is both ambitious and fully compliant.
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 Staines 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 Staines.
- 01
Rear Extensions
Adding space to Staines' traditional semi-detached and detached houses.
- 02
Glazing & Rooflights
Installing bi-fold doors and rooflights that bring plenty of daylight into your new Staines extension.
- 03
Removing Structural Walls
Safely opening up divided floorplans to create the open, flexible living spaces Staines families ask for.
- 04
Project Management
Managing all trades and building control liaison in Staines, 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 Staines 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 Staines home.
Tell us about your Staines 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.”