Modern House Extensions in Staines.
In Staines-upon-Thames, homeowners are looking to the future with modern, architectural extensions that maximize plot potential. Whether you're planning a grand rear addition to a 1930s semi or a contemporary side-return expansion, Grand Innovations delivers extensions that feel like a seamless evolution of your building.
Request Your Free Cost Proposal
Tell us about your Staines project. We respond within 24 hours with a clear, itemised proposal.
Specialist focus in Staines.
Our approach is 'modern glass design': using high-performance architectural 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 premium 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 love to hear about it.
The Grand Standard
- Transparent weekly billing, no large deposits
- One team from design to completion
- Planning & building control managed for you
What we deliver in Staines.
- 01
Thameside Expansion Design
Maximizing the footprint and square footage of Staines' traditional semi-detached and detached property layouts.
- 02
Architectural Glazing Specialists
Installing designer bi-folds and rooflights that flood your new Staines extension with natural riverside light.
- 03
Structural Re-Engineering
Opening up compartmentalized floorplans safely to create the expansive, multi-functional living hubs Staines families desire.
- 04
Complete Local Management
Managing all trades and building control liaison under our signature weekly billing framework in Staines.
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
Surveyed first, then itemised.
Every Staines project begins with a free consultation and a fully itemised Cost Proposal, and with weekly billing you only ever pay for completed, signed-off work.
Transform 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.”