Extensions & Loft Conversions
By Square One London & Kent — Family-Run & Trusted by Homeowners
Our Simple 4-Step Process
1. Free Home Survey & Consultation
We visit your property, discuss your ideas and advise on what's possible.
2. Planning & Design
We help with architectural drawings, planning permission, and building regulations.
3. Construction & Build
Our skilled, respectful team carry out the work with clear communication throughout.
4. Final Touches & Handover
We finish everything to a high standard — clean, tidy and ready to enjoy.
Loft Conversions
Turn unused loft space into something amazing.
Common loft conversion options:
Dormer loft conversion
Hip-to-gable conversion
Rooflight / Velux conversion
Whether you want a new bedroom, home office, guest suite, or kids’ space, we’ll help you design a layout that works perfectly for your home.
House Extensions
More space, better flow, better living.
We design and build extensions that feel like they’ve always been part of your home — not just “added on.”
We specialise in:
Rear kitchen & dining extensions
Side return extensions
Wrap-around extensions
Single and double-storey builds
From the first sketch to final finish, we manage the whole process so you can enjoy a smooth, stress-free project.
Recent Projects
Ready to Start Your Project?
We’d love to hear your plans.
Create the Space Your Home Deserves
At Square One London & Kent, we help homeowners make the most of their property with beautifully built extensions and loft conversions. Whether you need more room for a growing family, a brighter kitchen-dining space, or a quiet home office, we’ll help you create extra space that feels natural, comfortable and adds real value.
As a family-run business, we understand how important your home is. We take pride in our workmanship, communication and reliability — treating your property with the same respect we’d treat our own.
• Friendly & professional team
• Fully insured & building regulation compliant
• Clear pricing and honest timelines
• End-to-end service from design to completion