House Extension in Horley
As one of Surrey’s trusted extension specialists, KT5 Construction delivers a smarter, cost-effective way to expand your home in Horley. From first ideas to final handover, we combine careful planning, transparent pricing, and budget-savvy specification—so you can create the space you need without stress or overspending. Learn more about us at KT5 Construction.
At KT5, clear communication is everything. We keep you informed at every stage to ensure your vision stays on track.
What We Do
Building Construction
New Builds, Extensions, Conversions, Renovations
General Building
Property Maintenance, Handyman Service, Decorating
Design
Planning, Design, Project Management, Quality Checking
Horley Extensions Done Right: What to Expect
Why choose KT5 Construction for your Horley home?
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Local insight – From Victorian cottages and inter-war semis to modern estates near Gatwick, we design to maximise space while respecting neighbourhood character.
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Single accountable team – One point of contact for surveys, permissions, build, and finishing.
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Fixed costs & clear programme – Agreed scope, transparent schedule, and regular progress updates—no surprises.
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Value engineering – Smart alternatives that stretch your budget without compromising safety, quality, or longevity.
Popular Extension Types in Horley & Nearby Villages
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Single-storey rear kitchen/dining extensions for open-plan living
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Side-return or wrap-around layouts to unlock family space on tight plots
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Double-storey additions for extra bedrooms, ensuites, and storage
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Loft conversions and dormers to make the most of roof space
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Garden rooms/orangeries ideal for a home office, studio, or leisure room
Every project is carefully planned to deliver quality, value, and compliance on established residential streets.
How We Protect Your Budget and Programme
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Price clarity – Fixed-price contracts and line-by-line scopes reduce risk of extras
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Specification smarts – Recommendations that balance aesthetics, performance, and lifecycle cost
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Transparent comms – Detailed build programmes, site updates, and clear payment schedules
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Aftercare mindset – Built for durability and long-term performance
From Idea to Keys: Your Horley Extension Journey
Consultation & Starter Design (Free with Build)
We begin with a home or video visit to understand goals, budget, and timeline. Choose KT5 as your builder and we’ll include free architectural/structural design to move your scheme forward from day one.
Planning, Permissions & Compliance
We handle permitted development checks, planning applications, party wall notices, and building control approvals—streamlining the paperwork so you don’t have to.
Construction & Project Management
A dedicated site manager coordinates trades, inspections, and quality checks—from groundwork and structure to electrics, plumbing, and finishes—so your extension is delivered safely, neatly, and to a high standard.
Client Testimonials
“You made it so simple” – Just wanted to say thank you for making what I thought would be a difficult process much easier than I had imagined.
Thank you for my brand new house! The refurbishment and attention to detail makes it feel like a brand new house, but without the expensive cost of moving.
Just wanted to thank you for the work carried out to my new bathroom, I will definitely be in touch shortly to talk about my proposed kitchen extension.
Why Horley Homeowners Choose KT5 Construction
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Proven local experience across Horley and wider Surrey
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No-surprise pricing with clear payment schedules
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Rated for punctuality, service, and attention to detail
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Smart, long-term solutions that add real value
Horley House Extensions, Done Right
Thinking about a House Extension in Horley? Trust KT5 Construction for transparent costs, a reliable programme, and a flawless finish. Start with a free consultation and let’s build the home you’ve been imagining.
Frequently Asked Questions
How much does a Horley house extension cost?
Costs vary by size, design complexity, and specification. As a guide:
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£1,800–£2,500 per m² for well-specified standard builds
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£2,800+ per m² for high-spec finishes or complex structures
We provide fixed pricing and can phase works to suit your budget.
Do I need planning permission for an extension in Horley?
Many single-storey rear and some side extensions fall under Permitted Development if they meet current limits on height, depth, and materials. Larger or double-storey schemes, corner plots, or homes in sensitive locations usually require a full planning application. We’ll confirm the best route and handle all submissions.
How long does an extension take?
Typical timelines (subject to scope and season):
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Single-storey: ~10–16 weeks
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Double-storey / structural reconfiguration: ~16–28 weeks
Your programme will be agreed up-front and updated throughout the build.
Our Services
House Extensions
KT5 Construction provides professional house or Property Renovations Services in Ash, tailored to your unique needs. Whether you’re expanding your kitchen or creating an open-plan living area, we deliver high-quality results.
Kitchen Refurbishment
At KT5 Construction, we are specialists in kitchen refurbishment in Surrey and surrounding areas, delivering bespoke designs that enhance your living space and add value to your home.
Loft Conversions
At KT5 Construction, we specialise in creating stunning loft conversions in Surrey that add space, value, and style to your home. From dormer loft conversions to luxury loft designs, our expert team handles every detail with professionalism and precision.
Groundworks
At KT5 Construction, we pride ourselves on being the go-to groundwork Company in London, delivering top-quality services for residential and commercial projects.
Bathroom Design & Installation
Your bathroom should be more than just functional—it should reflect your personal style and offer a space to unwind. At KT5 Construction, we specialise in Surrey bathroom design and installation, delivering tailored solutions that blend elegance, practicality, and luxury.
Property Refurbishment
Our Ewell Road Surbiton Project showcases the full spectrum of our refurbishment expertise. By managing every detail, from architectural consultation to final finishes, KT5 ensures each element meets the highest standards.
New Build Homes
As a trusted New Build Builder in Surrey, KT5 Construction has been at the forefront of creating bespoke, high-quality homes designed to meet modern living standards.
Architecture & Design
Expert architectural planning & creative design solutions for residential and commercial projects in Surrey & London.
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