House Extension in Esher
As one of Surrey’s trusted extension specialists, KT5 Construction delivers a smarter, cost-effective way to expand your home in Esher. From first ideas to final handover, we combine careful planning, transparent pricing, and practical cost-saving strategies—so you can create the space you need without stress or overspending.
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
Esher Home Extensions Done Right: What to Expect
Why Choose KT5 Constructions for Your Esher Project?
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Local insight that makes a difference – We understand Esher’s mix of Victorian villas, 1930s semis, and detached family homes, including conservation sensitivities and Elmbridge Borough Council requirements. Designs are tailored to maximise space while respecting your street’s character.
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Single accountable team – One partner for design, permissions, build, and finishing—no hand-offs, no gaps.
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Fixed costs, clear programme – You’ll get an agreed scope, an honest schedule, and regular progress updates.
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Value engineering built-in – Smarter specifications stretch your budget without compromising safety, quality, or longevity.
Extensions We Commonly Deliver in Esher & Nearby
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Single-storey kitchen/dining extensions that open onto the garden
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Side-return and wrap-around layouts to unlock family living space
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Double-storey additions for extra bedrooms, bathrooms, and home offices
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Loft conversions and dormers to make the most of attic space
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Garden rooms and orangeries for flexible office, gym, or leisure use
Every project is planned around quality, value, and compliance for established residential streets.
Our Value-First Approach
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Budget clarity – Fixed-price contracts protect against hidden extras.
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Specification smarts – Recommendations balance aesthetics, performance, and lifecycle cost.
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Transparent comms – Detailed programmes, site updates, and clear payment schedules.
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Aftercare mindset – We build for long-term performance, not short-term fixes.
How Your House Extension Comes Together
Consultation & Free Design Offer
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 get your scheme moving from day one.
Planning & Approvals
We handle permitted development checks, planning applications, neighbourly matters (including party wall where required), and building control approvals—streamlining the paperwork so you don’t have to.
Construction & Site Management
Your dedicated site manager coordinates trades, inspections, and quality checks—covering groundwork, structure, roofing, windows/doors, MEP (electrics and plumbing), and finishing—so your extension is delivered safely, neatly, and to the highest 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 Esher Homeowners Trust KT5 Constructions
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Local experience across Esher and wider Surrey
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No-surprise pricing and 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
Let’s Build the Space You Deserve
Ready to plan a House Extension in Esher that’s on time and on budget? KT5 Construction is here to help. Book your free consultation to discover how we can save you time, money, and stress—while building the home you’ve always wanted.
Frequently Asked Questions
How much does an Esher house extension cost?
Budgets vary with size, specification, and access. 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 premium finishes and complex structures
We provide fixed pricing and can phase works to suit your budget.
Do I need planning permission for an extension in Esher?
Many single-storey rear extensions fall under Permitted Development, subject to limits on height, depth, and materials. Larger works (e.g., double-storey, street-facing changes) typically require planning permission. We’ll confirm your route and handle all submissions.
How long does an extension take?
Typical timeframes (after approvals and design):
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Single-storey: ~8–14 weeks
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Double-storey/complex builds: ~12–24 weeks
Programme depends on scope, access, and finishes. We’ll agree a clear schedule before works begin.
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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