House Extension in Ealing
KT5 Construction—West London extension specialists—deliver cost-effective House Extension in Ealing projects. From concept to handover, we combine smart design, transparent pricing, and value-engineering to create extra space without stress or overspending.
We prioritise clear communication, with updates at every stage so your brief, budget, and programme stay on track. Learn more about our approach at KT5 Constructions.
What We Do

Building Construction
New Builds, Extensions, Conversions, Renovations

General Building
Property Maintenance, Handyman Service, Decorating

Design
Planning, Design, Project Management, Quality Checking
Ealing Extensions: What to Expect with KT5
Why Choose KT5 Constructions for Your Ealing Project
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Local insight – We understand Ealing’s housing mix—Victorian/Edwardian terraces, 1930s semis, garden flats and maisonettes—and design extensions that maximise space while respecting street character and (where relevant) conservation considerations.
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Single accountable team – One partner for design, permissions, build and finishing—simpler, quicker, and better coordinated.
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Fixed cost, clear programme – Agree scope, price, and timeline up front. Expect regular updates and zero surprises.
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Value-engineering that lasts – Smart specifications that stretch your budget without compromising quality, safety or longevity.
Extensions Tailored to Ealing Homes
We deliver a range of solutions across Ealing Broadway, Northfields, Pitshanger, West Ealing, Hanwell and South Ealing:
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Single-storey rear kitchen/dining extensions
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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 and bathrooms
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Loft conversions and dormers for workable, compliant attic space
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Garden rooms/orangeries for home-office or leisure use
Every project is planned for quality, value and compliance within established residential streets.
Our Value-First Approach
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Budget clarity – Fixed-price contracts and clear payment schedules
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Specification smarts – Materials and systems selected for performance, aesthetics and lifecycle cost
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Transparent comms – Detailed programmes, site updates and a dedicated point of contact
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Aftercare mindset – We build for durable, low-maintenance performance



How Your Ealing Extension Comes Together
Consultation & Free Design Kick-Off
We start with a home or video visit to understand your goals, layout ideas, 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, Permissions & Compliance
We handle permitted development checks, planning applications where required, party wall coordination, and building control approvals—streamlining the paperwork so you don’t have to.
Construction & Project Management
Your 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 Ealing Homeowners Trust KT5 Construction
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Proven work across Ealing and wider West London
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No-surprise pricing and clear payment schedules
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Punctual, tidy sites and attentive service
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Practical, long-term solutions that add real value
Ready to Plan Your House Extension in Ealing?
Let’s create the extra space you need—on time and on budget. Book your free consultation today. Learn more about how we build House Extension in Ealing projects the right way, and explore our wider services at KT5 Construction.
Frequently Asked Questions
How much does an Ealing house extension cost?
Costs vary by size, complexity and specification. As a guide:
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£1,800–£2,500 per m² for standard builds
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£2,800+ per m² for high-spec finishes
We provide fixed pricing and can phase works to suit your budget.
Do I need planning permission for an extension in Ealing?
Many single-storey rear and certain side-return extensions can proceed under Permitted Development (subject to limits and conditions). Projects outside PD—such as larger wrap-arounds or works in conservation areas—typically need planning approval. We’ll advise on the best route and handle the application.
How long does an extension take?
Typical durations are 10–16 weeks for single-storey rear extensions and 16–24 weeks for larger or double-storey schemes, depending on scope, access and specification. You’ll receive a detailed programme before work begins.
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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