Premium House Extension in North London & Harrow
At H Carolan Construction, we specialise in designing and building stunning house extensions that enhance your home’s space, functionality, and value. Whether you’re looking to create a larger kitchen, add a bedroom, or extend your living area, our expert team ensures a stress-free, tailored experience from start to finish.
With decades of craftsmanship and an unwavering commitment to quality and precision, we transform homes across North London and Harrow. From bespoke kitchen extensions to luxurious bedroom additions, every project is delivered on time, within budget, and with the highest attention to detail.
Find answers to your most common questions about house extensions, including planning permission, costs, and timelines. Let us guide you through every step of the process with expert insights.
The cost of a house extension in North London typically ranges between £30,000 and £80,000, depending on the size, materials, and design. For accurate pricing, consult expert house extension builders like H Carolan Construction.
Many house extensions fall under Permitted Development Rights, but larger or specific projects may require planning permission. Our team will guide you through the regulations in North London to ensure compliance.
The timeline for a house extension varies based on the project’s complexity but typically takes 8 to 16 weeks. We provide a detailed schedule to ensure timely completion without compromising quality.
Yes, our skilled house extension builders in North London specialize in seamless designs that complement your existing architecture, ensuring a cohesive look for your property.
We offer a variety of house extensions, including rear extensions, side extensions, and double-storey extensions, tailored to meet your specific needs and style preferences.
Absolutely! A well-designed house extension can increase your property’s value by up to 20%. Trust our expert builders to maximize both functionality and market appeal.
In most cases, you can stay in your home while we work. Our team takes care to minimize disruptions and maintain a clean and safe environment throughout the construction process.
Before starting, consider your budget, design preferences, and planning permissions. Our team of house extension experts in North London will help you plan every detail for a smooth process.
Yes, we provide a full-service solution, including design, planning permissions, construction, and finishing. With us, your house extension is in experienced hands from start to finish.
Simply fill out the form on our website or contact us directly, and our team of house extension builders will provide a no-obligation quote tailored to your project needs.
Premium Craftsmanship
With 40+ years of expertise, we deliver exceptional extensions built to blend seamlessly with your existing home while standing the test of time.
Tailored Approach
Every home is unique, and so is every extension. We create bespoke designs that complement your property’s character while maximising space and functionality.
Seamless Process
From planning and design to construction and finishing touches, we ensure a smooth, hassle-free experience, handling everything from building regulations to final execution.
Increased Property Value
A well-designed extension doesn’t just improve your home—it significantly boosts its value, making it a smart long-term investment.
Time & Budget Commitment
We understand the importance of timely completion and cost control. Our team ensures your project stays on schedule and within budget, with no hidden surprises.
Get started on your project today! Receive a complimentary estimate for your next home renovation or construction project
Kitchen Extensions
Love to cook and entertain? Our kitchen extensions create spacious, modern, open-plan kitchens that become the heart of your home. Whether you want a sleek contemporary design or a classic kitchen-diner, we craft functional, stylish spaces tailored to your lifestyle.
Bedroom Extensions
Need an extra bedroom for a growing family or a luxurious master suite? Our bedroom extensions offer beautifully designed, light-filled spaces that provide comfort, privacy, and added home value.
Rear, Side, and Wraparound Extensions
Maximise your living space with a rear, side, or wraparound extension. These versatile home additions offer endless possibilities, whether you’re expanding your living room, dining area, or an entire section of your house.
Free Consultation & Planning
We start with a detailed consultation, understanding your vision, needs, and budget. Our team provides expert guidance on design, feasibility, and building regulations.
Bespoke Design & Approval
Our designers craft a tailored extension plan that perfectly integrates with your home’s existing structure while maximising space and natural light.
Expert Construction & Project Management
With skilled builders and project managers, we ensure a smooth, disruption-free build with clear timelines, quality materials, and professional craftsmanship.
Final Touches & Completion
We complete your extension with high-end finishes, ensuring it meets your expectations in design, durability, and functionality.
A house extension is more than just extra space—it’s a lifestyle upgrade, a value-boosting investment, and a seamless way to enhance your home.
With H Carolan Construction, you get a trusted team of professionals dedicated to making the process stress-free, efficient, and enjoyable.
Call us today or request a free consultation to discuss your dream home renovation in North London & Harrow.