County Renovations House Extension Services
We create a space you need with bespoke house extensions from County Renovations Ltd.
We design and build single & double storey extensions across Hertfordshire, Essex & more.
Extend Your Home, Enhance Your Life
A house extension is a smart way to gain extra living space without the upheaval of moving. Whether you dream of a spacious open-plan kitchen, an extra bedroom or a dedicated home office, extending your property lets you tailor your home to your lifestyle. County Renovations Ltd helps homeowners to build extensions that feel like they were always part of the house. From single storey rear extensions to full two-storey additions, we deliver projects with care, clarity and quality.
Why Consider a House Extension?
- More Space: An extension allows you to reconfigure your ground floor or add new rooms without sacrificing garden space. You can create larger kitchens, dining areas, playrooms or bedrooms. Many clients choose to combine ground floor extension with a first floor addition for even more space.
- Better Value Than Moving: Extending is often cheaper than buying a bigger house. By improving rather than relocating, you save on stamp duty, agent fees and the stress of moving.
- Increase Property Value: Adding well-designed living space can boost your home’s market value. Even a single storey extension may add 5 – 8 percent to a property’s value, and two-storey extensions typically deliver higher returns.
- Tailored to You: Extensions offer freedom to choose layouts, finishes, glazing and roof styles. Our architects can design rear, side or wrap-around extensions, integrate rooflights for natural light or incorporate bifold doors to blend indoor and outdoor living.
- Stay in the Area You Love: Extending means you keep your community, commute and school catchment. You enjoy a home personalised to your needs without leaving the neighbourhood.
Planning Permission and Permitted Development
Whether your extension requires planning permission depends on its size and design. Under permitted development rules, you can extend a semi-detached home by up to three metres from the rear wall, or six metres with prior approval.
Extensions must stay within height and volume limits, and side or wrap-around extensions often fall outside these allowances. We prepare planning drawings and handle submissions, typically taking 5–8 weeks to prepare and submit plans, with a further eight weeks for council decision.
Building regulations always apply. They cover structural integrity, insulation, fire safety, drainage, electrics and ventilation. Our team organises structural calculations and liaises with building control to ensure compliance.
Timeline and Process
House extensions involve several stages:
- Consultation and Survey: We meet to discuss your ideas, budget and timescale. We survey the property and identify any constraints or opportunities.
- Design and Planning: Our architects design your extension and produce planning drawings. We submit planning applications or permitted development notifications as required.
- Specification and Quotation: Once plans are approved, we agree a detailed specification and fixed-price quote.
- Construction: Construction typically lasts 8–10 weeks for the main building work with a further 6–8 weeks for finishing touches and facilities (however this can vary depending on the project). We manage all trades and suppliers, keeping your home safe and tidy.
- Completion and Handover: After final inspections and building control sign-off, we hand over your new space ready for decoration. We provide workmanship guarantees and remain available for aftercare.
House Extension FAQ's
How far can I extend without planning permission?
Under permitted development, semi-detached houses can extend up to three metres, or up to six metres under prior approval. We advise on your specific property.
Will my extension add value?
Yes. Adding extra living space typically increases property value. A single storey extension can add 5–8 percent; two-storey extensions generally provide an even greater uplift.
Do you manage the whole project?
Yes. County Renovations Ltd handles design, planning, project management and construction. We coordinate all trades and provide a single point of contact from start to finish. Our all-inclusive quotes cover everything with no hidden costs.
County Renovations Ltd combines design expertise, skilled craftsmanship and clear project management to deliver bathrooms that are stylish, practical and built to last. Contact us today to start planning your perfect bathroom retreat.
Ready To Transform Your Home Today?
Download Our FREE
Expert Guide
Thinking of planning a loft conversion? Our comprehensive guide covers everything form planning permission to choosing the right type of conversion for you home.
1. Types of lofts explained
2. Planning & Building Regulations
3. Costings & Timelines
4. Design Inspiration Gallery
Built to Last, Guaranteed
Every Project we undertake is backed by comprehensive warranties and our unwavering commitment to quality.
"County Renovations transformed our dated bungalow into a stunning contemporary home. Their attention to detail is second to none. "
