Conservatory Extensions in Essex
Need more space but don’t want the disruption of a full extension? A conservatory extension adds light, comfort, and value, giving you a beautiful, year-round living area that blends your home and garden.
Book your free conservatory design consultation today.
More living space
Perfect for dining, entertaining, or simply relaxing in natural light.
Energy-efficient
Modern glazing and insulation make our conservatories comfortable in every season.
Adds value
Professionally built conservatories can increase your home’s value by up to 15%.
What is a Conservatory Extension
A conservatory extension is a versatile and cost-effective way to expand your home while flooding it with natural light. Blending glass, brick, and modern insulation, conservatories create bright, usable spaces perfect for dining, relaxing, or entertaining.
At KNR Group, we design and build bespoke conservatory extensions across London, Essex, and Hertfordshire, combining traditional craftsmanship with the latest materials for comfort all year round.
Whether you’re after a classic Victorian conservatory, a modern glass structure, or a solid-roofed orangery, our experienced team will tailor the design to your property and lifestyle.
Why Choose KNR Group for Conservatory Extensions
With over 30 years of construction experience, KNR Group specialises in designing and building custom conservatory extensions in London and Essex. Our team manages everything — from design and planning to the build and final finishes — so you can enjoy the transformation without the stress.
- Experienced in both contemporary and traditional conservatory designs
- Fully compliant with building regulations and energy efficiency standards
- In-house project management and trusted local trades
- Transparent pricing with detailed quotes and timelines
Contact KNR Group today to book your free site survey and consultation.
Types of House Extensions
Our Process
Consultation and Site Survey
We assess your property, discuss your goals, and outline potential layouts.
Architectural Design
Tailored designs that meet your space, budget, and style preferences.
Planning and Building Control
KNR Group manages all permissions, drawings and compliance paperwork.
Construction
Managed by qualified professionals, ensuring precision, safety, and efficiency.
Completion
Every project is signed off with final inspections, certification, and warranties, ready for occupancy or sale.
Project Timelines
A conservatory extension typically takes 6–10 weeks to complete, depending on complexity and materials.
We coordinate all stages, from foundation work to final finishing, ensuring your project runs smoothly and on schedule.
Cost of a Conservatory Extension
Costs vary based on size, materials, and roof type. Below are typical guide prices:
| Type | Average Cost |
| uPVC Conservatory | £25,000 – £40,000 |
| Glass or Hybrid Conservatory | £35,000 – £55,000 |
| Orangery or Solid Roof Conservatory | £45,000 – £70,000 |
All prices include design, project management, and construction. KNR Group provides itemised, transparent quotes — so you always know what to expect.
Planning Permission for Conservatory Extensions
Most conservatory extensions in Essex and London fall under permitted development rights, meaning planning permission isn’t always required if:
- The conservatory doesn’t extend more than 3 metres (terraced) or 4 metres (detached) beyond the rear wall.
- The structure is no higher than 4 metres.
- No more than 50% of your garden area is covered.
For listed buildings, conservation areas, or larger extensions, planning approval is required. KNR Group manages the process from design through to submission, ensuring full compliance with all regulations.
FAQs – Conservatory Extensions
How much does a conservatory extension cost in Essex?
A conservatory extension in Essex costs between £25,000 and £55,000, depending on materials, roof type, and size. KNR Group provides tailored quotes to match your design and budget.
Do I need planning permission for a conservatory in London?
Most conservatory extensions in London fall under permitted development, but listed properties or conservation areas require permission. KNR Group manages all applications for you.
Can a conservatory be used all year round?
Yes — with modern insulation, double glazing, and tiled or hybrid roofs, KNR Group builds conservatories that stay warm in winter and cool in summer.
How long does a conservatory extension take to build?
Most conservatories take 6–10 weeks from start to finish, depending on complexity and weather.
Will a conservatory extension add value to my home?
A well-built conservatory can add up to 15% to your property value, especially when designed to complement the style of your home.
Why Choose KNR Group
- Local expertise – Decades of experience designing and building in London, Essex, and Hertfordshire.
- End-to-end service – From consultation and planning to final build, we manage everything.
- Quality guaranteed – Premium materials and skilled trades for long-lasting results.
Book your free design consultation today and discover how a KNR conservatory extension can transform your home.
We'd love to hear from you and discuss your project
House Extensions & Renovation Projects
Client testimonials
Video Testimonial
This rear extension showcases KNR Group’s ability to deliver a smooth, well-managed build from start to finish. With clear communication and quality craftsmanship throughout, the result is a bright, open space that’s transformed how the homeowner lives day to day.
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Ready to add a bespoke single-storey to your home?
Contact KNR Group today for a free consultation and quote.
Call us or request a callback, let’s create the perfect single-storey space together.