The Complete Guide to House Extensions in Norfolk: Planning, Costs & What to Expect
A house extension is one of the most effective ways to increase space, improve functionality, and add value to your home — without the stress of moving. Whether you're dreaming of a larger kitchen, an extra bedroom, or a full two-storey extension, this guide covers everything homeowners in Norfolk need to know before starting.
Why Build an Extension Instead of Moving?
With rising property prices and the cost of living, many Norfolk homeowners choose to extend instead of relocate. The benefits include:
Creating the exact space you need
Adding significant value to your property
Remaining in the area you love
Avoiding estate agent, legal, and moving costs
A well-built extension typically increases property value by 10–20% depending on the design and location.
Types of House Extensions Popular in Norfolk
1. Single-Storey Rear Extension
Ideal for: kitchen/diner expansions, open-plan family spaces.
Common in: suburban Norwich, coastal towns, and villages.
2. Side Return Extension
Popular in terraced and semi-detached homes.
Ideal for: narrow kitchens or dark internal rooms.
3. Double-Storey Extension
Ideal for: adding both bedroom and living space.
Biggest value increase for your investment.
4. Wrap-Around Extension
Combines rear + side return.
Transforms the whole ground floor dramatically.
5. Garage Conversion or Extension
Cost-effective way to add an office, bedroom, or utility room.
Do You Need Planning Permission in Norfolk?
Not always — many extensions fall under Permitted Development.
However, you will need planning permission if:
The extension is too large for PD rules
It’s a double-storey extension
Your home is listed
You're in a conservation area (common in Norfolk’s historic villages)
A reputable builder can help you understand your options and work with architects or the council when needed.
How Much Does a House Extension Cost in Norfolk?
Costs vary depending on size, materials, and layout, but here is a realistic estimate:
Small single-storey extension: £25,000 – £45,000
Medium kitchen/living extension: £45,000 – £80,000
Large wrap-around extension: £80,000 – £150,000+
Double-storey extension: £65,000 – £150,000+
Internal finishes (kitchens, flooring, glazing) significantly affect the final cost.
How Long Does an Extension Take to Build?
Typical timeline:
Planning & design: 4–10 weeks
Building regulations: 1–4 weeks
Construction:
Single-storey: 8–12 weeks
Double-storey: 12–20 weeks
Wrap-around: 14–24 weeks
Weather, material lead times, and structural changes may extend the timeline slightly.
What to Expect During the Build
A good builder will manage the entire process, including:
Groundworks and foundations
Brickwork and structural steel
Roofing and insulation
Plumbing, electrics, and heating
Windows, doors, and glazing
Plastering, flooring, and final finishes
Clear communication and regular updates are essential for a smooth project.
How to Choose the Right Builder for Your Extension
Look for a builder who:
Has experience with extensions
Provides clear, written quotes
Can show recent local projects
Is fully insured
Knows Norfolk planning requirements
Avoid choosing the cheapest quote — quality workmanship saves money long-term.
Final Thoughts
A house extension is a major investment, but with the right builder, it can completely transform your home and lifestyle. By understanding planning, costs, and the construction process, you’ll be better prepared to make confident decisions.
Call to Action
Thinking about an extension in Norfolk?
Reeve & Son Construction specialise in high-quality extensions with reliable communication and honest pricing.
Contact us today to discuss your project.