Homeowners across the UK are increasingly turning to garden room house extensions to create more usable living space. These versatile extensions bring the outdoors closer, offering a light-filled, functional, and aesthetically pleasing addition to any home. But the big question on everyone’s mind is: How much does a house garden room extension cost?
What is a Garden Room House Extension?
A garden room house extension is an additional structure attached to your home. Unlike standalone garden rooms, which are separate from the main house, a garden room extension is integrated into the existing structure. They are designed to provide extra living space while blending seamlessly with your home’s architecture.
Types of Garden Room Extensions
Garden room extensions come in various styles, each catering to different preferences and budgets. Some popular options include:
- Conservatories: Glass-heavy structures that let in ample sunlight. They are typically more affordable but can be less insulated.
- Orangeries: A hybrid between conservatories and traditional extensions, featuring more brickwork and better insulation.
- Bespoke Garden Rooms: Custom-designed extensions tailored to your specific needs, offering the most flexibility in design and materials.
Why Choose a Garden Room Extension?
There are plenty of reasons why homeowners opt for a garden room extension:
- Extra Living Space: Whether you need a home office, gym, or playroom, garden rooms are a cost-effective way to add space.
- Natural Light: Large windows and glass doors allow for an abundance of natural light, creating a bright and inviting atmosphere.
- Increase in Property Value: Adding a well-designed garden room can enhance the resale value of your home.
- Connection to Nature: These spaces create a seamless transition between indoor and outdoor living.
Factors Influencing the Cost of a Garden Room Extension
The cost of a garden room extension can vary significantly depending on several factors. Let’s break these down:
Size and Square Footage
The larger the garden room, the more materials and labor will be required. Typically, costs are calculated per square meter, with basic garden rooms starting at £1,500 per m² and premium designs exceeding £1,800 per m².
You may also read (burning garden waste at home).
Style and Complexity of Design
A simple conservatory will cost less than a fully bespoke garden room with intricate details. Orangeries, for example, require more structural work and insulation, which increases the overall cost.
Materials
The choice of materials has a significant impact on costs. Here’s a breakdown of common materials:
- Timber: Eco-friendly and stylish but can be pricier.
- Brick: Durable and integrates well with traditional homes.
- Glass: Essential for natural light but can drive up costs, especially if you choose double or triple glazing.
- Insulation: High-quality insulation is crucial for year-round comfort and usability.
Location and Labor Costs
Labor costs can vary widely across the UK. For example:
- London and the South East: Higher labor costs due to demand.
- Northern regions: Lower average labor costs.
Planning Permission and Building Regulations
Some garden room extensions require planning permission and must comply with building regulations, which adds to the overall cost.
Additional Features and Finishes
Optional extras, such as underfloor heating, premium flooring, smart lighting, and bi-fold doors, can significantly increase the total cost.
Professional Fees
Architects, designers, and contractors charge fees for their expertise, which should be factored into your budget.
Average Cost Breakdown of Garden Room Extensions in the UK
To give you a clearer idea of what to expect, here’s a breakdown of the average costs:
Type of Garden RoomCost Range
Conservatory Garden Rooms £10,250 to £16,750
Orangery Garden Rooms £30,000 to £35,000
Bespoke Garden Rooms £35,000+ (depending on design)
Cost Per Square Metre
- Basic Build: £1,500 per m²
- Standard Build: £1,800 per m²
- Premium Build: £2,000+ per m²
For comparison, a traditional house extension costs between £48,000 and £72,000 for a 20-30m² space, making garden room extensions a more affordable option.
You may also read (how can i insulate my flat house roof from inside).
Detailed Cost Components
Here’s a closer look at the various components that make up the cost:
Construction and Materials
The base structure, which includes walls, roofing, and foundations, accounts for the largest portion of the cost.
Windows, Doors, and Glazing
- Double-glazed windows: Essential for energy efficiency.
- Bi-fold doors: A stylish but costly addition.
Insulation and Energy Efficiency
Proper insulation keeps your garden room warm in winter and cool in summer, allowing for year-round use.
Interior Finishes and Fittings
From flooring to paintwork, the interior finishes can vary widely depending on your taste and budget.
Heating and Electrical Installations
Adding heating, such as underfloor heating or radiators, and electrical features, like lighting and sockets, requires additional planning and costs.
Landscaping and External Works
Don’t forget to budget for landscaping around your garden room or creating a seamless outdoor space.
Garden Room Extensions vs Traditional House Extensions: Cost Comparison
While traditional house extensions can provide more space, garden room extensions are often a more cost-effective option. Here are some key differences:
Aspect Garden Room Extension Traditional Extension
Cost per m² £1,500 to £2,000 £1,600 to £2,500
Construction Timeframe: 4-8 weeks 12-24 weeks
Disruption to Home Minimal Significant
Return on Investment High High
How to Budget for Your Garden Room Extension
Creating a realistic budget is essential. Here are some tips:
- Set a Clear Budget: Determine a maximum spend and adhere to it.
- Plan for Contingencies: Set aside 10-15% of your budget for unexpected costs.
- Prioritize Features: Decide which features are essential and which are optional.
Financing Your Garden Room Extension
If you’re wondering how to fund your garden room extension, here are some options:
- Personal Loans: Quick and straightforward but may come with higher interest rates.
- Remortgaging: Allows you to borrow against your property value.
- Savings: Ideal if you want to avoid debt.
Tips for Getting Accurate Quotes and Choosing Contractors
Follow these steps to find the right contractor for your project:
- Get Multiple Quotes: Compare at least three quotes to get a competitive price.
- Check Credentials: Ensure the contractor is licensed and insured.
- Read Reviews: Look for testimonials and online reviews to gain insight into the product’s quality.
- Ask Questions: Clarify timelines, warranties, and payment schedules.
You may also read (elevate your home with a beautiful garden gate).
