The Ultimate Guide to House Extensions in Hounslow

Are you looking to add more space to your home in Hounslow? A house extension is one of the best ways to increase your property’s value, improve functionality, and create additional living space without moving. At SY Design Studio, we specialize in architectural design, planning permission, and construction drawings to help homeowners achieve their dream extensions. In this guide, we will cover everything you need to know about house extensions in Hounslow, from planning requirements to design ideas and cost considerations.

1. Benefits of a House Extension

Expanding your home comes with multiple advantages, including:

• Increased Property Value – A well-designed extension can significantly boost resale value.

• More Living Space – Ideal for growing families, home offices, or open-plan living areas.

• Avoiding the Cost of Moving – Stay in your current neighborhood while upgrading your home.

• Custom Design Flexibility – Tailor the extension to match your exact needs and style.

2. Types of House Extensions in Hounslow

Depending on your space and budget, different extension types can be considered:

Rear Extensions

• Extends the house into the garden

• Perfect for kitchen expansions or open-plan living spaces

• Requires planning permission depending on size

Side Return Extensions

• Utilizes the narrow passage along the side of the house

• Ideal for semi-detached and terraced homes

• Can be done under permitted development rights

Wraparound Extensions

• A combination of rear and side extensions

• Creates a large, open-plan area

• Typically requires planning approval

Double-Storey Extensions

• Adds extra rooms on both floors

• Significantly increases property value

• Requires building regulations approval

Loft Conversions

• Utilizes unused attic space for bedrooms, offices, or playrooms

• Usually falls under permitted development but may need approval in conservation areas

3. Do You Need Planning Permission for a House Extension in Hounslow?

Many house extensions in Hounslow can be built under permitted development (PD) rights, meaning you may not need full planning permission. However, some key rules apply: ✅ The extension must not exceed 50% of the land around the house ✅ Rear extensions should not exceed 4 meters for detached homes or 3 meters for others ✅ Side extensions should not be wider than half the original house ✅ Double-storey extensions must not block light for neighbors

For larger projects, or if your property is in a conservation area, a full planning application will be required. At SY Design Studio, we assist homeowners in preparing and submitting planning applications in Hounslow to ensure smooth approvals.

4. How Much Does a House Extension Cost?

The cost of an extension varies based on size, design, and materials. Here’s a general guide:

• Small single-storey extension (20m²) – £30,000 - £50,000

• Medium single-storey extension (30m² - 40m²) – £50,000 - £80,000

• Double-storey extension – £80,000 - £150,000+

• Loft conversions – £40,000 - £70,000

Costs may also include:

• Architectural drawings (£1,500 - £3,000)

• Planning application fees (£250 - £500)

• Structural engineer calculations (£800 - £1,500)

For an accurate estimate, we recommend booking a consultation with our team at SY Design Studio.

5. How SY Design Studio Can Help

At SY Design Studio, we provide a full range of architectural services for house extensions in Hounslow, including: ✔ Initial Consultation & Feasibility Studies ✔ Architectural Drawings & 3D Visualizations ✔ Planning Permission Applications ✔ Building Regulations Approval ✔ Project Management Support

Conclusion

A house extension is a fantastic way to create more space, improve your home’s functionality, and add value to your property. However, navigating planning permission, design options, and budgeting can be complex. That’s where SY Design Studio comes in! Our team of expert architects in Hounslow will guide you through every step of the process to make your house extension a success.

📞 Contact us today for a free consultation and let’s start planning your dream extension! 🚀

🔹 Expert House Extension Architects in Hounslow

🔹 Planning Permission & Building Regulations Specialists

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