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14 Best House Extension Ideas to Add More Space to Your Home

Writer: DSB8 TeamDSB8 Team

Expanding your home is a fantastic way to create additional living space without moving. Whether you want to add a new room, enhance your kitchen, or create a more open-plan living area, house extensions offer endless possibilities. This article explores 14 of the best house extension ideas to help you maximize your home's potential, focusing on popular options in London.


House extension in london


Rear Extensions

Rear extensions are popular for homeowners looking to add space at the back of their property. These extensions range from small kitchen additions to full-width extensions that transform your living space.


Advantages:

  • Enhances connection to the garden

  • Adds significant living space

  • Can incorporate large windows or sliding doors for more light


Disadvantages:

  • It may require planning permission

  • Can reduce garden space


Contemporary Rear Extensions

Contemporary rear extensions offer a modern twist on traditional rear extensions. They often feature sleek designs, large glass panels, and minimalistic aesthetics.


Advantages:

  • Creates a modern, stylish living space

  • Maximises natural light with glass elements

  • Increases property value

Disadvantages:

  • Higher cost due to premium materials

  • Requires careful design to blend with existing structure


House extension in london


Side Return Extensions

Side return extensions utilize the narrow strip of land alongside many Victorian and Edwardian houses in London. This type of extension can dramatically increase the usable space in your home without taking up garden space.


Advantages:

  • Efficient use of otherwise wasted space

  • Creates a more open and spacious kitchen or living area

  • This can often be done under permitted development rights


Disadvantages:

  • Narrow space can limit design options

  • Requires good planning to ensure adequate light and ventilation


Narrow Side Return Extensions

A narrow side return extension is ideal for properties with limited space. It allows you to optimize even the most restricted areas carefully and innovatively.


Advantages:

  • Makes use of narrow, unused spaces

  • It can open up and brighten your home

  • Often cheaper than more significant extensions


Disadvantages:

  • Limited space can restrict functionality

  • It may require creative solutions for lighting and ventilation


Wrap-Around Extensions

Wrap-around extensions combine a side return and rear extension to create an ample, L-shaped space. This type of extension offers extensive additional space and can significantly alter the layout of your home.


Advantages:

  • Provides substantial additional living space

  • Ideal for creating open-plan kitchen and dining areas

  • Can add significant value to your home


Disadvantages:

  • Higher cost due to extensive work

  • Requires careful planning and design


Two-Storey Extensions

A two-storey extension doubles the benefits of a single-storey extension by adding space on two levels. This type of extension is perfect for adding extra bedrooms and bathrooms.


Advantages:

  • Maximises space without taking up more garden area

  • Can significantly increase property value

  • Ideal for growing families


Disadvantages:

  • Requires planning permission

  • Higher cost and longer construction time


Conservatories

Conservatories are a classic way to add space and bring more light into your home. Modern conservatories can be designed to be used year-round, with improved insulation and heating options.


Advantages:

  • Bright and airy space

  • Can often be built without planning permission

  • Adds a versatile room to your home


Disadvantages:

  • It can become uncomfortably warm in the summer and chilly in the winter if insulation is inadequate.

  • Requires regular maintenance


House extension in london

Orangeries

Orangeries offer a more substantial alternative to conservatories. They are made of brick and glass, providing better insulation and a more permanent feel.


Advantages:

  • More solid structure than a conservatory

  • It can be used year-round

  • Adds a luxurious, elegant space


Disadvantages:

  • Higher cost than a conservatory

  • It may require planning permission


Loft Conversions

A loft conversion is a great way to add an extra bedroom, office, or playroom without altering the footprint of your home. This extension type uses existing space and can be less disruptive than other extensions.


Advantages:

  • Utilises existing space

  • This can be done under permitted development rights

  • Adds significant value to your home


Disadvantages:

  • Limited by existing roof height and structure

  • Requires adequate insulation and ventilation


Basement Conversions

Basement conversions are an excellent option for properties with limited outdoor space. You can create additional living space by converting the basement, such as a guest room, gym, or home cinema.


Advantages:

  • Makes use of existing space

  • Adds substantial living area

  • It can be designed for various uses


Disadvantages:

  • High cost due to extensive work required

  • Requires good waterproofing and ventilation


House extension in london

Garage Conversions

A garage conversion transforms an existing garage into a habitable space. This type of extension is often more affordable than building a new structure.


Advantages:

  • Utilises existing structure

  • Can be cost-effective

  • Adds useful living space


Disadvantages:

  • Limited by the size and location of the garage

  • It may require planning permission for changes to the exterior


Garden Rooms

Garden rooms are standalone structures built in the garden. They provide additional living or working space separate from the main house. They can be used as home offices, studios, or guest rooms.

Advantages:

  • Provides a quiet, separate space

  • Can often be built without planning permission

  • Versatile usage options


Disadvantages:

  • Takes up garden space

  • Requires good insulation and heating for year-round use


Mezzanine Floors

Adding a mezzanine floor can create additional space within existing high-ceiling rooms. This type of extension is ideal for creating extra bedrooms or office spaces.


Advantages:

  • Utilises vertical space

  • Adds a unique architectural feature

  • It can be relatively inexpensive


Disadvantages:

  • Limited by ceiling height

  • It may require structural changes


Rear Dormer Extensions

A rear dormer extension is a type of loft conversion that adds space to the rear of the property, creating additional headroom and floor space.


Advantages:

  • Adds significant space and light

  • Ideal for creating large, open-plan rooms

  • This can be done under permitted development rights


Disadvantages:

  • Requires planning and design to blend with existing structure

  • May reduce garden space


Conclusion

Adding an extension to your home is a fantastic way to increase your living space and enhance your property's value. There are numerous options, from rear extensions and side returns to loft and basement conversions, to suit different needs and budgets. 

By carefully considering the available space, your home's structure, and your specific requirements, you can choose the best extension type to transform your living environment.


House extension in london


How DSB8 Can Help You with Side House Extensions Services in London

DSB8 is a leading specialist in house extensions in London, offering bespoke solutions to transform your living space. Whether you're considering a narrow-side return extension, a contemporary rear extension, or a more complex project, Our experienced team will support you through every project phase.

With our extensive experience and commitment to quality, we ensure your extension not only meets but exceeds your expectations. Contact us today to explore your extension options and begin transforming your home into a more spacious and stunning living environment.


FAQs

Q. Do I need planning permission for a house extension in London?

It depends on the type and size of the extension. Some extensions can be done under permitted development rights, while others may require planning permission.


Q. How long does a house extension take to complete?

The timeline depends on the type and intricacy of the extension project. Typically, it can range from 8 weeks to several months.


Q. How much does a house extension cost in London?

Costs vary widely depending on the type of extension, materials used, and other factors. Simple extensions can start from £20,000, while more complex projects can exceed £100,000.


Q. Can I live in my home during the extension work?

Indeed, but the feasibility largely depends on the scope of the project.

Some projects may require you to relocate temporarily for safety and convenience.


Q. How can I maximize natural light in my house extension?

Incorporate large windows, skylights, and glass doors into the design. Open-plan layouts and light colours can also help enhance natural light.


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