Before starting a project, it’s crucial to be aware of the planning regulations and potential expenses. Basement extensions can be a terrific way to increase your home’s value and living space, however, it’s important to have a good idea beforehand of the type of spaces you’d like to gain from the extension.

Basement extensions generally require planning permission, just like any other type of home extension. However, the rules for basement extensions can vary depending on the local authority in which you live. Some local authorities have specific policies in place for basement extensions, whilst others may treat them like any other type of extension. Before starting any building work, consult Wish Architects and we will be able to guide you on the likelihood of securing approval for your scheme.

There are a few different types of planning permission that may be required for a basement extension, depending on the scope of the project. If the extension is going to be used for additional living space, such as a bedroom or home office, then you’ll likely need full planning permission. If the extension is going to be used for storage or utility purposes only, you may be able to apply for a certificate of lawfulness, which allows you to proceed with the work without full planning permission.

As far as costs go, basement extensions can be expensive due to the nature of the work. Excavating a basement involves digging down into the ground, which can be a complex and labour-intensive process. You’ll also need to factor in the cost of any structural work that needs to be done, as well as the cost of any fixtures and fittings you want to include in the new space.

In general, you can expect to pay anywhere from £50,000 to £100,000 for a basement extension, depending on the size of the space and the extent of the work needed. This is of course just a rough estimate, and the actual cost will depend on a variety of factors, including the location of your home, the local construction market, and the materials you choose to use.

So, why extend downwards? Well, there are a whole range of different uses for the basement extension once it’s completed so we’ve compiled a list:

• Home office: With more and more people working from home these days, a basement extension can be a great place to set up a home office. It can be a quiet and private space to get work done, away from the distractions of the rest of the house. 

• Extra bedroom/s: If you have a growing family or frequently host overnight guests, a basement extension can be a good way to add an extra bedroom (or two!) to your home. Wish Architects take great care to design in accordance with local legislation, ensuring the space gets enough natural light and ventilation.

• Playroom: If you have young children, a basement extension can be a great place for them to play and let off steam. You can even include features like a climbing wall or a small trampoline to make it a fun and interactive space.

• Home gym: If you’re into fitness, a basement extension can be a great place to set up a home gym. It can be a convenient and private place to work out, and you won’t have to worry about disturbing anyone else in the house.

• Cinema/Media room: If you love movies and TV, a basement extension can be the perfect place to set up a Cinema/Media room. You can install a projector screen or big screen TV, along with a surround sound system and comfortable seating in order to make it a cosy and relaxing space to watch your favourite shows.

A basement extension is a brilliant way to add extra living space and value to your home but it’s important to be aware of the planning legislation and potential costs before proceeding with the project. Wish Architects are skilled in all avenues of construction and design so we would be glad to guide you through the process.