Under Garden Basements

Under Garden Basements – Expanding Space Below Your Property

In London, where space is limited and property values are high, many homeowners are turning to under garden basements to create new living areas without altering the look of their home. At Delta Force Basements, we specialise in designing and building strong, waterproof, and fully usable basements beneath gardens, patios, and outdoor spaces.

Why Choose an Under-Garden Basement?

An under-garden basement allows you to increase living space without extending upward or outward. It can be used for a wide range of purposes such as:

• Extra bedrooms or guest suites

• Home gyms and wellness spaces

• Cinema and entertainment rooms

• Playrooms or hobby areas

• Secure storage

Because the basement is built beneath the garden, the property exterior often remains unchanged, making it an ideal solution in areas where planning restrictions apply.

Our Approach

We combine reinforced concrete, underpinning, and advanced waterproofing systems to ensure every under garden basement is both strong and dry. Our installations include Delta membrane systems, sump pumps, and drainage channels for reliable, long-term protection against water ingress.

Every project is tailored to your site, with careful planning around soil type, foundations, and drainage requirements. We deliver the basement as a waterproof shell, ready for fit-out by your chosen contractors.

Benefits of Under-Garden Basements

• Maximises property value in London’s competitive market

• Creates a flexible living space without altering your home’s appearance

• Fully waterproofed for long-term use

• Adds usable square footage in restricted urban areas

• Customised to suit your lifestyle and design preferences

Why Work with Delta Force Basements?

We are specialists in basement construction, underpinning, waterproofing, and groundworks. With years of experience across London, we deliver high-quality under-garden basements that transform outdoor areas into valuable, functional living spaces.

If you are considering expanding your property, contact Delta Force Basements today to discuss your under-garden basement project and receive a tailored quotation.