Basement Conversions in Gerrards Cross

ADB Construction & Interiors designs and builds basement conversions in Gerrards Cross and the SL9 area. When plots are valuable and planning rules limit what you can add above ground, digging down is often the smartest way to gain serious space. A basement can hold a cinema room, gym, office, wine store or guest suite without changing how your house looks from the street. Below ground work demands specialist engineering and waterproofing, and our team manages all of it as one project. Call 07700 170091 to find out what is possible under your home.

More Information

Space Without Changing the Street Scene

Basement projects rarely face the planning battles that large extensions do, because the house looks the same from outside. For homes near conservation areas or with limited garden space, that makes a basement the most achievable big move available. We advise on whether converting an existing cellar or excavating new space suits your property, and handle any consents required.

Waterproofing Done to Last

A basement is only as good as its waterproofing. We design below ground rooms to recognised waterproofing standards, typically combining a drained cavity membrane system with sump pumps and backup provision. Ventilation, heating and natural light through lightwells are designed in from the start. Our basements in the Gerrards Cross area are dry, warm and pleasant rooms, not damp afterthoughts.

Engineering and Neighbours Handled

Excavating beneath a house is serious structural work. We manage the structural engineering, underpinning design and building control approval, and where party walls are involved we guide you through the party wall process with your neighbours. Work is sequenced carefully, spoil is removed cleanly and the structure above is monitored throughout. It is demanding work, and it is work we plan meticulously.

ABOUT US

ADB Construction & Interiors was founded 6 years ago in the Gerrards Cross area. The idea was simple. Bring designers and builders together in one business so clients stop losing time, money and patience between separate firms. That approach has won us steady work across the SL9 postcode and beyond, from kitchen extensions in Chalfont St Giles to full rebuilds near Stoke Poges. We design it, we build it, and we manage it, all under one roof.

  • Design and build under one roof, one team from start to finish

  • Full project management from drawings to handover

  • 6 years designing and building in Gerrards Cross and the SL9 area

  • Open Monday to Friday 8am to 6pm and Saturday 10am to 4pm

  • Clear written quotes and honest advice on every project

One striking basement project was beneath a family home on the Orchehill side of Gerrards Cross, where the owners wanted a cinema room and gym without sacrificing their garden. We excavated under the rear of the house, formed a lightwell against the back wall and delivered both rooms plus a plant and storage area. Their teenagers now host film nights downstairs while the ground floor stays peaceful, which the parents count as the real win.

Basement conversions Gerrards Cross - cinema room created by ADB Construction & Interiors in SL9

STILL NOT SURE?

Frequently Asked Questions

Do basement conversions in Gerrards Cross need planning permission?

Converting an existing cellar in Gerrards Cross usually needs no planning permission. Excavating a new basement or adding lightwells often does, particularly in conservation areas. ADB Construction & Interiors confirms the position for your property and manages any application needed before work begins.

Are basement conversions in the Gerrards Cross area damp?

Not when built properly. Modern basement conversions in the Gerrards Cross area use drained cavity membrane systems, sump pumps and designed ventilation to keep rooms permanently dry. ADB Construction & Interiors builds to recognised waterproofing standards, so your basement feels like any other room in the house.

How long does a basement conversion take in Gerrards Cross?

Converting an existing cellar in Gerrards Cross typically takes 8 to 12 weeks. Excavating a new basement is a larger project, usually running 4 to 8 months depending on size and ground conditions. We provide a detailed programme with your quote so you know what to expect.

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Address: Building 1 Chalfont Park, Gerrards Cross, UK