Cellar and Basement Conversions

Add value to your home for less than you may expect…

Converting and extending an existing basement or cellar can provide valuable extra living space without drastically altering the exterior structure of your home.

A basement conversion could also include its own external entrance and provide a self-contained living space, ideal for use as a home office, annexe, or rented accommodation.

Converting a damp cellar or basement can be a surprisingly inexpensive way of increasing living space and can substantially increase the value of a property and can be converted into kitchens, bathrooms, wine cellars, living rooms, studies etc.

Planning Permission

Converting an existing cellar beneath a dwelling from a storage area to habitable space involves only a ‘change of use’ and so does not require planning permission.

Reducing the floor level of a cellar to improve the ceiling height will enlarge the volume of the property and is therefore treated as an extension and so may need planning permission.

Under certain circumstances, however, modest extensions and alterations can be undertaken without the need to make a planning application under what are known as Permitted Development rights.

Their are two main types of system for waterproofing existing cellars and basements.

Cementitious Waterproofing Slurries

A multi-coat waterproofing system that is both durable and versatile. The specialist coating material is a cement-based powder which is mixed with water and applied to walls, floors, and ceilings by spray or trowel. It sets to form a bond with the masonry substrate, creating an impervoius barrier to the movement of water.

Studded Membranes

The membrane is sealed to walls and ceilings by means of special sealed fixing plugs, whilst on the floor there is normally no need for any form of fixing.

Oldroyd Xv can be covered with plasterboard (using timber battens or the Fastframe Drylining System), screed, or a floating timber floor. A drainage facility, incorporating a sump and a pump, will need to be included as part of the system. The Aquadrain perimeter drainage channel may also be used to provide additional drainage at the wall-floor junction.

Combination Systems

The best solution is often a combination of these two systems but we will advise the best solution with your budget in mind.