Top tips to consider for your cellar conversion

One effective method to create more space in your home is to convert an existing cellar. This will create the much desired extra room without the hassle of moving home. Arc Design Services has detailed top tips for you to consider if you want to convert your cellar

Does a cellar conversion make financial sense?

This depends on the property values in your neighbourhood. In high-value areas, where space and land is restrictive, this almost always makes sense. In other, less densely populated areas, it would be advisable to undertake careful analysis.

Real estate agents ought to be able to give you the value of the per square metre costs where you live, which ought to give you an indication of the saleable value and it’s common sense that a well-designed converted cellar has more value than a dark, damp cellar. However, bear in the mind the maximum value for properties in your area, most suburban locations do have a housing price cap.

How does a cellar conversion cost compare to a loft conversion?

If the cellar conversion if straightforward, without any complications, then the costs are similar to a loft conversion, where as creating a cellar from scratch is around double the price per m².

It may be worth noting that a cellar conversion usually creates more liveable floor space, which adds to the quality of living in the property.

Do I need planning permission to convert my cellar?

No. If you convert an existing cellar you don’t need any planning permission. This will be covered by your home’s Permitted Development unless you are in a Conservation Area, or your home is listed or is in a special designated area.

However, if you need to increase the ceiling height in your cellar and therefore need to reduce the floor level, this may be considered as an extension, in which case planning permission is required. It would be advisable to consult with an architectural designer such as Arc Design Services for further advice to find out exactly what legalities are required.

What are the building regulations for cellar conversions?

Converting your cellar into a habitable space will require building regulations approval. These will ensure that minimum construction standards are adhered to for safety, hygiene and energy efficiency. If a cellar is already habitable and just in need of a general renovation that this will not be required. Again, architectural designers, including Arc Design Services, will be able to provide you professional advice on what is required, as well as designing the maximum use of space for your cellar.

How long will the conversion take?

A straightforward cellar conversion could be completed in a just a few weeks. Depending on the complexity of the project, it could just take two or three weeks, however, more complex conversions would, of course, take longer.

Do I need to move out?

This depends on the access onto your garden or road to remove unwanted materials and waste. If you have direct access you probably can carry on living in your home, however, if the ground floor needs to be reconstructed, you will more than likely have to move out.

Waterproofing your cellar

You will have to ensure that your new living space is dry. There are several methods available to waterproof your home below ground level. Ask your architectural designer on their recommendation for the best guidance.

or more information on Arc Design Services please visit or call 0161 928 4433.

26a Victoria Road, Hale
Altrincham, Cheshire, WA15 9AD
United Kingdom