Basement and cellar conversions · Greenock

Basement and cellar conversions in Greenock

Our basement and cellar conversions service covers Greenock and the rest of Renfrewshire and Inverclyde. You get a fixed price in writing for the agreed specification, and one person co-ordinating the trades.

Covering Greenock

Our coverage around Greenock (PA15, PA16) also includes Vale of Leven (7 miles to the east) and Largs.

Homes in Renfrewshire and Inverclyde

In Scotland many families extend bungalows and semis, while tenement flats bring shared ownership of roofs and walls that needs agreeing early.

What does a basement conversion involve?

A basement conversion turns an existing cellar into dry, usable rooms, or excavates a new basement under a house. Converting an existing cellar is far simpler and cheaper than digging a new one, and often does not need planning permission.

  • Waterproofing design and installation
  • Ventilation, heating and electrics
  • Finished floors, walls and ceilings

What is the guide price for a basement conversion in Greenock?

Use these ranges to budget for basement and cellar conversions; the survey turns them into a fixed price for the agreed specification.

Basement and cellar conversionsGuide price incl. VAT
Existing cellar conversion£1,900 to £3,000 per m²
New basement excavation£4,200 to £6,600 per m²

Planning and building rules in Greenock

Projects in Scotland need a building warrant from the council before any building work starts, and a completion certificate once it is finished. Planning permission is a separate decision. The Party Wall etc. Act does not apply in Scotland; shared walls are governed by title deeds and the law of the tenement where relevant.

In Scotland new basements and external lightwells normally need planning permission; all basement work needs a building warrant first.

What should I think about before starting?

  • A pump for the drainage system needs a battery back-up.
  • Headroom of about 2.1 m or more is needed, which may mean lowering the floor.

From first call to completion

  1. Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
  2. Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
  3. Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
  4. Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Your questions answered

Does a cellar conversion need planning permission?

Usually not if nothing changes outside. New basements and lightwells often do.

How do you keep a basement dry?

With a designed waterproofing system, usually a cavity drain membrane draining to a pump, sometimes combined with tanking.

Do you work in Greenock?

Yes. Greenock is within our coverage for basement and cellar conversions, along with nearby Vale of Leven and Largs.

Basement and cellar conversions near Greenock

Learn more about basement and cellar conversions, or see every project we cover in Greenock.

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