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Basement / Cellar Conversions in Newcastle (28)

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  • Nesitebuild Limited Logo

    Nesitebuild Limited

    10.00

    (2 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Workshop Design / Construction
    Foundations
    Call
  • Newall Development Group Ltd Logo

    Newall Development Group Ltd

    9.97

    (37 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Mastic Sealant
    Emergency Builder Service
    Repair and Listed Building Specialist
    Call
  • Elite Interiors NE Ltd Logo

    Elite Interiors NE Ltd

    9.97

    (13 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Garden Studios
    Suspended Ceilings
    Call
  • CF Joinery & Bathrooms Ltd

    10.00

    (60 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Fire and Flood Renovation
    Loft Conversions
    Extensions / Conversions
    Call
  • Boltrex Construction Logo

    Boltrex Construction

    10.00

    (3 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Demolition
    Garage Conversions
    Partition Walls
    Call
  • A & P Builders (Newcastle) Limited Logo

    A & P Builders (Newcastle) Limited

    10.00

    (117 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Repair and Listed Building Specialist
    New Builds
    Concreting
    Call
  • North East Construction & Repairs Ltd Logo

    North East Construction & Repairs Ltd

    10.00

    (26 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Suspended Ceilings
    Extensions / Conversions
    Cladding
    Call
  • Inside & Out Property Maintenance Logo

    Inside & Out Property Maintenance

    10.00

    (68 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Steel Fabrication
    Suspended Ceilings
    Fire and Flood Renovation
    Call
  • Complete Construction NE Limited Logo

    Complete Construction NE Limited

    (0 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Agricultural Building
    Project Management
    Wall Tie Replacements
    Call
  • ACE OF TRADES CONSTRUCTION LIMITED Logo

    ACE OF TRADES CONSTRUCTION LIMITED

    10.00

    (4 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Partition Walls
    Agricultural Building
    Sustainable Construction
    Call
  • DM Hilling

    8.76

    (17 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    New Builds
    Fire and Flood Renovation
    Loft Conversions
    Call
  • B D S Building & Joinery (NE) Ltd

    10.00

    (73 reviews)

    Operates in Newcastle upon Tyne

    Services & skills
    Builder
    Basement / Cellar Conversions
    Agricultural Building
    Loft Conversions
    General Building
    Call

Find Companies for Basement and Cellar Conversions in Newcastle Upon Tyne

Dreaming of converting your cellar or basement into a home office, cinema room, or guest bedroom, but unsure about who to hire and how much it will cost?

Checkatrade can help.

Keep reading for everything you need to know about basement and cellar conversions in Newcastle Upon Tyne and how to hire a checked and reviewed tradesperson for the job.

Want to jump straight into it? Try our quick request a quote feature and we’ll put you in touch with experienced basement conversion companies covering your local area.

Average cellar conversion costs in Newcastle Upon Tyne

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Looking for basement excavation prices? Our cost guide to building a basement has all the details.

Top tip: You can also try out our job estimate calculator to get a steer idea on costs for your project.

Do I need planning permission to convert a cellar?

Most cellar conversions don’t need planning permission if you’re converting an existing space.

However, if you’re excavating deeper, changing the external appearance, or creating a new entrance, you’ll likely need permission and Building Regulations approval.

Contact your local authorities as a first port of call.

Is a cellar conversion worth it?

Yes – converting a cellar can add valuable living space and increase the property value. It’s also a great option for homeowners in areas where extending upward or outward isn’t possible.

Basements and cellars are legal in the UK, but the work must comply with UK Building Regulations.

This ensures the conversion meets industry-standard requirements for damp proofing, ventilation, fire safety, and structural safety.

Can you convert a cellar into a bedroom?

Yes - with the right planning and building work, you can convert a cellar into a bedroom, guest suite, or even a self-contained studio.

To meet building regulations, your cellar bedroom will need:

  • Proper ventilation and insulation
  • A safe fire escape route
  • Adequate ceiling height and natural light
  • In some cases, planning permission

These checks aren’t just for comfort - they’re essential if you ever decide to sell your home. A compliant conversion can add value and avoid issues during surveys or legal checks.

Why use Checkatrade?

  • Fully checked contractors covering your local area
  • Insurance always listed
  • Easy to compare multiple profiles
  • Handy reviews from local customers
  • Covered by the Checkatrade Guarantee (T&Cs apply)

Looking for more tradespeople in Newcastle upon Tyne?

Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in Newcastle upon Tyne and check out our latest home improvement guides.