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Basement / Cellar Conversions in Blaenavon (10)

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  • Mint Construction & Maintenance Ltd Logo

    Mint Construction & Maintenance Ltd

    9.90

    (27 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concrete Garages
    Warehouse Racking
    Equestrian Stable
    Call
  • C N C Renovations Logo

    C N C Renovations

    9.93

    (32 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    New Builds
    General Building
    Insurance Claim Specialist
    Call
  • LMB Construction (SW) Limited Logo

    LMB Construction (SW) Limited

    (12 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Refurbishments
    Extensions / Conversions
    Concrete Garages
    Call
  • Probert and Mumford Logo

    Probert and Mumford

    9.50

    (32 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Stretched Ceilings
    New Builds
    Diamond Drilling
    Call
  • R & D Plasterers Ltd Logo

    R & D Plasterers Ltd

    (6 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Partition Walls
    Concrete Garages
    New Builds
    Call
  • ADS Carpentry and Building Services

    9.77

    (58 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Garage Conversions
    Cladding
    Call
  • Orange Stone Construction Logo

    Orange Stone Construction

    10.00

    (2 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Partition Walls
    Structural Steels
    Loft Conversions
    Call
  • Apex Carpentry And Building Ltd Logo

    Apex Carpentry And Building Ltd

    10.00

    (10 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Foundations
    Sustainable Construction
    Warehouse Racking
    Call
  • Hawkesford Construction Ltd Logo

    Hawkesford Construction Ltd

    (47 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Wall Tie Replacements
    Sustainable Construction
    Brick / Concrete Structural Repairs
    Call
  • NPT CONSTRUCTION LTD Logo

    NPT CONSTRUCTION LTD

    10.00

    (8 reviews)

    Operates in Blaenavon

    Services & skills
    Builder
    Basement / Cellar Conversions
    Suspended Ceilings
    Wall Tie Replacements
    Demolition
    Call

Find Companies for Basement and Cellar Conversions in Blaenavon

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 Blaenavon 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 Blaenavon

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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 Blaenavon?

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