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Basement / Cellar Conversions in St Blazey (9)

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  • B Barnes Carpentry and Building Services

    10.00

    (23 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Sustainable Construction
    Heritage Property Specialist
    Call
  • Ben Dowdall Roofing Services Logo

    Ben Dowdall Roofing Services

    (0 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Foundations
    Agricultural Building
    Suspended Ceilings
    Call
  • First Choice Framing Logo

    First Choice Framing

    9.90

    (9 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Cladding
    Garage Conversions
    Partition Walls
    Call
  • Gareth Bilkey Building Contractors Limited Logo

    Gareth Bilkey Building Contractors Limited

    10.00

    (17 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    General Building
    Brick / Concrete Structural Repairs
    Partition Walls
    Call
  • Shoreside Construction Logo

    Shoreside Construction

    10.00

    (12 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concrete Garages
    Sustainable Construction
    Extensions / Conversions
    Call
  • Blue Ocean C S Limited Logo

    Blue Ocean C S Limited

    9.80

    (30 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Heritage Property Specialist
    Refurbishments
    Suspended Ceilings
    Call
  • TF Grills and Sons Ltd

    (0 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concreting
    Car Ports
    Repair and Listed Building Specialist
    Call
  • A Preston Building Services Limited

    10.00

    (4 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Tree Houses
    General Building
    Brick / Concrete Structural Repairs
    Call
  • Oliver group construction limited Logo

    Oliver group construction limited

    10.00

    (27 reviews)

    Operates in St Blazey

    Services & skills
    Builder
    Basement / Cellar Conversions
    Agricultural Building
    Brick / Concrete Structural Repairs
    Cladding
    Call

Find Companies for Basement and Cellar Conversions in St Blazey

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 St Blazey 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 St Blazey

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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 St Blazey?

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