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Basement / Cellar Conversions in Brighton (75)

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  • Sponsored
    Complete Carpentry and Maintenance Ltd Logo

    Complete Carpentry and Maintenance Ltd

    9.00

    (157 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Cladding
    Brick / Concrete Structural Repairs
    Equestrian Stable
    Call
  • M D J Building Logo

    M D J Building

    9.70

    (98 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Fire and Flood Renovation
    Emergency Builder Service
    Call
  • GRF Building & Plastering LTD Logo

    GRF Building & Plastering LTD

    10.00

    (322 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Stretched Ceilings
    Concreting
    Refurbishments
    Call
  • Sinclair & Jones Building Contractors Ltd Logo

    Sinclair & Jones Building Contractors Ltd

    9.73

    (63 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Structural Design
    Foundations
    Emergency Builder Service
    Call
  • Rainbow Building Plumbing & Electrical Logo

    Rainbow Building Plumbing & Electrical

    9.89

    (202 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Partition Walls
    Property Maintenance / Repair
    Call
  • Hi Tech Remedial & Development Limited Logo

    Hi Tech Remedial & Development Limited

    10.00

    (9 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Heritage Property Specialist
    Project Management
    General Building
    Call
  • Wilcox Home Improvements Logo

    Wilcox Home Improvements

    10.00

    (9 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Partition Walls
    Project Management
    Call
  • RGC Construction Service Ltd Logo

    RGC Construction Service Ltd

    9.78

    (13 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Partition Walls
    Insurance Claim Specialist
    New Builds
    Call
  • Middleton&Hewitt Builders Logo

    Middleton&Hewitt Builders

    9.96

    (8 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Property Maintenance / Repair
    Project Management
    Call
  • MB Property Maintenance & Renovations Logo

    MB Property Maintenance & Renovations

    10.00

    (35 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concreting
    Property Maintenance / Repair
    Fire and Flood Renovation
    Call
  • Solid Construction Logo

    Solid Construction

    9.86

    (65 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garage Conversions
    Car Ports
    Wall Tie Replacements
    Call
  • Downsview Logo

    Downsview

    9.78

    (261 reviews)

    Operates in Brighton and Hove

    Services & skills
    Builder
    Basement / Cellar Conversions
    Loft Conversions
    Structural Steels
    Sustainable Construction
    Call

Find Companies for Basement and Cellar Conversions in Brighton And Hove

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 Brighton And Hove 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 Brighton And Hove

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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 Brighton and Hove?

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