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Basement / Cellar Conversions in Leiston (9)

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  • J Vale Carpentry and General Builder Logo

    J Vale Carpentry and General Builder

    9.71

    (52 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    General Building
    Concreting
    Building Merchants
    Call
  • HomeFix Logo

    HomeFix

    9.80

    (29 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Loft Conversions
    Extensions / Conversions
    Garage Conversions
    Call
  • RHR Building Services Limited Logo

    RHR Building Services Limited

    10.00

    (68 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Structural Steels
    Core Drilling
    Wall Tie Replacements
    Call
  • Artisan Renovations (Norfolk) LTD Logo

    Artisan Renovations (Norfolk) LTD

    9.67

    (3 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Fire and Flood Renovation
    Garden Studios
    Call
  • NPH London LTD

    (6 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Heritage Property Specialist
    Steel Fabrication
    General Building
    Call
  • Ivor Building & Carpentry Logo

    Ivor Building & Carpentry

    9.50

    (57 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Diamond Drilling
    Repair and Listed Building Specialist
    Garage Conversions
    Call
  • Haynes builders Norfolk ltd Logo

    Haynes builders Norfolk ltd

    9.56

    (3 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Green Oak Framing
    Heritage Property Specialist
    Foundations
    Call
  • MWD Construction Ltd Logo

    MWD Construction Ltd

    10.00

    (19 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concreting
    Wall Tie Replacements
    Warehouse Racking
    Call
  • Rafal Mach Logo

    Rafal Mach

    9.45

    (22 reviews)

    Operates in Leiston

    Services & skills
    Builder
    Basement / Cellar Conversions
    Brick / Concrete Structural Repairs
    Warehouse Racking
    Foundations
    Call

Find Companies for Basement and Cellar Conversions in Leiston

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 Leiston 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 Leiston

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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 Leiston?

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