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Basement / Cellar Conversions in Lancashire (14)

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  • RT Builders Logo

    RT Builders

    9.92

    (4 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Suspended Ceilings
    Agricultural Building
    Workshop Design / Construction
    Call
  • Comurph Construction LTD Logo

    Comurph Construction LTD

    10.00

    (4 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    New Builds
    Refurbishments
    Extensions / Conversions
    Call
  • LT Builders Logo

    LT Builders

    9.71

    (79 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Workshop Design / Construction
    Concrete Garages
    Call
  • Services & skills
    Builder
    Basement / Cellar Conversions
    Concreting
    Equestrian Stable
    Period Property Restoration
    Call
  • YESSS HOME IMPROVEMENTS Logo

    YESSS HOME IMPROVEMENTS

    9.87

    (151 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Car Ports
    Demolition
    Sustainable Construction
    Call
  • Jpm Building & Joinery Services Limited Logo

    Jpm Building & Joinery Services Limited

    9.86

    (7 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concreting
    Cladding
    Suspended Ceilings
    Call
  • Bespoke Home & Build LTD Logo

    Bespoke Home & Build LTD

    10.00

    (45 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Agricultural Building
    General Building
    Partition Walls
    Call
  • RJM Spraying Services & Building Logo

    RJM Spraying Services & Building

    (7 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Agricultural Building
    Warehouse Racking
    Refurbishments
    Call
  • Gkb Design & Build Limited Logo

    Gkb Design & Build Limited

    (0 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Workshop Design / Construction
    Property Maintenance / Repair
    Extensions / Conversions
    Call
  • C&M Building & Maintenance Logo

    C&M Building & Maintenance

    (0 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Equestrian Stable
    Core Drilling
    Garage Conversions
    Call
  • Omega Construction Group ltd Logo

    Omega Construction Group ltd

    10.00

    (6 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Car Ports
    Garden Studios
    Suspended Ceilings
    Call
  • Allroundbuilders liverpool Logo

    Allroundbuilders liverpool

    (7 reviews)

    Operates in Lancashire

    Services & skills
    Builder
    Basement / Cellar Conversions
    Agricultural Building
    Insurance Claim Specialist
    Heritage Property Specialist
    Call

Find Companies for Basement and Cellar Conversions in Lancashire

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 Lancashire 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 Lancashire

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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 Lancashire?

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