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Basement / Cellar Conversions in Shoreham By Sea (61)

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  • 9 Carpentry Limited Logo

    9 Carpentry Limited

    9.88

    (42 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Project Management
    Refurbishments
    Garage Conversions
    Call
  • Green Builders Sussex Ltd Logo

    Green Builders Sussex Ltd

    10.00

    (283 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Structural Steels
    Car Ports
    Diamond Drilling
    Call
  • Boss Building & Carpentry Limited Logo

    Boss Building & Carpentry Limited

    9.92

    (45 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Refurbishments
    Extensions / Conversions
    Garage Conversions
    Call
  • Sponsored
    Next Level Construction Sussex Ltd Logo

    Next Level Construction Sussex Ltd

    9.52

    (43 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Refurbishments
    Concrete Garages

    Latest verified customer review

    10.0

    “We chose Next Level on a personal family recommendation and we’re not disappointed. All the Next Level personnel were cheerful, pleasant, superb at carrying out excellent work and hardworking. Although they were fitting our own design they were willing to offer changes for our consideration- all of which were of benefit to us. Overall very pleased with the outcome and would recommend this company.”

    Call
  • Pearl Building Ltd Logo

    Pearl Building Ltd

    9.90

    (242 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Refurbishments
    Cladding
    Mastic Sealant
    Call
  • GARTH CONSTRUCTION LTD Logo

    GARTH CONSTRUCTION LTD

    9.67

    (2 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Cladding
    Suspended Ceilings
    Core Drilling
    Call
  • Prek Building Services Ltd Logo

    Prek Building Services Ltd

    10.00

    (37 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    General Building
    Refurbishments
    Structural Steels
    Call

  • Croft Builders Ltd

    9.93

    (162 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Brick / Concrete Structural Repairs
    Insurance Claim Specialist
    Property Maintenance / Repair
    Call
  • JACK N SON Renovation & Maintenance Limited Logo

    JACK N SON Renovation & Maintenance Limited

    10.00

    (24 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Loft Conversions
    Insurance Claim Specialist
    Demolition
    Call
  • South Coast Damp Proofing Logo

    South Coast Damp Proofing

    9.56

    (24 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garage Conversions
    Warehouse Racking
    Concrete Garages
    Call

  • S D CONSTRUCTION AND CARPENTRY LTD

    Be the first to review

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Core Drilling
    Sustainable Construction
    Warehouse Racking
    Call
  • KR Property Maintenance and Construction Ltd Logo

    KR Property Maintenance and Construction Ltd

    9.93

    (9 reviews)

    Operates in Shoreham-by-Sea

    Services & skills
    Builder
    Basement / Cellar Conversions
    Steel Work Design
    Steel Fabrication
    Concrete Garages
    Call

Top rated Basement / Cellar Conversions in Shoreham-by-Sea

10

/10

87 ratings

Our Basement / Cellar Conversions in Shoreham-by-Sea are rated an average of 10 out of 10 based on a sample of 87 reviews from customers like you*

*This review aggregate is based on real customer reviews from a randomly selected postcode in this area

Find Companies for Basement and Cellar Conversions in Shoreham-by-sea

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 Shoreham-by-sea 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 Shoreham-by-sea

Expect to pay between £6690 and £24932 , with an average cost of £13309.

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.

Are basements legal in the UK?

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)

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