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Basement / Cellar Conversions in Southend On Sea (22)

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  • R&R Building Group LTD Logo

    R&R Building Group LTD

    9.76

    (187 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Emergency Builder Service
    Car Ports
    Project Management
    Call
  • DSR builders Limited Logo

    DSR builders Limited

    9.94

    (12 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Mastic Sealant
    Fire and Flood Renovation
    Garden Studios
    Call
  • Essex Builder Construction Ltd Logo

    Essex Builder Construction Ltd

    8.52

    (20 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Workshop Design / Construction
    Extensions / Conversions
    Call
  • 1 Stop Building Services Logo

    1 Stop Building Services

    9.94

    (167 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Fire and Flood Renovation
    Structural Steels
    Core Drilling
    Call
  • Higher Level Building & Refurbishment Logo

    Higher Level Building & Refurbishment

    10.00

    (33 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Foundations
    Agricultural Building
    Partition Walls
    Call
  • EZ Construction Logo

    EZ Construction

    10.00

    (2 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garage Conversions
    Building Merchants
    Agricultural Building
    Call
  • W L P Interiors Logo

    W L P Interiors

    10.00

    (111 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    General Building
    Extensions / Conversions
    Loft Conversions
    Call
  • LAS Home Improvements

    9.84

    (176 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Core Drilling
    New Builds
    Refurbishments
    Call
  • BBD Logo

    BBD

    9.47

    (5 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Refurbishments
    Concrete Garages
    Demolition
    Call
  • Concept Infrastructure Limited Logo

    Concept Infrastructure Limited

    10.00

    (107 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Structural Design
    Garage Conversions
    Call
  • HTH Construction Ltd Logo

    HTH Construction Ltd

    (0 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Suspended Ceilings
    Cladding
    Refurbishments
    Call
  • JBS building solutions Ltd Logo

    JBS building solutions Ltd

    (0 reviews)

    Operates in Southend

    Services & skills
    Builder
    Basement / Cellar Conversions
    Car Ports
    Mastic Sealant
    Refurbishments
    Call

Find Companies for Basement and Cellar Conversions in Southend

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 Southend 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 Southend

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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 Southend?

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