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Basement / Cellar Conversions in Street (16)

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  • S & R Construction (South West) Limited Logo

    S & R Construction (South West) Limited

    (10 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concrete Garages
    New Builds
    Cladding
    Call
  • ADB South West Logo

    ADB South West

    8.90

    (13 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Equestrian Stable
    Loft Conversions
    Warehouse Racking
    Call
  • Finch Renovations Limited Logo

    Finch Renovations Limited

    9.83

    (14 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Equestrian Stable
    Structural Steels
    Foundations
    Call
  • Buildcraft of Bath and Bristol Logo

    Buildcraft of Bath and Bristol

    9.67

    (1 review)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Concrete Garages
    Repair and Listed Building Specialist
    Call
  • L&C Carpentry Services Logo

    L&C Carpentry Services

    (3 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    General Building
    Agricultural Building
    Brick / Concrete Structural Repairs
    Call
  • H M Building And Landscaping Logo

    H M Building And Landscaping

    9.83

    (20 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Refurbishments
    Car Ports
    Equestrian Stable
    Call
  • RJ FAHY & SON Logo

    RJ FAHY & SON

    10.00

    (13 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    New Builds
    Insurance Claim Specialist
    Heritage Property Specialist
    Call
  • SM BUILDING & ROOFING LIMITED Logo

    SM BUILDING & ROOFING LIMITED

    9.44

    (6 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Loft Conversions
    Concreting
    Brick / Concrete Structural Repairs
    Call
  • Southwest Construction Logo

    Southwest Construction

    9.75

    (4 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Refurbishments
    Structural Design
    Project Management
    Call
  • MD CONSTRUCTION (SOUTH WEST) LTD Logo

    MD CONSTRUCTION (SOUTH WEST) LTD

    10.00

    (12 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Extensions / Conversions
    Refurbishments
    Wall Tie Replacements
    Call
  • Rhino Of Bath

    (0 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Workshop Design / Construction
    Warehouse Racking
    Sustainable Construction
    Call
  • Sbssw ltd

    10.00

    (108 reviews)

    Operates in Street

    Services & skills
    Builder
    Basement / Cellar Conversions
    Demolition
    Car Ports
    Loft Conversions
    Call

Find Companies for Basement and Cellar Conversions in Street

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 Street 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 Street

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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 Street?

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