Basement / Cellar Conversions in TN12 (55)

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  • Sponsored
    SJLK Construction Group Logo

    SJLK Construction Group

    10.00

    (4 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Garden Studios
    Agricultural Building
    Concrete Garages
    Call
  • DK Carpentry Construction Logo

    DK Carpentry Construction

    9.47

    (257 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Demolition
    Workshop Design / Construction
    Partition Walls
    Call
  • Barclay Renovations Logo

    Barclay Renovations

    10.00

    (5 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Demolition
    Loft Conversions
    Warehouse Racking
    Call
  • Blends Construction Services Limited Logo

    Blends Construction Services Limited

    9.67

    (195 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Mastic Sealant
    Agricultural Building
    Loft Conversions
    Call
  • Marben Construction Logo

    Marben Construction

    9.33

    (73 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Sustainable Construction
    Wall Tie Replacements
    Diamond Drilling
    Call
  • Templar Developments Ltd Logo

    Templar Developments Ltd

    9.00

    (85 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    New Builds
    Concreting
    Project Management
    Call
  • Muras Construction Ltd Logo

    Muras Construction Ltd

    10.00

    (12 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Loft Conversions
    Demolition
    Property Maintenance / Repair
    Call
  • Pulman Construction Ltd Logo

    Pulman Construction Ltd

    9.87

    (53 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Concreting
    Foundations
    Workshop Design / Construction
    Call
  • Foundations To Finished Ltd Logo

    Foundations To Finished Ltd

    10.00

    (8 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Fire and Flood Renovation
    Loft Conversions
    General Building
    Call
  • DJ Wagland General Building Limited Logo

    DJ Wagland General Building Limited

    9.60

    (82 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Steel Fabrication
    Car Ports
    Extensions / Conversions
    Call
  • Advance Building Contractor

    10.00

    (71 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Loft Conversions
    Extensions / Conversions
    Refurbishments
    Call
  • Cantium Construction & Refurbishments LTD Logo

    Cantium Construction & Refurbishments LTD

    9.50

    (23 reviews)

    Operates in TN12

    Services & skills
    Builder
    Basement / Cellar Conversions
    Mastic Sealant
    Agricultural Building
    Wall Tie Replacements
    Call

Find Companies for Basement and Cellar Conversions in TN12

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 TN12 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 TN12

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.

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 TN12?

Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in TN12 and check out our latest home improvement guides.