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Loft Conversions in Mountain Ash (18)

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  • LMB Construction (SW) Limited Logo

    LMB Construction (SW) Limited

    (12 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Partition Walls
    Fire and Flood Renovation
    Cladding
    Call
  • Artisan

    10.00

    (113 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Structural Design
    Structural Steels
    New Builds
    Call
  • Keramics Logo

    Keramics

    10.00

    (49 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Foundations
    Demolition
    New Builds
    Call
  • Orange Stone Construction Logo

    Orange Stone Construction

    10.00

    (2 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Car Ports
    Warehouse Racking
    Sustainable Construction
    Call
  • Inavision Construction Logo

    Inavision Construction

    9.85

    (25 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Garage Conversions
    Cladding
    Suspended Ceilings
    Call
  • G W CARPENTRY AND BUILDING

    10.00

    (19 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Fire and Flood Renovation
    Wall Tie Replacements
    Garden Studios
    Call
  • GMSG Building Ltd Logo

    GMSG Building Ltd

    9.50

    (21 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Wall Tie Replacements
    Extensions / Conversions
    Core Drilling
    Call
  • Vale Renovations & Property Maintenance Logo

    Vale Renovations & Property Maintenance

    10.00

    (5 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Refurbishments
    Extensions / Conversions
    Garage Conversions
    Call
  • Apex Carpentry And Building Ltd Logo

    Apex Carpentry And Building Ltd

    (10 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Garage Conversions
    Sustainable Construction
    Suspended Ceilings
    Call
  • ADS Carpentry and Building Services

    9.80

    (58 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Cladding
    Garden Studios
    Extensions / Conversions
    Call
  • Design Build Ltd Logo

    Design Build Ltd

    10.00

    (53 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Suspended Ceilings
    Cladding
    Workshop Design / Construction
    Call
  • Tri Dyn Electrical and Building Services Logo

    Tri Dyn Electrical and Building Services

    9.89

    (16 reviews)

    Operates in Mountain Ash

    Services & skills
    Builder
    Loft Conversions
    Emergency Builder Service
    Stretched Ceilings
    Wall Tie Replacements
    Call

Loft conversions in Mountain Ash

Planning a loft conversion in Mountain Ash? Whether you’re dreaming of a new bedroom, a home office, or just more space to breathe, we’re here to help.

Find rated loft conversion builders in Mountain Ash without the hassle

With Checkatrade, you can find checked loft conversion companies in Mountain Ash and get quotes from trades who cover your area, fast. No faff. Just a simple way to turn that empty attic into something brilliant.

Post your job in minutes or browse reviewed Mountain Ash loft conversion builders near you. It’s free to use, and you’re in control every step of the way.

What to expect from hiring a loft conversion builder in Mountain Ash

Loft conversions are one of the most popular ways to add space (and value) to a home. Here’s what you need to know:

Common loft conversion jobs in Mountain Ash

  • Dormer loft conversions
  • Hip-to-gable conversions
  • Velux (rooflight) conversions
  • Mansard conversions
  • Bungalow loft extensions

Average cost of a loft conversion in Mountain Ash

Loft conversions:

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Loft ladder installers:

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Loft window installation:

Expect to pay [pricing[3].Mountain Ash.[Loft Windows Installation].[averagePriceFormatted]] on average, with prices typically starting at [pricing[3].Mountain Ash.[Loft Windows Installation].[lowPriceFormatted]] up to [pricing[3].Mountain Ash.[Loft Windows Installation].[highPriceFormatted]].

Roof light installation:

Expect to pay [pricing[4].Mountain Ash.[Roof Lights Installation].[averagePriceFormatted]] on average, with prices typically starting at [pricing[4].Mountain Ash.[Roof Lights Installation].[lowPriceFormatted]] up to [pricing[4].Mountain Ash.[Roof Lights Installation].[highPriceFormatted]].

Dormer windows:

Expect to pay [pricing[5].Mountain Ash.[Dormer / Roof Windows].[averagePriceFormatted]] on average, with prices typically starting at [pricing[5].Mountain Ash.[Dormer / Roof Windows].[lowPriceFormatted]] up to [pricing[5].Mountain Ash.[Dormer / Roof Windows].[highPriceFormatted]].

Explore our loft conversion cost guide for a detailed breakdown.

What’s included in a loft conversion quote?

  • Design and structural plans
  • Building work and insulation
  • Stairs, electrics, plumbing
  • Windows, flooring, and finishes

Extra costs to think about:

  • Architect or structural engineer fees
  • Planning permission (if required)
  • Bathrooms or heating upgrades
  • Underfloor heating or bespoke storage

How long does a loft conversion take?

Velux: 4 - 6 weeks

Dormer: 10 - 12 weeks

Mansard: 8 - 10 weeks

Loft conversions in Mountain Ash: Homeowners vs renters

If you own your home:

  • You’re responsible for planning, permissions, and hiring.
  • Check if you need planning permission; many lofts fall under permitted development, but not all.
  • Building regulations always apply. A loft conversion without sign-off could cause issues later (including invalidating home insurance).

If you rent:

  • You can’t carry out major work like a loft conversion.
  • Speak to your landlord if you notice issues in the loft space (leaks, insulation problems etc.).
  • If you spot an unregulated loft conversion, flag it with your landlord or letting agent.

Emergency loft conversion help in Mountain Ash

Need urgent loft work like a leak, collapsed ceiling, or unsafe structure? We’ve got you.

Search for emergency loft conversion services in Mountain Ash to find available trades fast.

Find a loft conversion builder for your job in Mountain Ash

Here are some common requests from homeowners and renters alike:

  • Loft boarding or insulation
  • Full loft extensions
  • Velux or dormer installations
  • Bungalow loft conversion design
  • Loft conversion quotes
  • Structural inspections or fixes
  • Loft stairs installation
  • Loft storage or lighting upgrades
  • Fixing illegal or unregulated conversions

Use our request a quote feature; it’s a quick, easy way to get responses from loft builders covering your local area.


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