Extensions / Conversions in Crews Hill (203)

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  • Sandarov Ltd Logo

    Sandarov Ltd

    9.90

    (170 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Cladding
    Heritage Property Specialist
    Partition Walls
    Call
  • Eric Lala Construction Ltd Logo

    Eric Lala Construction Ltd

    10.00

    (21 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    General Building
    Green Oak Framing
    Call
  • Em Construction & Maintenance Ltd Logo

    Em Construction & Maintenance Ltd

    10.00

    (10 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Garden Studios
    Partition Walls
    Brick / Concrete Structural Repairs
    Call
  • Goodson & Walton Property Enhancement

    10.00

    (1 review)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Sustainable Construction
    Demolition
    Insurance Claim Specialist
    Call
  • AJ Lynch Building & Refurbishment Logo

    AJ Lynch Building & Refurbishment

    10.00

    (46 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Loft Conversions
    Insurance Claim Specialist
    Call
  • CONSTRUCT LDN LIMITED Logo

    CONSTRUCT LDN LIMITED

    Be the first to review

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Emergency Builder Service
    Fire and Flood Renovation
    Call
  • CC Loft Conversion Logo

    CC Loft Conversion

    10.00

    (18 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Stretched Ceilings
    Heritage Property Specialist
    Call
  • Adams Design & Do Logo

    Adams Design & Do

    9.73

    (100 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Insurance Claim Specialist
    General Building
    Concrete Garages
    Call
  • Baci's Construction Ltd Logo

    Baci's Construction Ltd

    9.90

    (30 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Refurbishments
    Loft Conversions
    Call
  • Home Improvement Solutions London LTD Logo

    Home Improvement Solutions London LTD

    10.00

    (145 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Warehouse Racking
    Sustainable Construction
    Call
  • Goni And Partners Limited Logo

    Goni And Partners Limited

    9.67

    (15 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    Brick / Concrete Structural Repairs
    Property Maintenance / Repair
    Call
  • Brooks Builders & Decorators

    10.00

    (76 reviews)

    Operates in Crews Hill

    Services & skills
    Builder
    Extensions / Conversions
    Suspended Ceilings
    Demolition
    Basement / Cellar Conversions
    Call

Top rated Extensions / Conversions in Crews Hill

10

/10

51 ratings

Our Extensions / Conversions in Crews Hill are rated an average of 10 out of 10 based on a sample of 51 reviews from customers like you*

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

Conversion and extension builders in Crews Hill

Planning a loft conversion, garage makeover or full house extension in Crews Hill? You’re in the right place. Whether you’re adding space for a growing family, upgrading your layout or increasing your home’s value, we can help you find the right tradesperson for the job.

Find extension and conversion builders in Crews Hill

Every builder on Checkatrade passes up to 12 checks before they appear in your search. You can read verified reviews, compare services, and even post your job to get quotes straight to your inbox, all in a few clicks. That’s how we help homeowners like you get a job done right.

What to expect from hiring an extension or conversion builder in Crews Hill

Our checked tradespeople in Crews Hill cover a wide range of projects, including:

  • Single or double-storey house extensions

  • Kitchen and diner extensions

  • Loft, attic, garage or basement conversions

  • Garden room extensions

  • Utility room extensions

  • Over-garage extensions and side returns

Extension and conversion build costs in Crews Hill

Costs of extensions and conversions vary depending on size, structure and spec, but here's a rough guide:

Extensions:

£32709 on average, with prices typically starting at £20085 up to £52106.

Loft conversions:

£35928 on average, with prices typically starting at £23495 up to £54370.

Garage conversions:

£11307 on average, with prices typically starting at £7931 up to £16168.

Conservatory roof conversions:

£8088 on average, with prices typically starting at £5783 up to £11360.

Need help calculating costs? Use our Job Value Estimator Tool for a bespoke cost estimate.

What to check before you hire:

  • Are drawings or planning permissions needed?
  • Are they familiar with building regs?
  • Is the quote fixed or flexible?
  • Does it cover materials and project management?

Most builders will include prep, construction, electrics, plumbing and final finishes in their quote, but always double-check. Timelines range from a few weeks for simple jobs to several months for bigger builds.

Extension and conversion builders in Crews Hill: Homeowners vs renters

Homeowners:

You’re in charge of the project. That means hiring the builder, securing permissions, and paying for the work. You may need:

  • Planning permission (especially for double-storey builds or changes near boundaries)

  • Drawings from an architect or structural engineer

  • Building regs approval

If you’re not sure where to start, speak to a local builder or post your job to get help with the process.

Renters:

You’ll usually need your landlord’s approval to make any big changes. In most cases, your landlord will be the one arranging and paying for structural changes like loft conversions or extensions. That said, it’s worth flagging ideas if you think they’ll improve the property, especially if it means longer tenancies or fewer repairs.

Emergency extension or conversion help in Crews Hill

Extensions and conversions are big projects, but sometimes, things go wrong and need sorting fast. Common urgent issues include:

  • Leaks in newly converted lofts

  • Structural cracks or shifting

  • Faulty electrics or plumbing in newly added rooms

  • Incomplete work by previous builders

Facing an emergency in Crews Hill? Enter your postcode or post a job to find emergency services in your area.

Find the right extension or conversion specialist in Crews Hill

Looking for a builder to help with:

  • Rear house extensions
  • Kitchen extensions
  • Garage conversions
  • Loft or attic conversions
  • Garden room builds
  • Basement or cellar conversions
  • Conservatory roof upgrades
  • Utility or porch extensions

Start your search now


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