Extensions / Conversions in Romford (139)

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  • Sponsored
    Jj Construction Group Ltd Logo

    Jj Construction Group Ltd

    9.87

    (21 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    New Builds
    Loft Conversions
    Call
  • Sponsored
    Property Solutions London Logo

    Property Solutions London

    Be the first to review

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    New Builds
    Emergency Builder Service
    Demolition
    Call
  • Bower Design & Build Limited Logo

    Bower Design & Build Limited

    9.93

    (275 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Structural Steels
    Structural Design
    Suspended Ceilings
    Call
  • Infinite loft & Extensions ltd Logo

    Infinite loft & Extensions ltd

    9.67

    (10 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Garden Studios
    Insurance Claim Specialist
    Garage Conversions
    Call
  • Gla Construction Ltd Logo

    Gla Construction Ltd

    10.00

    (15 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Car Ports
    Suspended Ceilings
    Call
  • Alp Builders Limited Logo

    Alp Builders Limited

    9.71

    (23 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Refurbishments
    Loft Conversions
    New Builds
    Call
  • Sinclair Renovations Logo

    Sinclair Renovations

    9.79

    (35 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Workshop Design / Construction
    Loft Conversions
    New Builds
    Call
  • Mili Builders (Mili Property Ltd) Logo

    Mili Builders (Mili Property Ltd)

    9.67

    (3 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Call
  • Trendy Extensions Logo

    Trendy Extensions

    9.97

    (10 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Demolition
    Fire and Flood Renovation
    Project Management
    Call
  • Jj Construction Group Ltd Logo

    Jj Construction Group Ltd

    9.87

    (21 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Refurbishments
    New Builds
    Call
  • BDR-Home Improvement Ltd Logo

    BDR-Home Improvement Ltd

    9.33

    (23 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Loft Conversions
    Brick / Concrete Structural Repairs
    Steel Work Design
    Call
  • Gesas-Ambition Limited Logo

    Gesas-Ambition Limited

    10.00

    (9 reviews)

    Operates in Romford

    Services & skills
    Builder
    Extensions / Conversions
    Garage Conversions
    New Builds
    Loft Conversions
    Call

Top rated Extensions / Conversions in Romford

10

/10

107 ratings

Our Extensions / Conversions in Romford are rated an average of 10 out of 10 based on a sample of 107 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 Romford

Planning a loft conversion, garage makeover or full house extension in Romford? 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 Romford

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 Romford

Our checked tradespeople in Romford 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 Romford

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 Romford: 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 Romford

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 Romford? Enter your postcode or post a job to find emergency services in your area.

Find the right extension or conversion specialist in Romford

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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