Evidence to gather first
Share photos, measurements, access notes, and any relevant survey or product information so steel fabricator quotes are based on the same facts.
A stronger brief helps tradespeople price the same job rather than guessing from incomplete information.
Share photos, measurements, access notes, and any relevant survey or product information so steel fabricator quotes are based on the same facts.
Ask whether preparation, materials, waste removal, making good, testing, and follow-on trades are included or priced separately.
Compare timing, insurance, review quality, warranty assumptions, and how clearly each steel fabricator explains exclusions before choosing a shortlist.
£500–£3,000 for small structural work, £15,000–£80,000+ for extensions and conversions
Typical UK costs. Actual quotes depend on job scope, location, and materials. Post your job free on Job2Build to get personalised quotes.
Use the same scope, finish standard, and access assumptions in every conversation so quotes stay comparable instead of drifting into vague sales copy.
Ask every builder to price the same drawings, structural assumptions, and provisional sums.
Confirm whether scaffolding, waste removal, skips, and temporary protection are included or excluded.
Get stage payments tied to visible milestones instead of open-ended weekly billing.
Make sure building control, structural engineer sign-off, and making-good items are priced explicitly.
Describe your steel fabricator project in a few minutes. Free for customers — always.
Verified steel fabricator professionals in your area respond with competitive quotes and their reviews.
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Find trusted steel fabricator professionals in your area — from London to Manchester, Edinburgh to Bristol.
Check for a proven track record with similar-scale projects in your area
Ask for references and visit completed projects where possible
Confirm they carry public liability insurance (minimum £2 million)
Verify they understand local building regulations and planning requirements
Get a detailed written quotation with a fixed timeline and payment schedule
Most structural work requires building regulations approval. Planning permission may be needed depending on size, location, and conservation area status.
Low-friction quotes are not enough on their own. Push these points into writing before you let a low price or early availability become the deciding factor.
Large cash deposits before materials, drawings, or programme details are agreed.
Quotes that ignore structural unknowns but still promise a fixed total and start date.
Refusal to discuss insurance, references, or who is responsible for building control coordination.
Pressure to skip written scope, staged payments, or neighbour access planning.
Many single-storey rear extensions fall under permitted development rights. However, if your property is in a conservation area, is listed, or the extension exceeds size limits, you will need planning permission. Always check with your local planning authority before starting work.
Look for verified customer reviews, proof of public liability insurance, membership of trade bodies like the FMB or NHBC, and ask to see examples of completed projects. A reliable builder will provide a detailed written quotation and a realistic timeline.
Builders handle the above-ground structure — walls, roofs, and finishes. Groundworkers prepare the site, dig foundations, install drainage, and lay services. Many extension or new build projects require both.
A typical loft conversion takes 6–10 weeks depending on the type (Velux, dormer, or mansard). The structural work takes 2–3 weeks, followed by plastering, electrics, plumbing, and finishing.
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