The build blog
Practical guides, cost breakdowns, and expert tips for UK homeowners planning a construction project.
Complete guides
The Complete Guide to Builder Quotes in the UK
What every legitimate builder quote must include, 7 warning signs to reject on sight, and how to compare price vs scope, not just the total.
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Protecting Yourself During Building Work: The Complete Guide
Practical guide to protecting your money and your home during building work. Covers vetting builders, contracts, deposits, disputes, and your consumer rights.
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UK Building Costs 2026: The Complete Price Guide
Extensions cost £2,000–£3,400 per m² in 2026: single-storey £36,000–£68,000, loft conversion £22,000–£80,000, boiler swap from £2,200. Full price table.
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UK Building Regulations: Key Measurements Every Homeowner Should Know
The numbers on one page: 0.45m foundations, DPC 150mm above ground, 2m stair headroom, 0.18 W/m²K on an extension wall, each with its Approved Document anchor.
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How to Check Your Builder's Work: The Homeowner's Quality Guide
Check each stage while it is still visible: DPC at 150mm, foul drains at 1:40 or 1:80, the Part P certificate within 30 days. Ten stages and what to look at.
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Boiler Quote: What to Check Before You Sign
A boiler quote should name the model, state 92% ErP efficiency and, for a combi in England, name one of four extra measures. Nine checks before you sign it.
Conservatory to Extension Conversion: Cost and Building Regs
Converting a conservatory into a habitable room costs £10,000–£35,000 and ends its building regs exemption. The Part L U-values and quote lines to check.
Fascia, Soffit and Gutter Quotes: Cap-Over or Full Replacement?
Fascia, soffit and gutter replacement runs £90–£150 per linear metre fitted, or £1,400–£5,400 for a house. How to check cap-over, scaffolding and gutter fall.
Can I Cancel a Builder After Signing? The 14-Day Cooling-Off Rule
Agreed a builder's quote at home? You can usually cancel within 14 days, or longer if they never told you. Accepted it by email after a site visit? Often not.
Log Burner Installation Quotes: Six Lines That Decide the Price
Log burner installation costs £2,500–£3,500 with a usable chimney, £4,600–£7,300 without. Here are the six quote lines that explain the gap. Part J explained.
How to Check a Builder Is Legitimate in Ten Minutes
Companies House, Gas Safe, NICEIC or NAPIT, FENSA or CERTASS, TrustMark, FMB, insurance and reviews: the exact checks to run, in order, before you say yes.
Boiler Beyond Economical Repair? How to Check the Verdict
Beyond economical repair is a commercial judgement, not a safety verdict. Only a Gas Safe verdict condemns a boiler. Check yours before you spend £3,000.
Air Conditioning Cost UK 2026: Prices and the £2,500 Grant
Home air conditioning costs £1,500-£3,000 per room in 2026. Air-to-air heat pumps now qualify for a £2,500 grant. See the prices, who actually qualifies, and how to check the quote.
Bathroom Electrical Zones Explained: Zone 0, 1 and 2 (UK)
Zone 0 is inside the bath, Zone 1 rises 2.25m above it, Zone 2 runs 0.6m beyond. IPX7, IPX4 and 30mA RCD rules, and what Part P makes notifiable.
Boiler Upgrade Scheme 2026: Every Heat Pump Grant Rate Explained
The 2026 Boiler Upgrade Scheme: £7,500 for air and ground source heat pumps, £5,000 biomass, a £2,500 air-to-air tier, plus the live £1,500 off-gas-grid uplift taking grants to £9,000.
A Real Builder's Quote, Annotated Line by Line (Good vs Bad)
What does a builder's quote actually look like, and where do the problems hide? Here is a realistic example quote annotated line by line, with the red flags a good check would flag.
Builder Gone Bust Mid-Job? What to Do First and What You Can Recover
If your builder has gone bust mid-job, act fast: secure the site, stop payments, document everything, and check your recovery routes including Section 75. Here is the order to do it in.
Damp Proofing Cost UK 2026: DPC Injection and Treatment Prices
Damp proofing costs £70-£120 per linear metre, or roughly £1,000-£3,000 per property in 2026. See the prices, the replastering trap, and how to check the diagnosis is even right.
Decking Rules UK: The 300mm, 600mm and 50% Limits Explained
In England a deck stays permitted development if it sits no more than 300mm above ground and covers no more than 50% of the garden. Raised decks need guarding.
New Driveway Cost UK 2026: Block, Resin and Tarmac Prices per m²
Block paving £80-£120/m², resin £40-£120/m², tarmac from £50/m². See 2026 driveway prices by material, the sub-base that makes cheap quotes fake-cheap, and a free calculator.
Fire Escape Window Regulations UK: Minimum Egress Window Sizes
In England, egress windows need a clear openable area of at least 0.33m², a minimum 450mm opening, and the bottom of the opening no higher than 1,100mm. See where they are required and how to check your quote.
Does the Future Homes Standard Apply to Extensions?
The Future Homes Standard applies to new homes from 2027, not to extensions. Extensions keep the same U-value targets when the 2026 rules take effect. Here is what actually changes for homeowners and your quote.
Garage Conversion Building Regulations: The 2026 Approval Checklist
A garage conversion almost always needs building regulations approval, even when planning permission is not required. Here are the parts that apply and what your quote must cover.
Is There Really a Gas Boiler Ban? What 2027 Means for You
There is no ban on replacing your gas boiler. The 2027 rules stop fossil-fuel heating in new homes only. Here is what the gas boiler ban headlines actually mean for existing homes.
Heat Pump Planning Rules: The 1-Metre Boundary Rule Is Gone
The 1-metre boundary rule for heat pumps was scrapped in 2025. New limits cover unit size, the number of units, and a 37 dB(A) noise test. Here is what you can fit without permission.
House Rewiring Cost UK 2026: Prices by Property Size
A full rewire costs roughly £4,000-£6,000 for a 3-bed semi in 2026. See prices by size and age, what is included, the making-good trap, and a free rewire cost calculator.
Removing a Load-Bearing Wall: Cost, RSJ Prices and Regs (2026)
Removing a load-bearing wall costs £1,800-£7,500 in 2026, including the RSJ, engineer's calculations, and Building Control. See the cost breakdown and the regs your quote must cover.
Loft Insulation Depth: Why 270mm Is the UK Building Regs Benchmark
UK building regs expect roughly 270mm of mineral wool loft insulation for a 0.16 U-value. Here is what the depth means, what your quote should specify, and how to check it.
Minimum Ceiling Height UK: What the Rules Actually Require
There is no general minimum in UK building regs. Space standards expect 2.3m, London 2.5m, and stairs need 2m headroom (1.8m at a loft edge). What applies.
New Kitchen Cost UK 2026: Fitted Kitchen Prices and Labour
A new fitted kitchen costs £5,000-£25,000 in 2026, with labour-only fitting at £1,700-£3,000. See the budget, mid and high tiers, the supply-vs-labour split, and what a fair quote includes.
New Roof Cost UK 2026: Replacement Prices by Type and Material
A new roof on a 3-bed semi costs roughly £6,500-£14,500 in 2026, or £120-£275 per m². See prices by property and material, plus a free roof cost calculator and quote red flags.
How Much Does a Porch Cost in the UK? (2026 Prices)
Open canopy porch from £1,500, enclosed uPVC from £2,500, full brick from £5,000. See 2026 prices by type and size, plus a free instant porch cost calculator.
Staircase Building Regulations UK: Part K Dimensions Explained
In England a private stair needs a rise of 150mm to 220mm, a going of 220mm to 300mm, a maximum pitch of 42 degrees and 2m headroom. Wales and Scotland differ.
Subsidence and Underpinning Costs UK: Cracks, Causes and Prices
Underpinning costs £6,000-£21,000 and crack repair £2,000 upwards. After a record year for subsidence claims, here are the causes, the costs, and how to check an underpinning quote.
How to Compare Builder Quotes - The Complete Method
Line up scope, exclusions and payment terms before price. In the worked example the cheapest quote, £48,000, normalises to £55,150 once the gaps are added back.
DIY Quote Checking vs Getting Professional Help - A Practical Guide
You can check a builder's quote yourself with the right knowledge. Here's a practical guide to DIY quote checking - and when to get professional help instead.
How to Tell if Builder Reviews Are Real - A No-Nonsense Guide
7 signs a builder review is fake, which UK platforms actually verify reviewers, and how to check the quote itself: free AI verdict in under a minute.
Free vs Paid Quote Checking - Is It Worth Paying For?
You can check a builder's quote yourself for free. Or you can pay for help. Here's what you get for free, what costs money, and where the real value lies.
MyBuilder vs Getting Your Own Quotes - Which Gets Better Results?
Should you post your job on MyBuilder or find builders yourself? Pros, cons, and costs of each approach - plus what to do once quotes arrive.
AI Quote Checker vs Quantity Surveyor - Which Do You Actually Need?
Should you use an AI tool or hire a quantity surveyor to check your builder's quote? Honest comparison of cost, speed, accuracy, and when each makes sense.
Should I Use Checkatrade to Find a Builder? An Honest Look
Checkatrade checks ID, qualifications and CCJs, not workmanship or price. What the vetting covers, what the £1,000 guarantee excludes, what is left to you.
Driveway Quote - How to Spot the Cowboys Before They Start
Driveway quotes are where cowboys thrive. Here's what a proper quote includes, UK costs for 2026, and the details that separate the good from the dodgy.
How to Avoid Cowboy Builders: The Complete UK Guide
Spot rogue builders before it's too late. 15 red flags, vetting checklist, and how MyBuildAlly's quote analysis protects you from cowboy builders.
Painter & Decorator Costs UK - What You'll Actually Pay in 2026
How much should a painter and decorator charge in 2026? Room-by-room costs, day rates, and the quote details that separate the pros from the cowboys.
Party Wall Agreements: What UK Homeowners Need to Know (2026)
Everything about party wall agreements for UK extensions and loft conversions. When you need one, surveyor costs, timeline, and how to serve notice to your neighbour.
Side Return Extension Cost UK 2026: Prices, Breakdown & Tips
How much does a side return extension cost? Full 2026 UK prices with trade-by-trade breakdown, planning rules, party wall info, and tips to check your builder's quote.
UK Tradesperson Day Rates 2026: What Every Trade Charges
Complete guide to UK tradesperson costs in 2026. Hourly rates, day rates, and regional differences for every trade from electricians to plasterers.
How Much Does a Wrap-Around Extension Cost in 2026?
Find out how much a wrap-around extension costs in the UK. Trade-by-trade breakdown, regional pricing from BCIS data, and tips to check your builder's quote.
Bathroom Fitter's Quote - The Checklist That Saves You Thousands
Bathroom fitting quotes vary wildly. Here's what a proper one includes, UK costs for 2026, and the items most fitters conveniently leave out.
Landscaping Quote - How to Compare Without Getting Stung
Comparing landscaping quotes? Here's what each should include, typical UK costs for 2026, and the hidden extras that catch people out.
Bathroom Renovation Cost UK 2026: What You'll Actually Pay
What does a bathroom renovation really cost in 2026? Itemised breakdown by tier, labour vs materials split, regional prices, and what quotes commonly miss.
Do I Need Building Regulations for a Garden Room? The 2026 Rules Explained
15m² or less is exempt. Up to 30m² is exempt if 1m from a boundary or non-combustible. Over 30m², or any sleeping room, needs full approval. What to submit.
Garden Room Cost UK 2026: Complete Price Breakdown
How much does a garden room cost in 2026? From £8k budget builds to £60k+ premium offices. Real prices by size, type, and specification.
How to Check a Garden Room Quote: What's Included, What's Missing
Garden room quotes are notorious for exclusions. Here's the complete checklist of what should be included and the red flags to watch for.
Renovate or Move in 2026? How to Decide (and Budget Properly)
Should you extend your home or buy a bigger one? We compare the real costs of moving vs renovating in 2026, including stamp duty, fees, and project prices.
Rogue Builders: How to Spot Them Before You Sign
10 warning signs of a cowboy builder, how to vet tradespeople properly, and your legal protections. Practical guide for UK homeowners.
Spring Home Maintenance Checklist: What to Inspect After Winter
A spring maintenance checklist for UK homeowners. Catch winter damage to roofs, gutters, walls, and drainage before small problems get expensive.
Roofer's Quote - Red Flags That Could Cost You Thousands
Roofing quotes are where homeowners get caught out most. Here's what a proper roofer's quote includes, UK costs for 2026, and the red flags you can't afford to miss.
Electrician's Quote - What Should It Actually Include?
Electrician quotes are notoriously vague. Here's what a proper one includes, typical UK costs for 2026, and what to do if yours is missing the detail.
Plumber's Quote - What to Check Before You Say Yes
What should a plumber's quote include? Here's exactly what to look for, typical UK costs for 2026, and the red flags that cost homeowners thousands.
Building Contracts for Homeowners: JCT, FMB & When You Need One
For projects over £20,000 you should use a formal building contract. Here's which type to choose, what it covers, and why a quote alone isn't enough.
Building Control vs Approved Inspectors: Which Route to Choose
You can use your local council's building control or a private approved inspector. Here's how they compare on cost, speed, and what to watch out for.
UK Construction Glossary: 20 Terms Every Homeowner Should Know
Plain-English definitions of provisional sum, prime cost, practical completion, retention, snagging, and 15 more construction terms homeowners need to understand.
Your Consumer Rights: What to Do When Building Work Goes Wrong
Under the Consumer Rights Act 2015 work must be done with reasonable care and skill. Your remedies: repair, a price reduction, Section 75. Step by step.
Garage Conversion Cost UK 2026: Full Breakdown
Garage conversion costs in the UK range from £8,000 to £25,000 depending on specification. Full breakdown by type with real 2026 prices.
Heat Pump Quotes UK 2026: Costs, Grants & What to Check
Air source heat pump installation costs £8,000-£18,000 before the £7,500 BUS grant. Here's what your quote should include and what to watch out for.
Party Wall Agreement: Costs, Process & Quote Implications
The party wall process is free if your neighbour consents and £700-£2,000+ per neighbour if surveyors are needed, and it takes 2-3 months. When you must serve notice, and how it affects your build.
Practical Completion: What It Means and What to Check
Practical completion marks when building work is substantially done. Here's what it means for homeowners, what to inspect, and when to release final payment.
Scaffolding Costs UK: What's Included and What's Not
A two-storey wrap costs £1,500–£2,500 for a 6 to 8 week hire, then £80–£120 a week if the build overruns. What a scaffolding quote covers and what it omits.
Snagging Guide: How to Inspect Your New Build or Extension
A snagging inspection catches defects before you accept the finished work. Here's how to do it yourself with a room-by-room checklist.
Stage Payments and Retention: When to Pay Your Builder
A typical schedule is 10% on signing, then payments at foundations, first floor and watertight, with 2.5% to 5% retention held for 6 to 12 months.
Structural Engineer Costs UK: When You Need One and What to Pay
Beam calculation: £300-£600. Loft conversion design: £800-£1,500. Full extension: £1,500-£3,000. When you need one and how to check the fee is fair.
VAT on Building Work: 0%, 5% or 20%? The Complete UK Guide
Most building work carries 20% VAT. New builds are zero-rated, homes empty for 2+ years qualify for 5%. Builders under the £90,000 threshold charge none.
What Is a Provisional Sum? Why It Matters in Your Builder's Quote
A provisional sum is an estimated allowance for work that can't be priced exactly. Here's what homeowners need to know and how to avoid cost surprises.
How Thick Should Cavity Wall Insulation Be? UK Building Regs Explained
Part L sets a U-value, not a thickness: 0.18 W/m²K on an extension wall. In practice, 150mm full-fill mineral wool or 75–100mm PIR plus a 50mm cavity.
Flat Roof U-Values and Insulation: UK Building Regs Explained
Building regs need 0.16 W/m²K on a new flat roof, 0.15 on an extension: about 140–150mm of PIR on a warm roof. Warm vs cold roof, and what fails sign-off.
How to Check Brickwork Quality: A Homeowner's Guide
Learn how to inspect brickwork quality yourself. Mortar joints, wall ties, cavity insulation, DPC, and weep holes explained with building regulations references.
How to Check DPC and Damp Proofing: What Every Homeowner Should Inspect
The DPC should sit at least 150mm above outside ground level, and the 225mm figure is how far the cavity goes below it, not above. What to check, and when.
How to Check Your Electrician's Work: A Homeowner's Guide
How to check electrical work quality yourself. Part P certification, consumer units, RCD protection, cable routes, and smoke alarms with building regulations explained.
How to Check Foundation Work: A Homeowner's Inspection Guide
A plain English guide to inspecting foundation work on your building project. Covers trench depth, concrete spec, soil conditions, and building control stages.
How to Check Plastering Quality: What Good Work Looks Like
How to inspect plastering quality yourself. Flatness tolerances, skim thickness, hollow spots, cracking, and corner beads explained with practical checks.
How to Check Plumbing and Drainage Work Quality
How to inspect plumbing and drainage work yourself. Pipe gradients, drain bedding, unvented cylinders, discharge pipes, and water efficiency with building regulations.
How to Check Roofing Work: What Every Homeowner Should Inspect
How to inspect roofing work quality yourself. Tile alignment, lead flashings, ventilation, insulation, and guttering checks with building regulations explained.
How to Check Structural Steelwork: A Homeowner's Guide to Beams and Supports
Plain English guide to inspecting structural steel beams and supports on your building project. Covers beam specs, bearing lengths, padstones, fire protection, and lintels.
How to Check Window and Door Installation Quality
How to inspect window and door installation yourself. FENSA certificates, trickle vents, U-values, fire doors, and draught seals with building regulations explained.
Loft Conversion Headroom and Staircase Rules: UK Building Regs
Approved Document K sets 1.9m stair headroom for loft conversions, 220mm max rise and 42 degree max pitch. No minimum room height or stair width. Part K and Part B explained.
Minimum Foundation Depth UK: What Building Regulations Require
Building regs set a 450mm minimum, but most UK house and extension foundations go to 900mm–1.5m, and up to 2.5m in clay near trees. What decides yours.
What Should a DPC Look Like? Spotting Damp Proof Course Problems
A DPC is a black polythene strip at least 150mm above ground level. Learn how to spot bridged, missing, or failing damp proof courses on your property.
Builder Hasn't Started Work - When Should I Worry?
Some delay between signing and starting is normal. But if your builder has taken a deposit and gone quiet, here's when to worry and what to do about it.
Builder Says I Don't Need Planning Permission - Can I Trust That?
A lawful development certificate costs £274 and settles it in writing. When your builder is right, when a £249 prior approval applies, and who pays if not.
My Builder Won't Give a Written Quote - Is That a Red Flag?
If your builder won't put their price in writing, that's a serious red flag. Here's what a proper quote should contain and what to do next.
How Many Quotes Should I Get for an Extension? At Least 3 - Here's Why
Get at least 3 quotes for an extension, ideally 5. It's not just about price - you're checking whether each builder has understood what you actually need.
My Builder Changed the Price After Starting - What Can I Do?
If your builder has increased the price after work started, here's what's legitimate, what's not, and what the law says you can do about it.
My Builder Wants 50% Deposit - Is That Normal?
A 50% deposit is not normal. Most builders ask for 10-15% upfront. Here's what's reasonable, when to worry, and how to protect your money.
My Quote Doesn't Mention Building Regs - Should I Be Worried?
If your builder's quote doesn't mention building regulations, it might not be dodgy - but you need to ask. Here's what building regs cost and why they matter.
Should I Pay My Builder in Cash? Why It's Riskier Than You Think
Paying your builder in cash is legal - but risky. No paper trail, no receipt, no comeback. Here's why bank transfer is always the smarter choice.
Building Costs in Scotland 2026: Regional Price Guide
What does building work cost in Scotland in 2026? Regional price guide with trade-by-trade breakdowns from £22,000–£100,000 by project type and area.
Building Costs in the South East 2026: Regional Price Guide
How much does building work cost in South East England in 2026? Extensions from £32,000 to £145,000, with county-level breakdowns and trade-by-trade detail.
Extension Cost in London 2026: What You'll Actually Pay
What does a home extension cost in London in 2026? From £36,000 to £170,000 depending on size and spec - with trade-by-trade breakdowns and borough-level detail.
Extension & Loft Conversion Costs in the North of England 2026
How much do extensions and loft conversions cost in Northern England in 2026? Regional prices from £21k-£95k across the North West, North East and Yorkshire.
Home Improvement Costs in Wales 2026: What You'll Actually Pay
What does home improvement cost in Wales in 2026? Regional guide with costs by project type and area, from £20,000–£90,000 for extensions, kitchens, and more.
Renovation Costs in the Midlands 2026: What You'll Actually Pay
Extension costs £36k–£110k in the Midlands. Loft conversion £24k–£65k. Full 2026 price guide with trade-by-trade breakdowns for Birmingham, Nottingham, Leicester, and Coventry.
Fixed Price vs Day Rate: Which Is Better When Hiring a Builder?
Should you pay your builder a fixed price or a day rate? We break down the pros, cons, and real-world scenarios - so you pick the right approach for your project.
Loft Conversion Cost UK 2026: The Complete Price Guide
What does a loft conversion actually cost in 2026? We break down the numbers by type, size, and region - with trade-by-trade detail so you know exactly where your money goes.
5 Things Every Homeowner Should Check Before Hiring a Builder
A practical checklist for vetting builders in the UK - from insurance and references to spotting red flags in quotes. Don't sign until you've checked these five.
How Much Does a Boiler Replacement Cost in 2026?
Combi boiler installed: £2,200–£3,500. System boiler: £2,500–£4,000. What drives the price, which brands to avoid, and 5 fees engineers add on.
The Hidden Costs of Home Renovations (And How to Budget for Them)
Party wall fees, building control, skip hire, temporary accommodation... the costs that never appear on a builder's quote but still hit your bank account. Budget for these first.
7 Warning Signs Your Builder Is Overcharging (And What to Do About It)
Worried your builder's quote is too high? These 7 red flags give it away, with real price benchmarks and what to do if you spot them.
Builder's Quote vs Estimate - What's the Difference?
Quotes and estimates aren't the same thing. One is legally binding, the other isn't. Here's what that means for your building project - and your wallet.
Is My Builder's Quote Too Expensive? How to Tell
How to tell if a builder's quote is fair - cost per m² benchmarks by project type, regional multipliers, and the scope traps that make cheap quotes expensive.
What Should a Builder's Quote Include? The Full Checklist
Got a builder's quote but not sure if it covers everything? Here's the 15-point checklist, plus the items most builders deliberately leave out.
How to Read a Builder's Quote (Without Getting Lost)
A plain-English guide to understanding construction quotes - what each section means, red flags to watch for, and how to compare like-for-like.
Kitchen Extension Costs in 2026: The Real Numbers
What does a kitchen extension actually cost in 2026? We break down the numbers by size, spec, and region - with trade-by-trade detail.
Planning Permission in 2026: What You Actually Need to Know
Most single-storey extensions don't need planning permission. Check the permitted development rules for extensions, lofts, porches, and outbuildings. Plain English, updated March 2026.
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