House extension cost UK: the full 2026 price guide
Cost per m² by spec, totals by size, cost by extension type, regional prices, fees, VAT and contingency.
The Pro Calculator UK blog
Plain-English guides on UK money, tax and home-improvement maths — no jargon, just the numbers explained.
Construction
Construction
Single-storey extension cost UK 2026
Price per m² by specification, total cost for 15–50 m², and how rear, side and wrap-around layouts compare.
Construction
Double-storey extension cost UK 2026
Two-storey price per m² of total floor area, 8-region cost table, 7 build stages, fees, VAT, and planning rules.
Construction
Kitchen extension cost UK 2026
Shell cost per m² plus kitchen fit-out, worked examples at 15m², 20m², and 30m², regional tables, and planning rules.
Construction
Side return & side extension cost UK 2026
Why a side return infill and a full side extension cost differently, with 2026 figures for each and the planning rules.
Construction
Does an extension add value? UK 2026
The uplift by room type, the £1.20–£1.50 per £1 rule, and how to work out your own value against the street ceiling price.
Construction
How much does fencing cost in the UK? 2026 prices per metre
Price per metre supplied and fitted, cost by fence type, per-panel prices, labour, old fence removal and the planning rules.
Construction
How much do fencing contractors charge in the UK? (2026 rates)
Day rate vs per-metre vs fixed price, what changes the cost, sole trader vs company, VAT, and how to compare quotes.
Construction
How much does it cost to fence a garden? (2026 UK prices)
Whole-project totals by garden size, a worked example, panel counts, labour, extras like a gate, and what changes the price.
Construction
Fence panel types and sizes: a UK buyer’s guide
Standard 6ft widths and 3ft–6ft heights, the 30mm continental post trap, feather edge vs lap, post sizing and planning rules.
Finance
Income Tax and National Insurance explained
How UK Income Tax bands and National Insurance actually work, with real examples of why take-home pay varies.
Finance
Stamp Duty Land Tax 2026: what you'll actually pay
How SDLT is banded, first-time buyer relief, the additional property surcharge, and when it's actually paid.
Finance
UK mortgage rates explained: fixed vs tracker vs variable
What each mortgage type actually means for your monthly payment, and how to use our repayment calculator to compare them.
Finance
ISA vs pension: where should your money go first?
How ISAs and pensions differ in tax treatment and access, and a simple framework for deciding where to save first.
Finance
Self-employed tax return: what sole traders actually owe
Income Tax, Class 2/4 National Insurance, allowable expenses, and why payments on account catch people out.
Finance
Statutory redundancy pay explained: how much you're owed
Who qualifies, how the age-banded formula works, and how statutory redundancy pay is taxed.
Finance
VAT for small businesses: a plain-English guide
When you need to register, how the rates work, and how to add or remove VAT from a price in seconds.
Construction
How much concrete do I need? A homeowner's guide
Working out volume, mix ratios and bag counts for a slab, post hole or path — before you order materials.
Automotive
Road tax (VED) bands explained: what you'll pay in 2026
How VED is banded by registration date and emissions, the expensive car surcharge, and EV road tax rules.
Health & Fitness
BMI and healthy weight: what the NHS bands actually mean
The four NHS weight bands explained, why adjusted thresholds exist for some groups, and where BMI genuinely falls short.