Realistic 2026 cost breakdowns for renovation and construction projects in London. No fluff, real numbers, what drives the price.
How much does a basement conversion cost in London? From ~£5,000, most £7,700–14,000, around £220–£570/m². Full 2026 breakdown: underpinning, waterproofing, party wall.
Read article →How much does a bathroom renovation cost in London? Budget from ~£500, most mid-range £900–£1,700, high-end £1,700–£3,300+. Full 2026 breakdown by element, plus what drives London prices.
Read article →How much does it cost to renovate a townhouse in London? Light refurb from ~£12/sq ft, full prime £30–£50/sq ft, super-prime £50–£75+/sq ft. Full 2026 breakdown for Kensington, Chelsea and prime central townhouses.
Read article →Glass extensions in London cost £11-20k+ for a 15-25 sqm build. Full guide: design, structural glass, costs, planning, when they're worth it.
Read article →Glass roof extension cost vs glass box vs frameless vs side-return — real 2026 London £ ranges for each type, plus what drives the price within each.
Read article →What a full house refurbishment costs in London in 2026 — standard, high-spec and premium tiers with real per-m² ranges, plus listed-building rules.
Read article →How much does a kitchen renovation cost in London? Budget from ~£900, most mid-range £2,200–£4,300, high-end £4,300–£9,000+. Full 2026 breakdown by element, plus the knock-through and extension cost factor.
Read article →How much value does a loft conversion really add in London? 2026 ROI data by borough, conversion type, and bedroom count. Plus what reduces ROI.
Read article →Comparing rear and side-return extensions on London terraces — which adds more space, costs less, and adds more value? 2026 ranges and decision framework.
Read article →Why two London extensions of the same size can cost £4,000 or £9,300. The 11 cost drivers explained — plus realistic 2026 ranges by extension type.
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