Budget
£18,300
- Focused essentials
- Practical finishes
Extension vs Conservatory Costs in London
Estimates derived from UK trade benchmark data and regional labour indices, updated May 2026. Methodology →
Extension vs Conservatory in London typically lands above the UK-wide average for the same spec. We start from our national guide ranges and reflect the labour and logistics pressure you usually see in the capital.
In London, labour and logistics costs are typically highest across UK regions. For the full UK-wide baseline, compare with Extension vs Conservatory Cost UK.
Renovating in London means paying for logistics as much as labour. Trades price the congestion charge, ULEZ-compliant vans, paid parking and slow cross-town travel into their day rates, and anything arriving by skip or grab lorry usually needs a council licence and often a parking-bay suspension on top. The premium concentrates in labour — materials cost much the same as anywhere — which is why labour-heavy trades show the biggest London mark-ups.
The stock shapes the work: inner London is dominated by Victorian and Edwardian terraces, many split into leasehold flats, so freeholder consent, licence-to-alter paperwork and party-wall notices appear on projects that would be consent-free elsewhere. Conservation areas and listed buildings are common in inner boroughs, and access — no driveway, no lift, nowhere to store materials — quietly adds days to almost every job.
Programme is the hidden London budget line. Parking suspensions need lead time to arrange, freeholder consents take weeks, and party-wall notices give neighbours a fortnight to respond before anything can start — so London projects reward owners who run the paperwork in parallel while quotes are still coming in, rather than sequentially after picking a builder.
Two ways to take action on Extension vs Conservatory costs
Pick the path that fits where you are — running early numbers, or pressure-testing a quote you've already got.
Typical London extension vs conservatory budgets
Three planning tiers for extension vs conservatory in London, with scope and a representative figure for each. Run your own numbers in the calculator for a tailored range.
Mid-rangeMost common
£34,000
- Balanced specification with core upgrades
- Reliable materials
Premium
£62,000
- Premium materials
- Wider scope with higher coordination demands
Typical regional cost ranges
| Item | Cost Range |
|---|---|
| Conservatory (lean-to, small) | £9,800 – £18,300 |
| Conservatory (medium) | £14,600 – £27,000 |
| Orangery / solid roof conservatory | £24,500 – £55,000 |
| Single-storey extension (15 m²) | £27,000 – £55,000 |
| Single-storey extension (25 m²) | £42,500 – £79,500 |
At the mid-range, extension vs conservatory in London benchmarks around £34,000 — around 22% above the UK average. That is roughly 30% above North East England (£26,500), the UK's most affordable region for the same spec. Next door, South East England comes in around £31,500 and East of England comes in around £29,500.
How extension vs conservatory costs vary across London
London is not one price. Across the postcode areas we track, Central London quotes typically run 23% higher than Romford for the same spec — these are the benchmarks by area:
| Area | Postcodes | vs UK average | Typical mid-range | Budget–premium span |
|---|---|---|---|---|
| Central London | WC | +40% | £39,000 | £11,200–£91,000 |
| City of London | EC | +38% | £38,500 | £11,000–£89,500 |
| South West London | SW | +38% | £38,500 | £11,000–£89,500 |
| West London | W | +38% | £38,500 | £11,000–£89,500 |
| East London | E | +32% | £37,000 | £10,600–£86,000 |
| North West London | NW | +32% | £37,000 | £10,600–£86,000 |
| Uxbridge | UB | +18% | £33,000 | £9,400–£76,500 |
| Bromley | BR | +16% | £32,500 | £9,300–£75,500 |
| Croydon | CR | +16% | £32,500 | £9,300–£75,500 |
| Enfield | EN | +16% | £32,500 | £9,300–£75,500 |
| Sutton | SM | +16% | £32,500 | £9,300–£75,500 |
| Romford | RM | +14% | £32,000 | £9,100–£74,000 |
Plus 6 more postcode areas between these ends of the range. Run the calculator with your postcode for a range tuned to your area.
Mini Extension vs Conservatory cost calculator
Three quick inputs and we'll email you an indicative range. Run the full calculator for a postcode-adjusted estimate.
Checking a London extension vs conservatory quote?
What a fair extension vs conservatory quote should itemise doesn't change by region — only the prices do. The full checklist, red flags and scripts live in our UK guide, benchmarked against the London figures above:
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