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Independent historical sold-price evidence from HM Land Registry for England and Wales.

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© 2026 UK House Prices. Data sourced from HM Land Registry.

Contains HM Land Registry data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.

Area guide

SW1Y area guide — property prices & local market

Everything you need to know about buying property in the SW1Y postcode area, covering London and surrounding areas. All price data sourced from HM Land Registry — updated July 2026.

SW1Y area price snapshot

Average price

£3,467,994

Median price

£3,440,000

5-year trend

+217.1%

Total sales

710

The SW1Y area has 79 individual postcodes with 710 registered sales. Prices are +774.0% above the national average, with the largest concentration in London. The five-year price movement is +217.1%.

About London

The capital offers unparalleled transport connectivity, cultural institutions and employment opportunities across zones 1–6.

🚆 Main station

Multiple (Paddington, Euston, Kings Cross, Liverpool Street, etc.)

⏱️ London commute

Local (London)

View full London property data →

Market context

With an average of £3,467,994, the SW1Y area sits in the premium price bracket, +774.0% above the national average. Premium pricing typically reflects location desirability, transport connectivity and local amenities. The dataset includes 710 recorded sales across 79 postcodes.

The five-year price trend in SW1Y is +217.1%, significantly outpacing many other areas. This level of growth may reflect improving local amenities, transport links or broader regeneration.

Buying tips for SW1Y

  • 💰Check mortgage affordability early. Premium areas often require larger deposits. Get a mortgage Agreement in Principle before making offers to strengthen your position with sellers.
  • 🏫School catchments affect values. In premium areas, proximity to Outstanding-rated schools can add 10-20% to property prices. Use the local Ofsted data alongside sold prices.
  • 🧮Factor in Stamp Duty. Use the Stamp Duty Calculator to estimate purchase costs based on the average price in SW1Y.
  • 🏘️Explore London. Much of the SW1Y activity centres on London. Check the town-level data for more granular market analysis.
  • 💡Check individual postcodes. Average prices can mask significant variation between postcodes in the SW1Y area. Browse the individual postcode pages to find properties that match your budget.
  • 💡Compare asking prices to sold prices. Use the Asking Price Checker to see whether a listing price aligns with local sold-price evidence.
  • 💡Use sold prices as evidence, not valuation. Historical data helps you understand market trends but does not replace a professional valuation by a qualified surveyor.

Top postcodes in SW1Y

SW1Y 6HR

£651,426 avg · 75 sales

SW1Y 4JH

£2,649,397 avg · 58 sales

SW1Y 6BL

£445,148 avg · 46 sales

SW1Y 5LU

£1,009,890 avg · 41 sales

SW1Y 4EH

£322,771 avg · 37 sales

SW1Y 4HA

£445,815 avg · 34 sales

SW1Y 4DL

£242,711 avg · 32 sales

SW1Y 6JX

£390,567 avg · 29 sales

SW1Y 6NP

£1,513,410 avg · 27 sales

View all 79 postcodes in SW1Y →

Useful tools for SW1Y buyers

🧮

Stamp Duty ~£329,909

Avg £3,467,994 in SW1Y

Full guide →

📊

Asking Price Checker

Compare asking prices with sold-price evidence

📖

Stamp Duty Guide

Complete 2025 SDLT, LTT & LBTT guide

⚖️

Location Comparison

Compare SW1Y with other areas

🏘️

London data

Full town-level property statistics

About this guide

This SW1Y area guide is based on HM Land Registry Price Paid Data, covering registered residential property sales in England and Wales from January 1995 onwards. All figures are historical sold prices, not current valuations or asking prices.

Data last updated: July 2026 · View methodology

Frequently asked questions

What is the average house price in SW1Y?

The average sold price in the SW1Y postcode area is £3,467,994, based on 710 HM Land Registry transactions. The largest town in this area is London.

How do SW1Y house prices compare to the UK average?

Properties in SW1Y average £3,467,994, which is +774.0% above the national average of £396,803 for England and Wales.

Is SW1Y affordable compared to other postcode areas?

SW1Y is +774.0% above the national average of £396,803 for England and Wales. The area covers 79 postcodes.

How have SW1Y house prices changed over 5 years?

Prices in SW1Y have moved +217.1% over five years, reflecting broader UK house price growth. The large sample size gives confidence in this trend.

Are these area guide prices valuations or asking prices?

No. All figures on this page are historical completed sale prices from HM Land Registry Price Paid Data. They are not current valuations, estate agent asking prices, or financial advice. Always seek professional advice before making property decisions.

Related guides

Asking Price vs Sold Price in the UK

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How to Use Sold Prices When Making an Offer

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Down Valuations: What to Do

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View all guides →