Property trends for DA15

    DA15 covers the Swanley area in the London Borough of Bromley, in Greater London's outer southeast. It is a suburban district with good transport links and a family-oriented character.

    At a Glance

    Average Property Price - DA15

    £496,569

    80

    National percentile

    Average Monthly Rent - DA

    £1,502

    82

    National percentile

    Average Net Household Income - DA15

    £51,088

    91

    National percentile

    Flat / Maisonette Yield - DA

    6.2%

    82

    National percentile

    10-Year Annualised Price Growth - DA15

    3.9%

    62

    National percentile

    10-Year Annualised Rent Growth - DA

    4.8%

    88

    National percentile

    Property Price & Volume Trends

    The latest average property price of £497,000 places DA15 among the most expensive postcodes nationally. Over the past decade, prices have grown by 3.9% annually—a pace slightly above the national median. Transaction activity has eased recently, with 381 sales in the latest full year compared to a 10-year average of 429, suggesting a modest slowdown in market momentum.

    Rent & Yield Trends

    Monthly rents in the broader DA postcode area average £1,502, positioning the area among the most expensive for tenants nationally. Rental growth over ten years has averaged 4.8% annually—well above the national rate, reflecting strong and sustained demand. The flat yield currently stands at 6.2%, a meaningful improvement on the 10-year average of 5.0%, indicating that rental income relative to purchase prices has strengthened notably.

    Income & Affordability Trends

    Average household income of £51,088 ranks well above the national average, placing the area among the most affluent nationally. The price-to-income ratio of 9.2x has deteriorated slightly since 2016 (9.0x), signalling that property values have outpaced wage growth modestly. Rental affordability has also tightened: the rent-to-income ratio has risen from 29.9% in 2016 to 31% today, though it remains within reasonable bounds for the area.

    Resident Demographic Profile

    The age profile is broadly balanced, with a notably higher proportion of adults aged 35–49 (19.5% vs 18.7% nationally). Housing tenure shows a strong emphasis on owner-occupied property: 37.4% own with a mortgage and 35.8% own outright, well above national averages, while private renting (18.1%) and especially social renting (7.4%) are below the national norm. The employment mix is skewed towards professional and administrative roles (21.5% and 14.8% respectively), with underrepresentation in elementary and sales positions, reflecting the area's middle-class character.

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