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St Mark's & Seething Wells

Interactive map displaying St Mark's & Seething Wells

About

St Mark's & Seething Wells is a residential ward located along the Thames in southwest London. The area is characterised by its mix of Edwardian and Victorian terraced housing, alongside modern apartment developments. Its western boundary is defined by the Hogsmill River, which flows into the Thames. The ward includes the largely industrial area of Thames Side, containing waste transfer stations and a water treatment works.

A distinctive feature is the historic Seething Wells waterworks, with its preserved filter beds now forming a secluded, biodiverse sanctuary for wildlife. The Thames Path national trail runs through the ward, providing public access to the riverfront. Surbiton Lagoon, a popular open-air swimming pool, is a key local leisure facility situated near the waterfront.

Area overview

On average St Mark's & Seething Wells has moderate deprivation and moderate crime levels, with around 86 crimes per 1,000 residents per year. Approximately 6.4% of homes in this area are social housing provided by a local council or housing association. The average income per household in St Mark's & Seething Wells is £86,564 per year. There are 3 schools in St Mark's & Seething Wells: 2 primary (1 Outstanding and 1 Good) and 1 secondary (0 Outstanding and 1 Good). On average most houses in area has average public transport connectivity. St Mark's & Seething Wells is home to around 11,809 people, with a population density of about 6,506.3 per km2.

Crime rate
4/10
Crimes per 1k residents
86
Deprivation level
3/10
Income level
8/10
Social housing
6.4%
Connectivity
6/10

Area Profile

St Mark's & Seething Wells Population
11,809
Population density
6,506.3 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
32.52(+5%)
Anti-social behaviour
28.37(+6%)
Shoplifting
11.09(+11%)
Vehicle crime
10.33(+10%)
Other theft
9.74(-15%)
London average

Demographics

Ethnic groups

British
6,780
57.41%
Other White
1,933
16.37%
Other Asian
463
3.92%
Indian
435
3.68%
Other
320
2.71%
Total population: 11,810

Economics

Education (age 16+)

Level 4 qualifications or above
6,323
62.11%
Level 3 (A level)
1,696
16.66%
No qualifications
700
6.88%
Level 2 (GCSEs 9-4)
693
6.81%
Level 1 (GCSEs 3-1)
378
3.71%
Total 16+ residents: 10,181

Housing

Housing tenure

Private landlord or letting agency
2,157
40.39%
Owns with a mortgage
1,546
28.95%
Owns outright
1,153
21.59%
Other social rented
233
4.36%
Other forms of private rent
122
2.28%
Total households: 5,341

Property prices in St Mark's & Seething Wells

Based on 166 recent sales, the median property price is £445,500 in St Mark's & Seething Wells area, with individual transactions ranging from £138,000 up to £2,150,000.

Price distribution per property type (last year)

Price distribution by property type for St Mark's & Seething Wells in the last year.

Median sale price and percentiles per property type (last year)

Median sale price, median price per square metre, sales count, and percentile information for each property type in St Mark's & Seething Wells over the last year.
TypeSalesMedianMedian £/m²
Detached2£1,722,500£6,632
Flats126£407,900£6,704
Semi-Detached22£842,601£8,014
Terraced16£710,000£8,289

10 years median price trend in St Mark's & Seething Wells

Ten year median sale price trend for each property type in St Mark's & Seething Wells.

All postcodes in St Mark's & Seething Wells

KT64QH

St James Road

KT13FN

Harlow Gardens

KT64PR

St Marks Hill

KT64DY

North Road

KT64JF

Old Post Office Walk

KT65LR

Brighton Road

KT13FL

Harlow Gardens

KT64TA

Adelaide Road

KT64HW

Portsmouth Road

KT64JA

Portsmouth Road

KT58BP

Cranes Park Avenue

KT65NW

Brighton Road

KT58DE

Burney Avenue

KT64SN

Avenue Elmers

KT64UG

Church Hill Road

KT64ED

St Andrews Square

KT64EW

Victoria Road

KT64DS

Evesham Terrace

KT64PT

St Marks Hill

KT12LN

Surbiton Crescent

KT64EL

Westfield Road

KT64QZ

St Mark's & Seething Wells

KT65NP

Seething Wells Lane

KT64SW

Ardmay Gardens

KT58DD

Minstrel Gardens

KT64SE

Avenue Elmers

KT64HF

Catherine Road

KT58DG

Guilford Avenue

KT12HP

Kings Keep

KT64LQ

St Marks Hill

KT64SS

Adelaide Road

KT12LS

Uxbridge Road

KT12TR

Fassett Road

KT64BH

St Mark's & Seething Wells

KT64RY

Claremont Road

KT64QQ

Newmans Lane

KT64AB

Maple Road

KT64FE

St Mark's & Seething Wells

KT58AQ

Cranes Park

KT64DG

St Leonards Square

KT64ES

St Mark's & Seething Wells

KT13BN

Lower Marsh Lane

KT65NX

Hastings Drive

KT64JU

Victoria Road

KT64TQ

Adelaide Road

KT64UF

Spencer House

KT64TJ

Avenue Elmers

KT58BU

Cranes Park Avenue

KT64SR

Adelaide Road

KT64AD

St Mark's & Seething Wells

KT58DR

Hillside Road

KT64DT

St Andrews Road

KT64DX

St Philips Road

KT64SL

Avenue Elmers

KT64DP

Grove Road

KT64GS

Avenue Elmers

KT64AH

Cleaveland Road

KT64EQ

The Mall

KT64HX

Portsmouth Road

KT58AR

Cranes Park

KT65DL

Victoria Avenue

KT64TF

Selsdon Close

KT58AH

Cranes Park

KT64HA

Catherine Road

KT64HN

Ravens Ait

KT65NT

Electric Parade

KT65LX

Brighton Road

KT64JH

Cottage Grove

KT58AW

Cranes Park Crescent

KT64LR

St Marks Hill

KT64DJ

Cadogan Road

KT64LF

St James' Road

KT58DX

Minstrel Gardens

KT58AP

Cranes Park

KT64JX

St Mark's & Seething Wells

KT64AW

Maple Road

KT64LU

St Marks Hill

KT64AZ

Maple Road

KT64RF

Claremont Road

KT13FF

Harlow Gardens

KT58AL

Cranes Drive

KT64HL

Catherine Road

KT64SX

Adelaide Road

KT13FH

Harlow Gardens

KT64FF

St Mark's & Seething Wells

KT58DF

Burney Avenue

KT64PY

The Sheraton

KT65NJ

Brighton Road

KT64EG

St Andrews Square

KT58BQ

Eversley Road

KT64NP

Crummock Chase

KT64FG

St Andrews Road

KT65PR

Brighton Road

KT64NQ

St Mark's & Seething Wells

KT58BW

Chumleigh Walk

KT58DQ

Guilford Avenue

KT58AT

Grove Footpath

KT64LJ

St Mark's & Seething Wells

KT58BT

Cranes Park Avenue

KT64EE

St Andrews Square

Data Sources

All data is sourced from official UK government agencies and public datasets. Last updated: 01/07/2026.