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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 85 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
85
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
32.6(+7%)
Anti-social behaviour
26.34(-1%)
Other theft
11.09(-5%)
Vehicle crime
8.21(-15%)
Public order
7.62(+14%)
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 179 recent sales, the median property price is £450,000 in St Mark's & Seething Wells area, with individual transactions ranging from £138,000 up to £1,750,000.

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, sales count, and percentile information for each property type in St Mark's & Seething Wells over the last year.
TypeSalesMedian
Detached5£1,295,000
Flats136£420,000
Semi-Detached27£810,000
Terraced11£680,000

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

KT64DA

Grove Road

KT64HR

Portsmouth Road

KT64HY

Portsmouth Road

KT64JZ

Victoria Road

KT64LD

Victoria Road

KT64TU

Surbiton Hill Road

KT58AS

Cranes Park

KT64BU

Grove Road

KT64DG

St Leonards Square

KT64EF

St Andrews Square

KT64HG

Portsmouth Road

KT64LJ

St Mark's & Seething Wells

KT64SU

Adelaide Road

KT64UG

Church Hill Road

KT64TF

Selsdon Close

KT58BY

Cranes Park Avenue

KT64AT

Maple Road

KT58AQ

Cranes Park

KT64AH

Cleaveland Road

KT64BY

Grove Road

KT64SN

Avenue Elmers

KT58BU

Cranes Park Avenue

KT64EB

St Andrews Square

KT64NQ

St Mark's & Seething Wells

KT65DW

Victoria Avenue

KT58AT

Grove Footpath

KT64HT

Portsmouth Road

KT58BX

Cranes Park Avenue

KT64SG

Avenue Elmers

KT58AG

Cranes Park

KT64BP

Falconhurst

KT64HB

Catherine Road

KT64QG

Ravens Close

KT58BL

Cheyne Hill

KT64HH

St Mark's & Seething Wells

KT58AZ

Lamberts Road

KT58BQ

Eversley Road

KT64AJ

Cleaveland Road

KT64AR

Maple Road

KT64EL

Westfield Road

KT64HU

Portsmouth Road

KT64NP

Crummock Chase

KT65NP

Seething Wells Lane

KT12LH

Uxbridge Road

KT13FF

Harlow Gardens

KT58AA

Lamberts Road

KT58BD

Villiers Avenue

KT64DR

Maple Road

KT64LQ

St Marks Hill

KT64SQ

Avenue Elmers

KT65BG

Indigo Square

KT13BN

Lower Marsh Lane

KT58AB

Cranes Park

KT64EH

The Mall

KT64HE

Catherine Road

KT64ST

Adelaide Road

KT65PT

Portsmouth Road

KT13BJ

Lower Marsh Lane

KT58BE

Villiers Avenue

KT58BG

Eversley Road

KT64AQ

St Mark's & Seething Wells

KT64DD

Grove Road

KT64RX

Claremont Road

KT65JL

Endsleigh Gardens

KT58DW

Addison Gardens

KT64BH

St Mark's & Seething Wells

KT64FD

Portsmouth Road

KT64HQ

Portsmouth Road

KT64AU

Maple Road

KT64BF

St Leonard's Road

KT64JB

Catherine Road

KT64QQ

Newmans Lane

KT58AL

Cranes Drive

KT64EA

St Andrews Square

KT65LR

Brighton Road

KT12TJ

Beaufort Road

KT64AA

Maple Road

KT64FF

St Mark's & Seething Wells

KT64HA

Catherine Road

KT64PJ

St Marks Hill

KT64TS

Surbiton Hill Road

KT65NJ

Brighton Road

KT65NX

Hastings Drive

KT12LJ

Uxbridge Road

KT64DE

St Leonards Road

KT64QL

St James Road

KT64TE

Adelaide Road

KT58AR

Cranes Park

KT58DH

Minniedale

KT64AZ

Maple Road

KT64LF

St James' Road

KT64RP

Maple Road

KT64TP

Surbiton Hill Road

KT64JG

St Marys Road

KT64LP

St Marks Hill

KT64PE

Glenbuck Road

KT64RH

Claremont Road

KT64TG

Adelaide Road

KT65AW

Brighton Road

KT64AB

Maple Road

Data Sources

All data is sourced from official UK government agencies and public datasets. Last updated: 16/01/2026.