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Buying at SW4 0AY

Before you offer on a home at SW4 0AY: the checks to raise with your surveyor and conveyancer, whether an asking price stands up against what sold nearby, how prices here have moved since 1995, what it costs to run a home, and a buyer's report for every home on the postcode.

2 things to raise before an offer, and a street where the typical sale was £670k. In Clapham Old Town.

2 to check3 clear£670k typical on Venn Street

The checklist

Before you make an offer

Check
Ground: shrink-swell clay (subsidence) significantBGS rates the wider 5 km area for these; it describes the area, not the plot. Mention it to your surveyor, especially for an older home or big trees near the house.
Check
Busy road: A3, 170 m awayAbout 25,155 vehicles a day in 2025 (DfT traffic counts).
Note
Conservation area: ClaphamChanges to the outside and work on trees usually need consent. Ask whether past alterations had permission.
Note
22 listed buildings within 200 mIf the home itself is listed, most changes inside and out need consent: check the National Heritage List.
Note
Noise above WHO guidelines: aircraft 50 dB (Heathrow)24-hour averages from Defra's 2022 noise maps (England). Visit at rush hour and at night.
Note
Inside London's ULEZOlder vehicles that don't meet its standards pay a daily charge to drive here.
Clear
No coal mining riskOutside the Coal Authority's coalfield.
Clear
No river or sea flood risk recordedNot in the Environment Agency's high or medium risk areas. Surface water isn't included: check the exact address on GOV.UK.
Clear
Gigabit broadband100% of premises in the postcode can get it (Ofcom).

Xoserve, UKHSA/BGS radon atlas, BGS GeoSure, Coal Authority, Environment Agency (© Environment Agency copyright and/or database right 2026), Defra noise maps, Historic England, Ofcom, council planning registers (OGL). For a particular home, its buyer's report (below) adds tenure, energy rating, age and extensions.

Price

Is the asking price fair?

£670ktypical sale on Venn Street, last 10 years

£9,348typical price per m² in Clapham Old Town

£8,900per m² for homes at SW4 0AY sold since 2015

Multiply a home's floor area (on its energy certificate) by £9,348 for a neighbourhood benchmark: 90 m² comes to about £841k. Check an asking price.

HM Land Registry sold prices; floor areas from energy certificates.

Trend

Prices in Clapham Old Town

Clapham Old Town

−0% over ten years (2015 to 2025).

Typical (median) sale price each year, all home types, HM Land Registry.

Comparables

What sold nearby in the last two years

Type	Sales	Typical	Range
Detached	1	£640k	£640k – £640k
Semi-detached	2	£5.74m	£2.50m – £5.74m
Terraced	45	£1.07m	£370k – £5.00m
Flat	120	£550k	£149k – £1.94m

Standard sales in Clapham Old Town. Every recent sale.

Running costs

What it costs to live here

A home's own band, energy rating and typical bills are in its buyer's report.

MHCLG council tax; Xoserve gas connections.

Supply

How often homes come up

11sales on Venn Street in the last two years

168sales in Clapham Old Town in the last two years

HM Land Registry standard sales.

Check a home

Buyer's reports for homes at SW4 0AY

Home	Last sold	Floor area
8 Grafton Mansions, 70, Venn StreetFlat	£685,000, Jun 2026	77 m²	Buyer's report →
6, Grafton Mansions, Venn StreetFlat	£228,000, Jun 2000	72 m²	Buyer's report →
2, Grafton Mansions, Venn StreetFlat	£325,000, Aug 2005	76 m²	Buyer's report →
8, Grafton Mansions, Venn StreetFlat	£365,000, Sept 2008	78 m²	Buyer's report →
Flat 4, Grafton Mansions, Venn StreetFlat	£207,338, Mar 2005	–	Buyer's report →
Grafton Mansions, 70, Venn StreetFlat	£675,000, Feb 2014	73 m²	Buyer's report →

Each report: sale history, today's estimate, energy rating, running costs and the questions for your solicitor.

More for buying: Where can I afford? · How much to offer · Buying checklist · Check your documents

Go deeper

Checking this postcode…

Buying at SW4 0AY

2 things to raise before an offer, and a street where the typical sale was £670k. In Clapham Old Town.

2 to check3 clear£670k typical on Venn Street

Before you make an offer

Check

Ground: shrink-swell clay (subsidence) significantBGS rates the wider 5 km area for these; it describes the area, not the plot. Mention it to your surveyor, especially for an older home or big trees near the house.

Check

Busy road: A3, 170 m awayAbout 25,155 vehicles a day in 2025 (DfT traffic counts).

Note

Conservation area: ClaphamChanges to the outside and work on trees usually need consent. Ask whether past alterations had permission.

Note

22 listed buildings within 200 mIf the home itself is listed, most changes inside and out need consent: check the National Heritage List.

Note

Noise above WHO guidelines: aircraft 50 dB (Heathrow)24-hour averages from Defra's 2022 noise maps (England). Visit at rush hour and at night.

Note

Inside London's ULEZOlder vehicles that don't meet its standards pay a daily charge to drive here.

Clear

No coal mining riskOutside the Coal Authority's coalfield.

Clear

No river or sea flood risk recordedNot in the Environment Agency's high or medium risk areas. Surface water isn't included: check the exact address on GOV.UK.

Clear

Gigabit broadband100% of premises in the postcode can get it (Ofcom).

Is the asking price fair?

£670ktypical sale on Venn Street, last 10 years

£9,348typical price per m² in Clapham Old Town

£8,900per m² for homes at SW4 0AY sold since 2015

Multiply a home's floor area (on its energy certificate) by £9,348 for a neighbourhood benchmark: 90 m² comes to about £841k. Check an asking price.

HM Land Registry sold prices; floor areas from energy certificates.

What homes cost and rent in Clapham Old Town, by size

Size	Typical value today	Cheaper quarter	Estimated rent	Gross yield
1 bed	£431k	£376k	£2,000 a month	5.6%
2 beds	£558k	£462k	£2,400 a month	5.2%
3 beds	£899k	£685k	£3,200 a month	4.3%
4+ beds	£2.08m	£1.53m	£4,000 a month	2.3%
All homes	£670k	£475k	£2,730 a month	4.9%

Values: sales since 2021 of homes with an energy certificate (bedrooms estimated from its rooms), carried to today on the local price index; the cheaper quarter is what a quarter of them go for under. Rents are estimates: the council's typical private rent (ONS) adjusted for how values here compare, or the postcode district's own rent (ONS, London). Gross yield = a year's rent ÷ value, before costs. Compare it with other places