Chalkwell Bay, Flat 14, Undercliff Gardens, Leigh On Sea, SS9 1EA
About Chalkwell Bay
Chalkwell Bay is a two-bedroom semi-detached house in Leigh On Sea (SS9 1EA). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (April 2021) shows a C (score 77), near the top of the C band. The rating has held steady at C across 2 certificates since March 2011. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Average to Good and lighting went from Very Poor to Very Good. At 50 m² this is the 3rd smallest of 13 units on EPC record in Chalkwell Bay, where floor areas span 38–91 m². The building's EPC ratings span D to B across 13 units on file.
At 50 m² it sits well below the postcode median (89 m² across 38 EPCs), making it one of the more compact homes locally. Across 1999–2021, sale prices on this property compounded at 8.7% per year. On a £-per-square-foot basis, the last sale (£548/sq ft) was about 62.1% above the typical sold price in the postcode. Last sale on file: £295,000 in July 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at Chalkwell Bay
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms2
- Bathrooms1
Energy performance
Chalkwell Bay's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Windows upgraded, improving insulation
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
Chalkwell Bay has no planning applications on record.
Notable planning nearby
5applications of note in the surrounding area
We flagged 1 thing worth checking at Chalkwell Bay
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
30-day money-back guarantee
Sales history & valuation
Chalkwell Bay has more than quadrupled in price since its earliest registered sale in 1999.
£306,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.7% per year over 22 years.
£295,000
Growth on file: 8.7% per year over 22 years.
Sales timeline
22 July 2021Most recent
£295,000
+514.6%over 21 years4 November 1999
£48,000
Median price across the last 5 sales in SS9 1EA: £525,000 (2025–2021).
Nearby sales in SS9 1EA
Seabrink, Flat 10, 46 Undercliff Gardens, Leigh On Sea, SS9 1EA
Sold Jan 2025
£405,000Chalkwell Bay, Flat 9, Undercliff Gardens, Leigh On Sea, SS9 1EA
Sold Aug 2022
£318,000Seabrink, Flat 6, 46 Undercliff Gardens, Leigh On Sea, SS9 1EA
Sold Feb 2022
£607,500Seabrink, Flat 16, 46 Undercliff Gardens, Leigh On Sea, SS9 1EA
Sold Jun 2021
£525,000Seabrink, Flat 17, 46 Undercliff Gardens, Leigh On Sea, SS9 1EA
Sold May 2021
£532,500
Everything we know about Chalkwell Bay, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area

Versus other Undercliff Gardens homes
Chalkwell Bay outperforms the street on co₂ emissions by a wide margin.
Price per m²
£5,900
Street avg £4,149
Floor Area
50 m²
Street avg 77 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
1.4 t/year
Street avg 2.7 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Grand Parade — bus stop.
Closest school
0.8 km
Chalkwell Hall Infant School. 26 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
45.9dB

Night-time· 23:00 – 07:00
36.9dB