Seabrink, Flat 6, 46 Undercliff Gardens, Leigh On Sea, SS9 1EA
About Seabrink
Seabrink is a two-bedroom semi-detached house in Leigh On Sea (SS9 1EA). It has a recorded floor area of 84 m² (around 904 sq ft) and construction records dating it to 1967-1975. At 84 m² this is the 2nd smallest of 14 units on EPC record in Seabrink, where floor areas span 82–112 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (October 2021) shows a C (score 74). The rating has held steady at C across 2 certificates since April 2011. Between certificates, lighting went from Average to Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.
Most recent transfer: February 2022 at £607,500. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 1998–2022, sale prices on this property compounded at 7.5% per year. On a £-per-square-foot basis, the last sale (£672/sq ft) was about 92.6% above the typical sold price in the postcode. One historical planning record sits against the property in 2018.
Know exactly what you're buying at Seabrink
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
- Bathrooms2
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Planning history
- Oct 2018FullIn report
Install part cladding/part render to South Elevation of East Block
- Documents
- 9 docs on file
- Reference
- 18/01421/FUL
We flagged 1 thing worth checking at Seabrink
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
Price for Seabrink has grown more than fourfold since the 1998 starting point.
£563,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.5% per year over 24 years.
£607,500
Growth on file: 7.5% per year over 24 years.
Sales timeline
23 February 2022Most recent
£607,500
+104.2%over 9 years21 June 2012
£297,500
+6.3%over 7 years3 August 2004
£279,995
+154.5%over 5 years17 August 1998
£110,000
Median price across the last 5 sales in SS9 1EA: £405,000 (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
£318,000Chalkwell Bay, Flat 14, Undercliff Gardens, Leigh On Sea, SS9 1EA
Sold Jul 2021
£295,000Seabrink, 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 Seabrink, 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
On price per m², Seabrink stands well clear of the street.
Price per m²
£7,232
Street avg £4,094
Floor Area
84 m²
Street avg 76 m²
Habitable Rooms
4 rooms
Street avg 3 rooms
CO₂ Emissions
2.3 t/year
Street avg 2.7 t/year
Similar properties nearby
9 11, Flat 5, Broadway
SS9 1PA
109 111, Flat 4, Broadway
SS9 1PG
All Hallows Court, Flat 1, 51 Grand Parade
SS9 1DT
9 11, Flat 1, Broadway
SS9 1PA
9 11, Flat 8, Broadway
SS9 1PA
9 11, Flat 4, Broadway
SS9 1PA
113 115, Flat 2, Broadway
SS9 1PG
3a, Flat 5, West Street
SS9 1QG
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