11 Cliffsea Grove, Leigh On Sea, SS9 1NG
About 11 Cliffsea Grove
11 Cliffsea Grove is a four-bedroom detached house in Leigh On Sea (SS9 1NG). It has a recorded floor area of 224 m² (around 2411 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (July 2022) shows a C (score 78), near the top of the C band. When first surveyed in November 2014 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while roof efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 83). The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal.
At 224 m² the property is well over the postcode median (89 m² across 25 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. 4 bedrooms is on the larger side for this postcode, where 2 is the typical count. 4 planning records sit against the property, 2 approved, 1 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. Across 2015–2022, sale prices on this property compounded at 18.4% per year. On a £-per-square-foot basis, the last sale (£496/sq ft) was about 91.5% above the typical sold price in the postcode. Most recent transfer: October 2022 at £1,195,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 11 Cliffsea Grove
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
- Bedrooms4
- Bathrooms4
- Open-plan layoutYes
- EnsuiteYes
- StudyYes
Outside
- GarageYes
Building
- Underfloor heatingYes
Energy performance
11 Cliffsea Grove ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Single glazing replaced with double or better glazing
Wall insulation improved
More low energy lighting installed
Planning history
- Jul 2017RenovationAmendmentIn report
Replace plan numbers 02B and 03B with plan numbers 02C and 03C, alter rooflight and rear first floor windows and remove brick quoin at front (Non-Material Amendment to Planning Permission 15/01350/AMDT dated 02.10.2015)
- Agent
- RD Consulting
- Documents
- 5 docs on file
- Reference
- 17/01123/NON
- Oct 2015AmendmentIn report
Application to vary condition 02 drawings numbers; 08/07/201514525/02 rev B, 14525/03 rev B, 14525 SK13 and 14525 SK14 change in design to form rooms in roof of planning Permission 15/00740/FULH dated 08/07/2015
- Agent
- RD Consulting
- Documents
- 11 docs on file
- Reference
- 15/01350/AMDT
We flagged 1 thing worth checking at 11 Cliffsea Grove
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
Latest sale on 11 Cliffsea Grove was the highest on Land Registry record across the postcode.
£1,193,000
Modelled from EPC, postcode comparables and a sale-price growth of 18.4% per year over 8 years.
£1,195,000
Growth on file: 18.4% per year over 8 years.
Sales timeline
27 October 2022Most recent
£1,195,000
+267.7%over 7 years11 February 2015
£325,000
Median price across the last 5 sales in SS9 1NG: £465,000 (2025–2024).
Nearby sales in SS9 1NG
19 Cliffsea Grove, Leigh On Sea, SS9 1NG
Sold Sept 2025
£465,00027b, Cliffsea Grove, Leigh On Sea, SS9 1NG
Sold Dec 2024
£170,00067 Cliffsea Grove, Leigh On Sea, SS9 1NG
Sold Sept 2024
£590,00059 Cliffsea Grove, Leigh On Sea, SS9 1NG
Sold Sept 2024
£377,50061 Cliffsea Grove, Leigh On Sea, SS9 1NG
Sold Sept 2024
£586,250
Everything we know about 11 Cliffsea Grove, 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 Cliffsea Grove homes
11 Cliffsea Grove outperforms the street on epc rating by a wide margin.
Price per m²
£5,335
Street avg £3,912
Floor Area
224 m²
Street avg 104 m²
Habitable Rooms
8 rooms
Street avg 5 rooms
CO₂ Emissions
4.7 t/year
Street avg 5.6 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
Leigh Cliff Road — bus stop.
Closest school
0.6 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
50.6dB

Night-time· 23:00 – 07:00
39.9dB