Westmark House, Flat 4, 436 Havant Road, Farlington, Portsmouth, PO6 1AB
About Westmark House
Westmark House is a one-bedroom semi-detached house in Farlington, Portsmouth, Portsmouth (PO6 1AB). It has a recorded floor area of 43 m² (around 463 sq ft) and construction records dating it to 1983-1990. At 43 m² this is the 3rd smallest of 5 units on EPC record in Westmark House, where floor areas span 38–47 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (March 2022) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (May 2009); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 76).
It changed hands recently, sold July 2025 for £140,000. At 43 m² it sits well below the postcode median (83 m² across 23 EPCs), making it one of the more compact homes locally. Across 1997–2025, sale prices on this property compounded at 4.7% per year. Today's modelled estimate of £154,000 is 10% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£302/sq ft) was about 22.7% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Outside
- ParkingYes
Building
- Heating systemGas
Energy performance
EPC Rating
Certificate validity
Valid until 14 March 2032
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency decreased
More low energy lighting installed
Ventilation system changed
More low energy lighting installed
More low energy lighting installed
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Planning history
Westmark House has no planning applications on record.
But the area is active
4 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Westmark House has more than tripled in price since its earliest registered sale in 1997.
£154,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.7% per year over 28 years.
£140,000
Growth on file: 4.7% per year over 28 years.
Sales timeline
17 July 2025Most recent
£140,000
30 January 2018
£140,000
+47.4%over 12 years14 April 2005
£95,000
+150.0%over 8 years23 January 1997
£38,000
Median price across the last 5 sales in PO6 1AB: £385,000 (2026–2023).
Nearby sales in PO6 1AB
Westmark House, Flat 2, 436 Havant Road, Farlington, Portsmouth, PO6 1AB
Sold Jan 2026
£157,000446 Havant Road, Farlington, Portsmouth, PO6 1AB
Sold Aug 2024
£455,000468 Havant Road, Farlington, Portsmouth, PO6 1AB
Sold Mar 2024
£385,000460 Havant Road, Farlington, Portsmouth, PO6 1AB
Sold Jan 2024
£380,000Westmark House, Flat 3, 436 Havant Road, Farlington, Portsmouth, PO6 1AB
Sold Nov 2020
£140,000
Versus other Havant Road homes
On floor area, Westmark House stands well clear of the street.
Price per m²
£3,256
Street avg £2,694
Floor Area
43 m²
Street avg 41 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.9 t/year
Street avg 1.7 t/year
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The neighbourhood at a glance
Crime
260/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Andrews Church — bus stop.
Closest school
0.7 km
Solent Infant School. 21 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
54.6dB

Night-time· 23:00 – 07:00
45.4dB







