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Westmark House, Flat 4, 436 Havant Road, Farlington, Portsmouth, PO6 1AB

4 sales on record
Property type
Semi-detached
Floor 01
Bedroom
1
Bathroom
1
Floor area
43 m²
463 sq ft
Energy rating
D
Score 68
Tenure
Owner Occupied
Overview

About Westmark House

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

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. On a £-per-square-foot basis, the last sale (£302/sq ft) was about 22.8% above the typical sold price in the postcode.

Before you offer

Know exactly what you're buying at Westmark House

Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.

Already flagged here

Signs of HMO activity in the area
£14.99
Trusted by UK homebuyers

Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms1
  • Bathrooms1

Outside

  • ParkingYes

Building

  • Heating systemGas
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 4)
Mar 2022

EPC Rating

A
B
C
D
D68
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
1.9 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Apr 2012from May 2009
Heating Controls
ThermostatProg + Stat

Heating controls upgraded for better temperature management

Hot Water
Very GoodGood

Hot water efficiency decreased

Low Energy Lighting
0%30%

More low energy lighting installed

Ventilation
ExtractNatural

Ventilation system changed

Nov 2017from Apr 2012
Low Energy Lighting
30%71%

More low energy lighting installed

Mar 2022from Nov 2017
EPC improved fromC71toD68
Low Energy Lighting
71%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against Westmark House, Flat 4, 436 Havant Road, Farlington, Portsmouth, PO6 1AB, sourced from the PlanIt planning register.

Westmark House has no planning applications on record.

Notable planning nearby

4applications of note in the surrounding area

Before you offer

We flagged 1 thing worth checking at Westmark House

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
£14.99

30-day money-back guarantee

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

Westmark House has more than tripled in price since its earliest registered sale in 1997.

Current estimate

£150,000

Modelled from EPC, postcode comparables and a sale-price growth of 4.7% per year over 28 years.

See how we calculated this
Last sold (2025)

£140,000

Growth on file: 4.7% per year over 28 years.

Sales timeline

  1. 17 July 2025Most recent

    £140,000

  2. 30 January 2018

    £140,000

    +47.4%over 12 years
  3. 14 April 2005

    £95,000

    +150.0%over 8 years
  4. 23 January 1997

    £38,000

Median price across the last 5 sales in PO6 1AB: £385,000 (2024–2021).

Before you offer

Everything we know about Westmark House, 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
£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other Havant Road homes

Four headline reads against 10 similar flats on this street, drawn from the latest EPC and Land Registry data.

On years held, Westmark House runs well behind the street norm.

Price per m²

£3,256

Street avg £2,645

Above

Floor Area

43 m²

Street avg 41 m²

Strongly above

Habitable Rooms

2 rooms

Street avg 2 rooms

On par

CO₂ Emissions

1.9 t/year

Street avg 1.7 t/year

Below
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Portsmouth district page.

Crime

9/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

The full report breaks down crime, transport links, schools and air quality in depth.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around PO6 1AB from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for PO6 1AB

Daytime· 07:00 – 23:00

54.6dB

Low
Night-time road noise heatmap for PO6 1AB

Night-time· 23:00 – 07:00

45.4dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about Westmark House, Flat 4, 436 Havant Road, Farlington, Portsmouth, PO6 1AB. Each answer is also embedded as structured data for search engines.