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Green Diamond, Penthouse 41, Bartholomew Square, Brighton, BN1 1JS

EPC B
Property type
Semi-detached
Floor 3
Floor area
185 m²
1991 sq ft
Energy rating
B
Score 82
Overview

About Green Diamond

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

Green Diamond is a semi-detached house in Brighton (BN1 1JS). It has a recorded floor area of 185 m² (around 1991 sq ft) and construction records dating it to 2020. At 185 m² this is the largest unit on EPC record across Green Diamond (26–185 m²). The building's EPC ratings span D to B, with this unit at the top. The latest certificate (March 2021) returns a B (score 82), comfortably above the UK average. Main heating runs on electricity: electricity, unspecified tariff.

Across 2020–2022, sale prices on this property compounded at 77.8% per year. Today's modelled estimate of £1,017,000 is 18.3% below the 2022 sale of £1,245,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. At 185 m² the property is well over the postcode median (48 m² across 39 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. Last sale on file: £1,245,000 in November 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you decide

Everything you need to know about Green Diamond

The true value, the hidden risks and the full sale history, in one report.

Signs of HMO activity in the areaLarger development activity nearby

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

Green Diamond ranks among the most efficient homes in the postcode for energy use.

EPC Rating

A
B
B82
C
D
E
F
G
Main Heating
Heat Pump
Main Fuel
Electric
Hot Water
Poor
Windows
Very Good
CO2 Emissions
2.6 t/year
Occupancy
—
SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

21st century3rd Floor FlatEPC B

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £1,245 · Includes VAT

Planning

Planning history

Applications and permits filed against Green Diamond, Penthouse 41, Bartholomew Square, Brighton, BN1 1JS, sourced from the PlanIt planning register.

Green Diamond has no planning applications on record.

27

But the area is active

27 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

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

Green Diamond has more than quadrupled in price since its earliest registered sale in 2020.

Current estimate

£1,017,000

Modelled from EPC, postcode comparables and a sale-price growth of 77.8% per year over 3 years.

See how we calculated this
Last sold (2022)

£1,245,000

Growth on file: 77.8% per year over 3 years.

Sales timeline

  1. 1 November 2022Most recent

    £1,245,000

    +398.0%over 2 years

  2. 17 January 2020

    £250,000

Median price across the last 2 sales in BN1 1JS: £300,000 (2016–2016).

On the street

Versus other Bartholomew Square homes

Three headline reads against 39 similar flats on this street, drawn from the latest EPC and Land Registry data.

Floor Area for Green Diamond runs comfortably ahead of the street norm.

EPC Rating

82 (B)

Street avg 75 (C)

Strongly above

Floor Area

185 m²

Street avg 47 m²

Strongly above

CO₂ Emissions

2.6 t/year

Street avg 0.5 t/year

Strongly below
Before you decide

Everything you need to know about Green Diamond

The true value, the hidden risks and the full sale history, in one report.

Signs of HMO activity in the areaLarger development activity nearby

Pick your report · every report is £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£600k

1 Tichborne Street

BN1 1UR

1 bed
£529k

1 Pavilion Mews

BN1 1GX

£485k

1 Daisy Court, 65 Middle Street

BN1 1JG

2 bed1 bath
£485k

1 Ship Street Gardens

BN1 1AJ

3 bed1 bath
£383k

1 Windsor Street

BN1 1RJ

3 bed
£364k

1 Black Lion Lane

BN1 1NL

2 bed
£319k

1 Little East Street

BN1 1HT

£301k

1 Bond Street Laine

BN1 1RT

2 bed1 bath
Area

The neighbourhood at a glance

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

Crime

21/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Pool Valley Coach Station — bus station.

Closest school

0.2 km

Middle Street Primary School. 22 schools nearby.

Go deeper on the local area

A Local Area 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 BN1 1JS from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for BN1 1JS

Daytime· 07:00 – 23:00

58.5dB

Moderate
Night-time road noise heatmap for BN1 1JS

Night-time· 23:00 – 07:00

49.0dB

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 Green Diamond, Penthouse 41, Bartholomew Square, Brighton, BN1 1JS. Each answer is also embedded as structured data for search engines.