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12 Southdown Avenue, Brighton, BN1 6EG

Extendable3 sales on record2 planning records

Estimated value

£756,000

  • Since the 2016 sale (£573,000)+32%
  • Against BN1 6EG's recent median (£635,000)+19%

Newest record on this page: March 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Mid terrace
Bedrooms
3
Floor area
107 m²
1152 sq ft
Energy rating
D
Score 67
Council tax
Band D
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£756,000

  • Against its 2016 sale (£573,000)+32%
  • Against BN1 6EG's recent median (£635,000)+19%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 12 Southdown Avenue is modelled from its 107 m² EPC floor area, its 3 recorded sales and recent sales of comparable homes in BN1 6EG. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    107 m² from the EPC lodged in February 2026

  • Sales of this home

    3 sales recorded, the latest in 2016

  • Recent sales in BN1 6EG

    5 sales, median £635,000 (2026–2015)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: March 2026Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 of 2 applicationsFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

Sale price has grown by over 3x since 1999.

Sales timeline

  1. 21 November 2016Most recent

    £573,000

    +45.1%over 4 years

  2. 22 April 2012

    £395,000

    +163.3%over 12 years

  3. 6 May 1999

    £150,000

Median price across the last 5 sales in BN1 6EG: £635,000 (2026–2015).

Risks

What this page doesn't show

2 potential issues have already been flagged for 12 Southdown Avenue, Brighton, BN1 6EG. The detail, evidence and what to ask about it are in the Risks Report.
  • Signs of HMO activity in the areaIn report
  • Larger development activity nearbyIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 12 Southdown Avenue

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

12 Southdown Avenue is a three-bedroom mid-terrace house in Brighton (BN1 6EG). It has a recorded floor area of 107 m² (around 1152 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (February 2026) shows a D (score 67), on the cusp of jumping into the C band. When first surveyed in December 2009 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Average to Good and window efficiency went from Very Poor to Average. The recommended improvements would push it to C (score 78). This certificate was lodged in the last six months, so the rating reflects current condition. Period features are noted in the property record. Our model identifies extension potential, subject to local planning policy.

2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension and new windows, meaningful when judging how the property has evolved. Across 1999–2016, sale prices on this property compounded at 7.9% per year. Today's modelled estimate of £756,000 is 31.9% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£498/sq ft) was about 44.3% above the typical sold price in the postcode. 10 years since the last transfer (November 2016).

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

  • Bedrooms3
  • Dining roomYes
  • EnsuiteYes

Outside

  • Private gardenRear

Building

  • Period featuresYes
  • RefurbishedYes
  • Extension potentialPossible
Before you decide

Everything you need to know about 12 Southdown Avenue

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.

The EPC has just been inspected, so the rating reflects current condition.

Current Certificate(1 of 2)
Feb 2026

EPC Rating

A
B
C
D
D67
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.5 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 1 February 2036

9 years remaining

Property Improvements

Changes detected from historical EPC data

Feb 2026from Dec 2009
EPC improved fromE49toD67
Windows
SingleFull Double

Single glazing replaced with double or better glazing

Walls
Very PoorPoor

Wall insulation improved

Roof
AverageGood

Roof insulation improved

Low Energy Lighting
60%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 12 Southdown Avenue, Brighton, BN1 6EG, sourced from the PlanIt planning register.

12 Southdown Avenue has an approved single-storey rear extension on the planning record.

2 applications on record at 12 Southdown Avenue, Brighton, BN1 6EG

2decisions1extensions13documents9nearby
  1. May 2017
    RenovationFull
    Outcome in report

    Installation of tiles to front gable and replacement of existing softwood windows with double glazed softwood sash windows to front elevation.

    Council
    Preston Park
    New Windows
    Documents
    6 docs on file
    Reference
    BH2017/00857
    Full record in report
  2. More recent applications — locked
  3. ExtensionDecision

Unlock 12 Southdown Avenue, Brighton, BN1 6EG's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (2 on record)
  • All 2 applications on this property in full, plus 9 notable nearby
  • The 13 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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One time fee only - money back guarantee

On the street

Versus other Southdown Avenue homes

Four headline reads against 12 similar houses on this street, drawn from the latest EPC and Land Registry data.

On co₂ emissions, 12 Southdown Avenue stands well clear of the street.

Price per m²

£5,355

Street avg £4,861

Above

Floor Area

107 m²

Street avg 118 m²

On par

Habitable Rooms

4 rooms

Street avg 6 rooms

Strongly below

CO₂ Emissions

3.5 t/year

Street avg 5.8 t/year

Strongly above
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

Rail-style transport is unusually close for this postcode.

Crime

1110/mo

Falling year-on-year across the wider district.

Nearest stop

0.2 km

Springfield Road East — bus stop.

Closest school

0.1 km

Downs Junior School. 36 schools nearby.

Nearest schools

  • Downs Junior SchoolPrimary116m
  • Downs Infant SchoolPrimary204m
  • Fairlight Primary SchoolPrimary873m
  • Stanford Junior SchoolPrimary890m

Nearest stops

  • Springfield Road EastBus stop181m
  • London Road (Brighton) Rail StationRailway station194m
  • Rugby Road EastBus stop206m
  • Rugby Road EastBus stop219m

Most reported crime locally

  • Violence & Sexual Offences4,189 reports27%
  • Shoplifting2,866 reports18%
  • Anti-social Behaviour2,547 reports16%
  • Public Order1,432 reports9%

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 6EG from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for BN1 6EG

Daytime· 07:00 – 23:00

52.0dB

Low
Night-time road noise heatmap for BN1 6EG

Night-time· 23:00 – 07:00

41.5dB

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

Get a survey for this property

Level 3 Building Survey

Victorian-eraMid-Terrace HouseEPC DPre-1919 buildExtended multiple times (2+ extensions)Solid (non-cavity) walls

Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.

From £1,220 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£733k

1 Bates Road

BN1 6PF

3 bed3 bath
£520k

1 Cumberland Lodge, Cumberland Road

BN1 6ST

3 bed2 bath
£506k

1 Cleveland Road

BN1 6FF

3 bed1 bath
£748k

1 Fircroft Close

BN1 6RY

4 bed
£883k

1 Chester Terrace

BN1 6GB

4 bed2 bath
£946k

1 Fairlie Gardens

BN1 6PY

4 bed2 bath
£1.2m

1 Friar Road

BN1 6NG

4 bed2 bath
£1.3m

1 Elms Lea Avenue

BN1 6UG

4 bed1 bath

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 12 Southdown Avenue is modelled from its 107 m² EPC floor area, its 3 recorded sales and recent sales of comparable homes in BN1 6EG. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 3 sales are recorded for 12 Southdown Avenue. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 12 Southdown Avenue was lodged in February 2026 at band D and is valid until February 2036. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. 2 applications are matched to 12 Southdown Avenue. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 14 months, which places each incident at an approximate point. The 36 schools and 30 stops listed are measured in a straight line from BN1 6EG, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
12 Southdown Avenue is in council tax band D. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 12 Southdown Avenue, Brighton, BN1 6EG. Each answer is also embedded as structured data for search engines.

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