AREA REPORT · CHILTERN SL9

SL9.

Chiltern

SL9 is an outcode in Chiltern, covering the neighbourhoods of Gerrards Cross, Chalfont Common & St Peter East, Chalfont St Peter West, Denham and Chalfont St Giles, Seer Green & Jordans. Over the last 12 months 190 properties changed hands — a median of £424k for flats (£5,821/sqm) and £923k for houses (£6,000/sqm). Housing stock peaks at EPC band D.

Recorded dwellings
6,579
residential addresses we hold records for
Across
4
sectors — see breakdown below
Sales
12 month
3 year
Flats
34
177
Houses
156
597
Recorded transactions across the area.
Median sale price
12 month
3 year
Flats
£424k
n = 34
£478k
n = 177
Houses
£923k
n = 156
£925k
n = 597
Median sale price across the window.
Median £/sqm
12 month
3 year
Flats
£5,821
n = 34
£6,077
n = 167
Houses
£6,000
n = 151
£6,107
n = 555
Typical price per square metre, where floor area is available.
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PRICE MATRIX
Sales by window, type, and floor area.
Headline price
Mean
Houses
Correcting
−11.2% vs 12m
−11.5% vs 3y
£600k£1.20m£925k£923k£819k3Yn=59712Mn=1566Mn=34
Flats
·Stabilising
+3.9% vs 12m
−7.9% vs 3y
£310k£620k£478k£424k£440k3Yn=17712Mn=346Mn=15
Bar height = median sale price. Tick = mean. Trend word reads the joint state of the 6m-vs-12m and 6m-vs-3y tiers.
Size-normalised — £ per sqm
Mean
Houses
·Stabilising
−0.4% vs 12m
−2.1% vs 3y
£0£3,350£6,700£6,107£6,000£5,9783Yn=55512Mn=1516Mn=34
Flats
·Stabilising
+0.0% vs 12m
−4.2% vs 3y
£0£3,300£6,600£6,077£5,821£5,8233Yn=16712Mn=346Mn=15
From EPC-matched floor area. Hatched bars mark windows where fewer than 60% of sales matched a certificate.
Show numbers
Houses · 6m
Avg £
£928k
n=34
Median £
£819k
n=34
Avg £/sqm
£6,075
n=34
Median £/sqm
£5,978
n=34
Houses · 12m
Avg £
£1.09m
n=156
Median £
£923k
n=156
Avg £/sqm
£6,281
n=151
Median £/sqm
£6,000
n=151
Houses · 3y
Avg £
£1.10m
n=597
Median £
£925k
n=597
Avg £/sqm
£6,377
n=555
Median £/sqm
£6,107
n=555
Flats · 6m
Avg £
£509k
n=15
Median £
£440k
n=15
Avg £/sqm
£6,022
n=15
Median £/sqm
£5,823
n=15
Flats · 12m
Avg £
£493k
n=34
Median £
£424k
n=34
Avg £/sqm
£6,012
n=34
Median £/sqm
£5,821
n=34
Flats · 3y
Avg £
£586k
n=177
Median £
£478k
n=177
Avg £/sqm
£6,285
n=167
Median £/sqm
£6,077
n=167
PRICE + VOLUME · 25Y
Medians and monthly sales, 2001–present.
£152k£608k£1.1m20052010201520202025Median house · 12m smoothedMedian flat · 12m smoothedSales volume (monthly)
EPC · 25Y
Certificates issued, by band.
Median EPC score
68
Median potential
80
03216412010201520202025
A
B
C
D
E
F
G
COUNCIL TAX
Band distribution.
Column width shows the number of properties in each council tax band. Colour shows the composition within that band.
Flats/maisonettes
Other/unknown
Band A
137
Flats/maisonettes
Band B
145
Flats/maisonettes
Band C
611
Flats/maisonettes
Terraced
Semi-detached
Band D
1,693
Flats/maisonettes
Terraced
Semi-detached
Band E
1,656
Semi-detached
Detached
Bungalows
Band F
1,859
Detached
Band G
4,818
Detached
Band H
1,333
Band I
0
Flats/maisonettes
Terraced houses
Semi-detached houses
Detached houses
Bungalows
Other/unknown
Property type totals
Flats/maisonettes
2,613
21%
Terraced houses
1,176
9.6%
Semi-detached houses
1,511
12%
Detached houses
6,020
49%
Bungalows
797
6.5%
Other/unknown
181
1.5%
AMENITIES
Transport access and schools.
Counts of public transport stop points and schools inside the outcode (or within ~100m of the boundary). Drill into a sector for the full stop-by-stop list.
Rail stations
1
Metro & tram
0
Bus & coach
0
Bus stops
100
Schools
10
SECTORS
Drill down to sector.
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COVERAGE
Neighbourhoods and wards.
Neighbourhoods (MSOA)
7 · click column to sort
Gerrards Cross
3,965
4,292
Chalfont Common & St Peter East
2,985
3,840
Chalfont St Peter West
2,210
2,767
Farnham & Hedgerley
54
26
Mill End, Heronsgate & Maple Cross
4
11
Chalfont St Giles, Seer Green & Jordans
13
6
Denham
10
4
Wards
5 · click column to sort
Chalfont St Peter
4,724
6,051
Gerrards Cross & Denham
4,446
4,852
Farnhams & Stoke Poges
54
26
Chorleywood South & Maple Cross
4
11
Chalfont St Giles & Little Chalfont
13
6
NEARBY OUTCODES
Nearby outcodes.
FAQ

SL9 property data — common questions

What is the average house price in Chiltern (SL9)?
Over the last 12 months the median house sale price in SL9 (Chiltern) was £923k, with an average of £1.09m, from 156 recorded sales (HM Land Registry).
How much do flats cost in SL9?
The median flat sale price in SL9 over the last 12 months was £424k (about £5,821 per square metre), from 34 recorded sales.
What is the price per square metre in SL9?
Typical sale prices per square metre in SL9 are £6,000 for houses and £5,821 for flats, where floor area is recorded on the energy certificate.
What EPC rating do homes in SL9 have?
Homes in SL9 most commonly hold EPC band D, with a median current energy-efficiency score of 68 (a potential of 80 after improvements).
How many properties sold in SL9 in the last year?
190 properties were sold in SL9 over the last 12 months, and 774 over the last three years (HM Land Registry Price Paid data).
REFRESHED 11 JUN 2026 ·DATA & SOURCES