SL1 1GZ

SL1 1GZHouse Prices / South East, Slough, William Street

Last updated May 2026

Key Postcode Insights

SL1 1GZ is a residential postcode situated on William Street, Slough, SL1 with 64 addresses.

It ranks as the 1385th largest and 116th most expensive of the 1,426 postcodes in the SL1 area. The dominant property type is a modern flat built after 1980.

The postcode contains a total of 64 properties: 64 flats.

64
Properties
  • Flats

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House Pricesin SL1 1GZ

Sale prices range from £177,987 for 1 bedroom leasehold flats (387 ft2) to £235,843 for 2 bedroom leasehold flats (667 ft2) .

Monthly rental prices range from £1,009 pcm for 1 bed flats to £1,316 pcm for 2 bed flats.

The gross rental yield is between 6.7% and 6.9%.

The average value per square foot is £425.

Average Sale Value
£207,713
Average Rental Value
£1,174 pcm
Average Rental Yield
6.8% /year
Average Value Per Sqft
£425 /ft2
Prices last updated 1st May 2026
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Explore Buildingsin SL1 1GZ, William Street, Slough, SL1

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Sales History
in SL1 1GZ

The last sale was on 26th March 2024 for £187,500 and since then the market in the area has decreased by 0.6%. The postcode has had a total of 65 sales since 1995.

SL1 1GZ has seen 14 sales in the last three years and no sales in the last twelve months.

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Nearby Postcodesto SL1 1GZ

SL1 1GZ is the 1385th largest and the 116th most expensive postcode out of the 1,426 postcodes in the SL1 area.

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Property Typesin SL1 1GZ

  • 64 modern flats built after 1980
  • modern flat (64)
Energy Efficiency

Energy Efficiencyof properties in SL1 1GZ

  • Energy Performance Certificate (EPC) surveys conducted for 64 properties.
  • The dominant rating is B.
  • A (0)
  • E (0)
  • B (59)
  • F (0)
  • C (5)
  • G (0)
  • D (0)
  • No EPC (0)
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Schools Nearby

Schools Nearbyto SL1 1GZ

The nearest primary school to SL1 1GZ is St Mary's Church of England Primary School which is 865 metres away.
  • 865
    m
    St Mary's Church of England Primary School
  • 1.0
    km
    James Elliman Academy
  • 1.2
    km
    Iqra Slough Islamic Primary School
The nearest secondary school is Slough and Eton Church of England Business and Enterprise College which is 816 metres away.
  • 816
    m
    Slough and Eton Church of England Business and Enterprise College
  • 1.2
    km
    St Joseph's Catholic High School
  • 1.3
    km
    Lynch Hill Enterprise Academy
More reading links
Source: Ofsted 2026
Public Transport Nearby

Public Transport Nearbyto SL1 1GZ

The closest station to SL1 1GZ is Slough station which is 400 metres away.

  • 357
    m
    Slough
  • 2.8
    km
    Windsor & Eton Riverside
  • 3.1
    km
    Windsor & Eton Central
  • 3.2
    km
    Datchet
Source: TFL & National Rail