No bars, no signal predictedOne bar, reliable signal unlikelyTwo bars, may experience problems with connectivityThree bars, likely to have good coverage and receive a data rate to support basic web servicesFull bars, likely to have good coverage indoors and to receive an enhanced data rate to support multimedia services
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£8,750,000
Added > 14 days

8 bedroom detached house for sale

21 The Bishops Ave
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Detached house
8 bed
7 bath
EPC rating: C*

Key information

Tenure: Freehold
Council tax: Band TBC
Broadband: Super-fast 75Mbps *
Mobile signal: 
EE O2 Three Vodafone
Water: Ask agent
Heating: Ask agent
Electricity: Ask agent
Sewerage: Ask agent
Discover more information

Property description & features

  • Tenure: Freehold
  • Gym
  • Staff Quarters
  • Development Opportunity
  • Planning Permission
  • Underground Parking
  • Heated swimming pool and sauna
  • Cinema Room


A rare development opportunity on the prestigious Bishops Avenue. Owned since 1971, Avenue House is now poised for a transformative journey with approved planning permission to replace the existing residence with a grand mansion of approximately 15,000 square feet. Notably, this permission comes with the flexibility of no deadline to commence construction. This represents an extraordinary chance to own a piece of one of London's most prestigious locations, set on a 1/3 acre plot along The Bishops Avenue—also known as 'Billionaire’s Row'. This avenue is renowned for its grandiose homes and proximity to Central London, marking it as a highly sought-after address.



Development Insights


Professional builders estimate the construction of this super mansion on the plot at about £300 per square foot. With planning permission for nearly 15,000 square feet of space, the potential for this property is immense. Our projections suggest that once constructed, the mansion could be valued at a minimum of £1300 per square foot, underscoring the significant investment opportunity at hand.



Executive Summary


• The Bishops Avenue Hampstead, London, United Kingdom


• Widely recognised as the ‘Billionaire's Row'


• One of the most desirable addresses in prime London and celebrated throughout the world for its grand houses and its past & present, infamous & celebrity owners


• New Build Super Mansion Circa 15,000 sq. ft by Messers Charlton Brown Architects has been designed for the location


• 1/3rd Acre Plot


• Planning Consent GRANTED


• ‘Technical Start’ has been recognised by Barnet London Borough Council meaning the normal time limit, to commence construction, is now lifted


• The New building creates: 8 Bedrooms, 7 Bathrooms, 5 Receptions, an Indoor Swimming Pool, a Gym, a Cinema, a Sauna, Staff accommodation, and Underground parking


• A ‘Buyer Information Pack’ can be made available for this property. Please request more information before submitting any offer.


• Should any offer be successful on this property the offer will be subject to a 'Reservation Agreement' with the seller.


Places of interest

    Nest Seekers International is a global real estate brokerage at the nexus of technology and media. Founded in 2002 by industry visionary and current president and CEO, Eddie Shapiro, Nest Seekers evolved at the forefront of the digital media revolution, reaching a new generation of clients and gaining international exposure through groundbreaking media partnerships, revolutionizing the industry and fuelling Nest Seekers’ rapid growth. Over the past two decades, Nest Seekers has continuously expanded and has become a household name across multiple key metropolitan and luxury destinations. Today, with well over $100B in transactions and representations globally, Nest Seekers has 50 offices and 2,000 agents and employees across North America, the United Kingdom, Canada, the EU, Southeast Asia and the UAE. Since 2017, Nest Seekers has been at the forefront of the UK real estate market, representing buyers, sellers, landlords, and tenants. We offer a powerful brand, cutting-edge technology, and an international platform to list your home to a global network.

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    *DISCLAIMER

    Property reference NEST_RM_55094_3501691. The information displayed about this property comprises a property advertisement. OnTheMarket.com makes no warranty as to the accuracy or completeness of the advertisement or any linked or associated information, and OnTheMarket.com has no control over the content provided by the agent or developer. This property advertisement does not constitute property particulars. The information is provided and maintained by Nest Seekers International - London.

    OnTheMarket may have applied supplementary data to this property listing, including:

    Broadband availability and predicted speed: obtained from Ofcom on April 6, 2022

    Broadband speed is measured in megabits per second, with the number returned showing how fast the connection is. Each reading is based on the highest predicted speed of any major broadband network for services that deliver the download speeds. The following are the different readings that we may display:

    Basic: Up to 30 Mbit/s
    Super-fast: Between 30 Mbit/s and 300 Mbit/s
    Ultra-fast: Over 300 Mbit/s

    The data is updated three times a year. The checker results are predictions and should not be regarded as guaranteed. For more information, see: https://checker.ofcom.org.uk/en-gb/about-checker#Answer_0_2

    Mobile phone signal availability and predicted strength: obtained from Ofcom on April 6, 2022

    Mobile signal predictions are provided by the four UK mobile network operators: EE, O2, Three and Vodafone. Predictions can vary significantly from the coverage you may actually experience as a result of local factors (especially terrain). Ofcom has tested the actual coverage provided in various locations around the UK to help ensure that these predictions are reasonable. The values shown against a property can be broken down as follows:

    Clear: No bars, no signal predicted
    Red: One bar, reliable signal unlikely
    Amber: Two bars, may experience problems with connectivity
    Green: Three bars, likely to have good coverage and receive a data rate to support basic web services
    Enhanced: Full bars, likely to have good coverage indoors and to receive an enhanced data rate to support multimedia services

    Energy Performance data and Internal floor area: obtained on March 18, 2014 from The Energy Performance of Buildings (Certificates and Inspections) (England and Wales) Regulations 2007 or the Home Report if in relation to a residential property in Scotland.

    Any supplementary data should not be relied upon as forming part of any property particulars and OnTheMarket cannot be held responsible for any incorrectness in this data. See here for more information.

    *Call rate information

    Calls to 0843 numbers will be charged at 4p/min from BT landlines. Calls from other networks may vary, and calls from mobiles and outside the UK will be higher. Calls to local numbers beginning with 01, 02 and 03 numbers will incur standard geographic charges from landlines and mobiles.