Are you living under your most valuable asset without realising it? 


Some freeholders don’t realise that they have the ability to sell the rooftop airspace above their homes for extra capital. Being a developer we understand the potential of what selling airspace involves and not only can it be very profitable for the freeholder, it can also create opportunities to build thousands of new homes across the capital.

In a recent study by Knight Frank, it was found that 41,000 new dwellings could be built in central London using rooftop development space, with a potential value of £51 billion, and without altering the iconic skyline.

At London Penthouse, we focus on building bespoke penthouses and bringing luxury penthouse living to a wider market.

What makes a suitable site? We have outlined a few pointers to give you a good idea of whether you can sell your airspace, and if you have the right type of building:

  • You must either be the freeholder or have share of the freehold of a building.
  • Your building should have a flat or an unconverted pitched roof.
  • Lots of Victorian buildings in central London have flat roofs as well as blocks of flats.

Example Drawings of Suitable Sites

Existing                                                                      Proposed

Existing                                                                       Proposed

We are more than happy to come and give freeholders a free valuation and either offer a share of profits on the sale of the new penthouses, or buy the airspace development rights from for an upfront premium.

You can view the process and case studies of developments carried out at

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