Location: London

Penthouse, Cambridge House, One Tower Bridge £15m

Belgravia's Grosvenor Crescent has been named The Most Expensive Street in England & Wales by Lloyds Bank, with an average house price of £16,918,000. Grosvenor Crescent

How do you go about designing the ultimate specification for a landmark super-prime scheme opposite Harrods? What kind of bells and whistles do UHNWIs expect to see in a £12.5m apartment?

Just a week after the Royal Borough of Kensington & Chelsea claimed victory in an "historic battle" against mega-basements, another London council is eyeing up a subterranean crackdown.

Two of London's most venerable property law firms have decided to team up and create a 120-strong outfit with a combined total of 530 years' experience. May, May & Merrimans (est. 1786) and Hunters (est.

Agents Mutual co-founder Knight Frank has opted to ditch Zoopla and go with Rightmove under OnTheMarket's "two portal rule".

George Osborne's overhaul of the Stamp Duty system, creating a progressive regime that delivers savings to all but the top 2% of home buyers, "has the potential to trigger a material shift in market sentiment…

Minister of State for Housing and Planning Brandon Lewis has been busy updating Parliament on the coalition government's attempts at freeing up the planning system.

Mayor Boris has approved plans for a mega-development on the eastern edge of Canary Wharf, which should create some 3,610 new homes.

Residential development lenders are "embracing more risk," says Knight Frank, as competition for high returns heats up.

The best new residential extensions and improvements are being celebrated by New London Architecture at an exhibition and awards thing at The Building Centre in WC1.

London's rental prices are likely to rise by 10% next year, thinks Marsh & Parsons, driven by strong tenant demand and a flourishing corporate sector.