Before they could tuck in, Ronson, 71, spoke in his  matter-of-fact, glass half full manner. The man behind Heron Tower, the  soon-to-be-completed luxury City skyscraper adorned with a vast  aquarium containing 67 species of fish, spelt out the problems facing  the sector. 
"The banking sector has not been able to provide  the oil necessary to get the development wheels working again," he  warned on Tuesday. "Banks still have a lot of unfinished business of  their own and the big question is what happens to the parcels of toxic  waste they have tucked away. The banks, especially the Irish ones, will  be sitting on some big losses."
The property  industry is facing a cataclysmic problem. If it can't borrow, developers  can't build or trade property. Even though the sector praised last  month's Budget – with its reintroduction of enterprise zones et al –  this will all come to nought if property companies cannot get the money  they need to do their job. 
As Ronson succinctly  put it, the problem was caused by the free and easy lending of the last  boom. There is no new lending because many banks – some of the Irish  banks, Bank of Scotland and Royal Bank of Scotland among them – lent on  inapproprivate deals and schemes that are now worthless, and the debt is  still on their balance sheets.
More than £52bn  of property debt will need to be refinanced this year, with another  £121bn next year. And this at a time when banks are being pressured by  authorities into putting more capital on their balance sheets, meaning  even less money is available for property loans. 
Real-estate  adviser Savills published its annual list of the top lenders last week,  highlighting the way the market has shrunk. In particular it noted the  dwindling number of traditional lenders, such as the German banks –  except Deutsche Hypo, one of the few still active. 
Ronson  told his audience that, with the banks closed, they must seek  alternatives to debt. "The opportunity here is for more imagination to  be used to find solutions to help them unwind their positions."
The  largest listed property companies, British Land and Land Securities,  teamed up with wealthy partners to fund their City skyscrapers – the  Cheese Grater and the Walkie Talkie – in the past 12 months. While  listed developer Capital & Counties is searching for a partner with  housebuilding or construction expertise, which also has the cash to help  build its 77-acre Earl's Court scheme in west London. 
 
British Land's chief executive, Chris Grigg, said: "The opportunity to borrow from banks against development has fallen and I don't see this changing. Development will now have to be financed by equity – finding wealthy partners."
BalasHapus