In others, short-term rent concessions have been granted and higher payments phase in later.

He said that in virtually every case he had studied, he had found that tenants had been offered some rent concession.

He said 12 other renters had rent concessions of one months to two months.

On the Offensive Mr. Giuliani could simply have said he would examine the matter when the first newspaper account of the rent concessions broke.

The bank offered rent concessions.

And he dismissed Miss Lortel's rent concessions as "far from unusual."

Less office space coming on line could eventually lead to fewer rent concessions to attract tenants, consultants say.

Those corporations entered into 48 leases with new tenants that had rent concessions.

The investigators could also determine that some portion of the rent concessions should have been reported as contributions to Mr. Giuliani's campaign.

Mr. Giuliani has maintained that the officials who received rent concessions were paying market-value rents and that they had received no special favors for their apartments.