New office supply in Tianjin, one of the major commercial cities in northern China, probably will peak this year, further depressing the market and pushing up vacancy rates, according to FPDSavills.
The property consultant expected new supply this year to amount to 209,000 square metres.
A further 237,000 sq metres could come next year if all projects were completed on schedule.
But the firm said work on some projects set for completion next year - including Beiyang Building, Kimming Plaza, Xin Chun Building and Dong Di Li Plaza - had stopped.
Tianjin's previous supply peak was in 1998, with completed new office space exceeding 135,000 sq metres.
Vacancy rates should increase this year as new supply came on the market, FPDSavills said. However, this would not affect projects in central locations.