(Adds details about bad loans, interest income)
BEIJING, April 27 (Reuters) - China Construction Bank Corp (CCB) , the country's second-biggest lender by assets, on Thursday reported 3 percent profit growth for the first quarter.
CCB, the first of China's big four state-owned lenders to report first-quarter earnings, saw its profit reached 70 billion yuan ($10.15 billion) in the three months through March, up from 67.95 billion yuan a year earlier.
The result was in line with the average estimate of 70.4 billion yuan from analysts polled by Reuters.
CCB's non-performing loan (NPL) ratio was 1.52 percent at the end of March, flat with the end of 2016.
The volume of NPLs increased by 5.8 billion yuan over the three-month period to 184.5 billion yuan by the end of March.
The bank's net interest margin (NIM) - the difference between interest paid and earned - was 2.13 percent at the end of March, down from 2.20 percent at the end of December, resulting in a 0.89 percent year-on-year decline in first-quarter net interest income.
CCB expects its 2017 NIM to narrow only slightly over the course of the year - within 10 basis points compared with the end of the fourth quarter of last year, the bank's chief financial officer said last month. ($1 = 6.8940 Chinese yuan renminbi) (Reporting by Shu Zhang and Matthew Miller; Editing by Randy Fabi and Mark Potter)