BEIJING -- China's housing market remained stable overall in July, with home prices in 70 major cities registering slower month-on-month growth, official data showed Friday.

New home prices in four first-tier cities -- Beijing, Shanghai, Guangzhou and Shenzhen -- rose 0.5 percent month-on-month in July. The growth rate was 0.1 percentage point lower than the previous month, according to data from the National Bureau of Statistics (NBS).

Thirty-one second-tier cities saw a month-on-month increase of 0.5 percent in new home prices, compared with a 0.9-percent rise in June, while 35 third-tier cities witnessed a month-on-month growth of 0.8 percent in new home prices, unchanged from the previous month.

Prices of resold housing in first-tier cities edged up month-on-month, though at a slower pace. Second-tier and third-tier cities both posted a 0.5-percent month-on-month increase in resold housing, remaining the same from the previous month.

In July, local governments maintained the principle that "housing is for living in, not for speculation," and hence did not use the property market as a form of short-term stimulus to prop up the economy, said Kong Peng, a senior NBS statistician.

As local authorities intensified efforts to stabilize property prices and expectations, the country's housing market has been generally stable, Kong said.

China's investment in property development rose 3.4 percent year-on-year during the first seven months, compared with a 1.9-percent increase registered in the first half, the NBS data showed.