CHENGDU/BEIJING — China’s provincial capitals have discovered a way to keep apartment sales booming by making it much easier for graduates to get coveted household registration permits.

Authorities in the cities say the main aim is to lure talent to make their labor pools more attractive to companies. But the policies are undermining the authorities’ efforts to control property speculation and are artificially propping up prices, critics in the real estate and securities industries say.

The permits, known as hukou, have been used to control internal migration in China for many years. Without a permit, a resident of a city may not be able to get a whole slew of public services, including education and health care, and would sometimes have to live on the margins of society.

Now, cities such as Chengdu — the capital of Sichuan province in southwest China — are reversing the process by handing out hukou to college-degree holders. In Chengdu’s case that is anyone under the age of 45.

Not only that. They are in some cases providing these graduates with cash incentives if they buy an apartment.

For example, any post doctoral degree-holder who takes up hukou in central China’s Zhengzhou, capital of Henan province, will be handed 100,000 yuan ($15,617) for a first home purchase. For college-degree holders the incentive is 20,000 yuan.

As a result, hundreds of thousands of people have been able to buy properties that were otherwise off limits for them.

Take 27-year-old graduate Peter Li, who faced barriers to buying in Chengdu last year because he was from the northwestern province of Gansu.

Then in July the new policy was introduced, and he bought a three-bedroom apartment in the upscale high-tech zone of the city.

“Getting a hukou through the talent policy was a more convenient way to get around the housing curbs,” said Mr. Li, who moved to Chengdu, which has 17 million people, to work as a product manager in 2016.

By mid January — just over five months after the change — more than 120,000 people had been able to get a Chengdu hukou through the new policy, said Chengdu’s official Talent Work Leadership office.

And Chengdu’s resale market soared. The number of sales registered with the housing bureau, which could lag real-time transactions by up to two months, have climbed to 8,798 in December, up 40% from July’s 6,252, data from Chengdu property net showed. The local real estate portal says it tracks data published daily by the Chengdu housing bureau.

Average prices in some prime locations had risen to about 16,000 yuan ($2,498) per square meter in December, up about 30% from their levels in July, according to data from property realtors, including Fang.com.

At least 10 other provincial capitals, including Wuhan and Changsha in the central provinces of Hubei and Hunan respectively have also loosened their hukou rules, and some have offered incentives.

In such cities the changes have effectively weakened existing curbs brought in over the past year to tame speculation. That has prevented price falls and in some cases helped to trigger significant price increases, according to property agents and analysts.

“It’s a disguised way for the government to relax the curbs,” said a Chengdu-based agent at Lianjia, a large Chinese real estate agency, declining to be named as she was not authorized to speak to the media.

Traditionally, China’s four top-tier cities, Beijing, Shanghai, Guangzhou and Shenzhen, have been the most sought-after destinations for young and educated migrants seeking higher pay and better opportunities.

By contrast, less developed tier-2 provincial capitals have mainly been a magnet for people from smaller cities within the province.

While hefty living costs, soaring property prices and pollution have seen some reverse in flow from top-tier cities to provincial capitals, the wages gap is a big turn off.

Six property agencies in Chengdu surveyed by Reuters estimated between 50% and 70% of their sales have been made off newly minted Chengdu hukou holders in recent months.

The impact is gradually being felt at the national level. Official data on Thursday showed China’s new home prices accelerated to a five-month high in December, with property prices in tier-2 cities recording the strongest price growth.

The Chengdu government, in a faxed response to Reuters’ questions, said it did not set the bar excessively low for outsiders, stressing the importance of attracting talent as the city aspires to mirror the success of China’s top-tier cities.

The city will “continue to satisfy the needs of first-time home buyers and their rigid demand, and those who want to improve their housing conditions, while cracking down on speculation,” the government said.

Home buyers are still subject to existing tightening measures such as having to hold on to their properties for at least three years before selling.

China’s State Council Information Office (SCIO), which doubles as the Communist Party’s communications arm, said the moves undertaken by the tier-2 cities would only increase the size of qualified home buyers “by a small scale.”

Such demand — seen as the opposite of speculative forces — is in line with the view from China’s top leaders that “homes are meant for living, not for speculation,” it said.

Still, there is concern that the strategy will end up being counterproductive by fueling price rises, which in turn could make apartments too expensive for many people born and bred in these cities, building resentment against the city’s government and the newcomers allowed hukou.

There is also skepticism that this is really about attracting higher educated people to these cities. Instead, critics suggest it is largely about raising local government revenues through land sales.

“Having a diploma is not a big thing in China nowadays,” said Iris Pang, a Hong Kong-based economist at ING. A record 8 million students graduated from Chinese universities in 2017 — nearly 10 times the number in 1997.

Ms. Pang says without a proper set of criteria, such as a salary floor, the policy will fuel property price rises.

“It shows that local governments are very desperate to attract demand. It could mean that there is a fear of oversupply in those lower-tier cities,” Ms. Pang said. — Reuters