Is there a specified size for the size of the bedroom, living room, kitchen, bathroom, garage, etc.

No, but there are regulations on the form of construction.

The Ministry of Land and Resources' definition of villas: refers to single-family detached courtyards, two- to three-story forms; The floor area is quite large, and the floor area ratio is very low.

The villa is a detached house form of up to three floors, including the basement floor, with an indoor garage. Like many sub-villas and villas, such as: "four-story detached bungalows", "townhouses", "double-detached townhouses", and "superimposed townhouses" are all high-end residences, also called townhouses, western-style houses, not villas.

The floor area ratio refers to the ratio of the total building area to the building land area. For example, on a land of 10,000 square meters, there is a total building area of 4,000 square meters, and its plot ratio is:

The general standard concept of low-density residential buildings is planned, and the floor area ratio of high-rise low-density residential buildings is not greater than; The floor area ratio of multi-storey low-density residential buildings is not greater than; The plot ratio of a town house is not greater than; The plot ratio of the villa is not greater than.

On May 31, 2006, the Ministry of Land and Resources issued a notice stating that "China will stop the supply of land for villa real estate projects and go through the relevant land use procedures, and carry out a comprehensive clean-up of villas." At the same time, it is clear that low-density residences such as townhouses, duplexes and town houses are not included in the scope of villas, but are classified as high-end residences. With the scarcity of land resources, the government's control of market supply will inevitably lead to a high price increase in single-family homes for sale.

Since the introduction of the policy of stopping the approval of villa land, the scarcity of land resources has become the biggest selling point of villas. Villas, which have the dual characteristics of urban living convenience and low-density residential forms, are becoming more and more out of print. The non-renewable nature of land resources determines that villa products can maintain and increase their value more than other residential products.

Especially for golf villa products, under the national policy of "double ban on villas and golf land", golf villa resources are more seriously scarce, making them more likely to appreciate significantly. In the United States, Australia, Southeast Asia and other regions, the average appreciation of golf villas is 6 times that of other villa projects.

At present, there are no new villas or villas under construction in various cities in China, and the land that has not been developed before can no longer be developed villa projects, and can only develop high-end residences such as townhouses and western-style houses. So, just get the definition of a villa clear.

There are no rules in your own design.

Normally, there are requirements for garages, and I don't know much about the rest, so there shouldn't be.

Yes, the proportions are regulated, it depends on how big you want it to be, or you want to build it yourself.