The first Condominium Act was enacted on April 21, 1979, and has been in effect for 44 years. Over this period, the act has been amended three times, with the latest amendment occurring in 2008.

Some of the first condominiums registered under the Condominium Act of 1979 include Grand View House in Khlong Toei, Ratchathewi Tower on Phaya Thai Road near Ratchathewi Intersection, and Siam Condominium on Rama 9 Road, among others.

However, prior to this act, there were housing projects by the National Housing Authority, such as the Din Daeng Flats, which were completed in 1974. The establishment of the Din Daeng Flats prompted the push for the Condominium Act to create a system of joint ownership in condominiums, as it was anticipated that there would be an increase in high-rise residential developments similar to those in foreign countries in the future.

As of the end of the first quarter of 2023, there are no fewer than 3,500 condominium projects across the country, with a total of 1,374,173 registered completed units (excluding flats or dormitories), according to statistics from the Ministry of Interior.

In this report, the author has ranked the provinces by the number of registered completed condominium units as follows:

  1. Bangkok: 782,547 units
  2. Chonburi: 140,436 units
  3. Nonthaburi: 109,829 units
  4. Samut Prakan: 74,109 units
  5. Pathum Thani: 61,715 units
  6. Phuket: 32,161 units
  7. Chiang Mai: 30,228 units
  8. Phetchaburi: 20,571 units
  9. Nakhon Pathom: 19,629 units
  10. Prachuap Khiri Khan: 17,756 units
  11. Rayong: 16,399 units
  12. Songkhla: 9,864 units
  13. Nakhon Ratchasima: 8,389 units
  14. Khon Kaen: 7,518 units
  15. Ayutthaya: 5,434 units
  16. Samut Sakhon: 4,432 units
  17. Chachoengsao: 4,132 units
  18. Chiang Rai: 2,488 units
  19. Surat Thani: 2,376 units
  20. Phitsanulok: 2,185 units
  21. Saraburi: 2,143 units
  22. Nakhon Sawan: 2,106 units

Provinces with more than 1,000 but fewer than 2,000 registered completed condominium units as of the end of the first quarter of 2023 include Ubon Ratchathani, Krabi, Maha Sarakham, and Samut Songkhram.

If we consider only the four provinces where residents can travel via rail mass transit—Bangkok, Nonthaburi, Samut Prakan, and Pathum Thani—we find that there are a total of 1,028,200 registered completed condominium units, accounting for approximately 75% of the total registered completed condominium units nationwide.

Including Chonburi (which lacks rail mass transit), the top five provinces have a total of 1,168,636 registered completed condominium units, representing about 85% of the total registered completed condominium units in the country.

Bangkok alone has approximately 57% of the total registered completed condominium units nationwide. It is important to note that this figure does not include units in projects that are still under construction or projects that have been launched but have not yet begun construction.

Since 2010, there has been a significant increase in condominium projects, expanding into regional provinces and secondary cities. If we estimate that in a normal year (without economic crises or pandemics), around 50,000 new registered completed condominium units are added nationwide, we can anticipate that we may reach a total of 2,000,000 condominium units across the country in approximately 12 years.

Samma Keetsin
Director and Independent Director, Sena Development Public Company Limited