During 2009-2018, construction investment has accounted for 8.4% of Thailand’s gross domestic product (GDP) so the sector’s health has important consequences for employment and linkages with related sectors, such as construction materials and real estate.

The sector is split domestically into construction for the public and private sectors, with investment in the two occurring at a ratio of around 57:43.





In 2018, the construction sector had a value of THB 1,264.4 bn, while for the year, growth ran to 4.3% YoY, an improvement on the 0.9% contraction seen in 2017. This turn around was due to greater progress on new projects, while those that were ongoing were pushed through to completion. In terms of particular market segments, growth in public-sector construction (which accounts for 56% of the total value of Thai construction) was at a lower level than that of the private sector, which has seen its value grow at a faster pace over the last four years as work on projects for residential accommodation have sped up (residential accommodation represents 56% of the value of private-sector construction). In addition, 2018 was also the first year in which the two halves of the market worked together on large-scale public-private partnerships (PPPs). Under these arrangements, the private sector is responsible for financing construction work, as is the case for the MRT Pink Line (Min Buri-Bang Khae) and Yellow Line (Lat Phrao-Samrong). Details of the recent development of public and private sector construction are given below.








Krungsri Research forecasts that total growth in the construction sector will run to 3.5-5.0%, 5-7% and 7.5-9.5% YoY in each of the years 2019, 2020 and 2021 (Figure 11) on a combination of increased spending on large-scale projects by the government and rising investor confidence among real estate developers.

In 2019, government spending on construction is forecast to grow by 3-5%. These weak rates of growth are explained by the fact that through the second half of the year, it will likely remain unclear what the new government’s policy will be towards current and future construction projects. However, in 2020 and 2021, the expectation is that growth rates will accelerate to 5-7% and then to 8-10% on better progress on a number of new large-scale infrastructure projects, especially on: (i) projects within the Bangkok Metropolitan Region, such as the MRT Purple Line (Tao Pun-Rat Burana); (ii) projects in the EEC, including the high-speed rail link between the region’s three airports, the development of U-Tapao airport, and phase 3 of the upgrade of Laem Chabang Port; and (iii) projects in major provinces (including Chiang Mai, Khon Kaen, Nakhon Ratchasima, Phuket and Phitsanulok) including the development of light railway systems and airport expansions. In addition, there are also plans for a greater number of medium- and small-sized projects, for which allocations are made in the annual budget. These are mostly for expansions and upgrades to the national road network, which will be carried out under the management of the Department of Highways and the Department of Rural Roads.
Over the next 3 years, a large number of government construction projects that have received cabinet approval and that are at a stage where progress can move forward will now do so, with investments being made in construction, operations and repairs. Those projects that can be expected to be first in line will include those for which (i) a contractor is being chosen, (ii) competitive bidding is being prepared, or (iii) the cabinet has given its approval and that have according to the assessment of the Environment Board passed their environmental and health impact assessments.
In the coming period, it is expected that a greater number of PPP projects will be undertaken, with these taking the form of both government- and private sector-funded construction. Determining exactly what type of PPP agreement is signed depends on stated government policy and negotiations over the anticipated income from forecast passenger numbers but it is likely that most PPP projects will take the form of PPP Net Cost (rather than PPP Gross Cost) agreements because these grant the private sector the right to collect income and help the government to reduce the project’s operating costs.


The forecast for private sector construction is for growth of 4-5% in 2019, a slight fall relative to 2018 (Figure 11). This slowing of activity is in line with a softening of the economy, the decision by operators to await further progress on government-backed infrastructure before moving forward with investments, the tightening of conditions on issuing house loans set by lenders, and changes to the law governing mortgages that came into effect in April 2019 and that will likely have the consequence of limiting growth in the housing market. However, the market is expected to expand by 5-7% and 7-9% in 2020 and 2021, with higher rates of growth being supported by several factors. (i) Greater progress with upgrades to communications networks will tend to pull in private sector investment through the crowding-in effect, for example in the case of residential accommodation that is being built as mass transit systems expand (e.g. in Ratchada-Lat Phrao, Phaholyothin and Ramkhamhaeng). (ii) Progress on the EEC development is helping to support a raised level of construction of commercial buildings, industrial estates and hotels. (iii) The private sector is increasing its investments in new types of developments, especially in mixed-use projects (such as One Bangkok and The Grand Rama 9), which are expected to see ongoing growth in the coming years (Figure 13 and Table 7).


Turnover for construction companies in the next 3 years is expected to grow further, in particular for those which concentrate on government’s projects as they should see a growing backlog of work. In 2019, income from these operators is expected to increase only slightly as large-scale projects are awaiting for the establishment of the new government in the second half of year; but it is expected to show accelerative growth during 2020-2021 due to concurrent construction in several large and small projects. For operators focusing on the private sector, in 2019, turnover is likely to decline owing to an economic slowdown, stagnant infrastructure projects, stricter regulations of mortgage loans which may affect new developers’ decision on new projects; and then would grow in line with demand for investment in real estate influenced by the state of the economy and progress with government infrastructure projects.


As regards turnover, large players will have the opportunity to work on more sizeable projects connected to both government-backed infrastructure work and developments undertaken by the private sector, in addition to construction projects overseas, particularly in the CLMV nations where investment in infrastructure is ongoing. However, in 2019, income growth for these operators may be limited by delays in making disbursements for government construction work caused by the election in the first half of the year. Despite this, though, in 2020 and 2021, growth will tend to pick up again as the shape of the new political landscape becomes clearer and, with this, government investment in large projects rebounds. For their part, mid- and small-sized players will benefit from: (i) the possibility of subcontracting for large players that have a significant backlog of projects, although profit margins for this work may be low; and (ii) contracting directly on real estate projects, which are seeing solid rates of growth. However, some SMEs in the construction sector may face financial limitations, which then hinders their ability to carry large stocks of construction materials and also forces them to rely on labor in preference to machinery, which in turn leads to higher operating cost and places a cap on performance growth.
In addition to growing opportunities in the domestic market, over the next 3 years, the markets in the CLMV nations (Cambodia, Laos PDR, Myanmar and Vietnam) will also tend to expand in line with their recent growth; between 2012 and 2017, the value of the construction sector’s contribution to GDP increased sharply in these countries, with the rise being most pronounced in Cambodia, where the construction sector grew by an average of 25% per year, followed by Myanmar (19%), Laos PDR (12%) and Vietnam (10%) (Figure 16). These rapid levels of growth thus presents Thai players with the opportunity to expand their customer base, particularly so given the fact that there is a significant overlap between the areas where Thai players already have expertise and the plans for construction work that the public and private sectors in the CLMV nations have for the next several years. This is summarized in Table 8 (a full analysis can be found at Construction in the CLMV region: Opportunities for Thai contractors).



The principal factors that are likely to have an impact on business costs over the next 3 years are the price of construction materials (60% of total costs) and of labor (a further 20% of costs).

In 2019, income for building contractors working in both the private and public sectors is not expected to grow dramatically as investments will likely only be made in the second half of the year, following the establishment of the new government. However, in 2020 and 2021, income for both these groups should improve.