See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/344592678 FACTORS AFFECTING REAL ESTATE PRICES -EVIDENCE FROM MACROECONOMIC DATA IN VIETNAM 影響房地產價格的因素 -來自越南宏觀經濟 數據的證據 Article in Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University · August 2020 DOI: 10.35741/issn.0258-2724.55.4.65 CITATIONS READS 0 133 15 authors, including: Hùng Thanh Nguyễn Minh Duc University of Economics Ho Chi Minh City Vietnam Academy of Science and Technology 42 PUBLICATIONS 166 CITATIONS 11 PUBLICATIONS 43 CITATIONS SEE PROFILE Vo Hoang Ngoc Thuy Thu Dau Mot University 12 PUBLICATIONS 33 CITATIONS SEE PROFILE All content following this page was uploaded by Hùng Thanh Nguyễn on 11 October 2020. The user has requested enhancement of the downloaded file. SEE PROFILE 西南交通大学学报 第 55 卷 第 4 期 JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY 2020 年 8 月 ISSN: 0258-2724 Vol. 55 No. 4 Aug. 2020 DOI:10.35741/issn.0258-2724.55.4.65 Research article Economics FACTORS AFFECTING REAL ESTATE PRICES – EVIDENCE FROM MACROECONOMIC DATA IN VIETNAM 影響房地產價格的因素 –來自越南宏觀經濟數據的證據 Nguyen Thi Hoang Yen a, Nguyen Thanh Hung b, Le Doan Minh Duc a, *, Vo Hoang Ngoc Thuy a, Ngo Thi My Thuy c a Thu Dau Mot University 6, Tran Van On Street, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Vietnam, [email protected] b Binh Duong University 504, Binh Duong Avenue, Hiep Thanh Ward, Thu Dau Mot City, Binh Duong Province, Vietnam c University of Finance – Marketing 2/4, Tran Xuan Soan Street, Tan Thuan Tay Ward, District 7, Ho Chi Minh City, Vietnam Received: May 11, 2020 ▪ Review: June 14, 2020 ▪ Accepted: July 15, 2020 This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) Abstract The real estate market is important in socio-economic life and is even more important for countries with open, transition, and developing economies like Vietnam. The price of real estate is an important factor in the market and is affected by many macroeconomic factors. Using quarterly data from the first quarter of 2005 to the fourth quarter of 2018, the authors construct realistic test pattern matching purposes, requires analysis and possibility of possible sources of data collected in Vietnam on the relationship between real estate price index and factors of economic growth, inflation, money supply and average long-term lending rate in the market. Experimental results demonstrate that these macroeconomic factors have a significant impact on real estate prices in Vietnam. From here, the article provides macroeconomic policy implications for the State of Vietnam in stabilizing real estate commodity prices in particular and developing the real estate market in general. Keywords: Real Estate, Real Estate Prices, Macro Policies, Vietnam 摘要 房地產市場在社會經濟生活中非常重要,對於像越南這樣的開放,轉型和發展中經濟體的國 家而言,房地產市場尤為重要。房地產價格是市場中的重要因素,並受到許多宏觀經濟因素的影 響。作者使用2005年第一季度至2018年第四季度的季度數據,構建了現實的測試模式匹配目的, 要求分析和確定越南收集的有關房地產價格指數與經濟增長因素之間關係的數據來源 ,通貨膨脹,貨幣供應量和市場中的平均長期貸款利率。實驗結果表明,這些宏觀經濟因素對越 南的房地產價格有重大影響。從這裡開始,本文提供了對越南國家的宏觀經濟政策影響,特別是 Nguyen Thi Hoang Yen et al. / Journal of Southwest Jiaotong University / Vol.55 No.4 Aug. 2020 在穩定房地產商品價格和總體上發展房地產市場方面方面。 关键词: 越南房地產,房地產價格,宏觀政策 I. INTRODUCTION Real estate is central to urban sustainable development and socio-economic policies [1]. The real estate price index not only affects individuals but also plays an important role under the macroeconomic level. The issue of considering which factors affect real estate prices has been interested in the researchers around the world for many years, such as empirical research in the US [2], UK [3], Hong Kong [4], Singapore [5], Malaysia [1], China [6], [7] or comparative situation in Hong Kong Beijing - Shanghai [8], and so on. In Vietnam, the price of real estate goods has been a topic of debate in many programs and seminars of scientific research institutes and real estate associations. Many domestic studies have pointed out inadequacies in the management mechanism of the real estate market and the pricing of this particular commodity [9], [10]. Within Ho Chi Minh City, the study [11] discovered the correlation of macro-financial factors to fluctuations in housing prices. Real estate is a characteristic commodity that commercial values are cyclical [12]. During the period 2000 - 2012, real estate prices in Vietnam experienced two hot growth cycles and then cooled in 2000 - 2006 and 2007 - 2012 respectively [13]. A sharp rise in real estate prices often leads to a period of boom and rapid decline when it falls into the freezing period [14]. Recently, in 2017, business activities on the real estate market became more active, up 4.07% with the highest level since 2011, contributing 0.21 percentage points to the total growth of 6.81% of national GDP. By the second quarter of 2018, real estate had a growth of 4.21%, which is the highest in 6 years [15]. The study of factors affecting real estate prices is a matter of urgency in both theory and practice. The world's researches on this issue are conducted in countries with different characteristics of the macroeconomic situation compared to Vietnam, while the researches in Vietnam are mainly based on the aggregate method. The document aims to discuss the development trend of the domestic real estate market or to measure the factors affecting the data range of a locality. In other words, there has not been a full academic study based on the relevant theory to explore the factors as well as measuring the impact to provide evidence from macroeconomic data in Vietnam. Therefore, the authors identified the research problem as a gap in previous studies and proceeding to set a general objective of studying the factors affecting real estate prices to propose policy implications to stabilize real estate prices based on macroeconomic tools. II. LITERATURE REVIEW Residential Property Price Indices (RPPIs) face many difficulties due to the nature of real estate goods with irregular and heterogeneous transaction frequency in terms of characteristics, location, size, and facilities [16]. This leads to differences in formulations when changing the approach in the calculation. The estimated characteristics approach of RPPIs from the Hedonic model of Eurostat [14] is accepted for common use. The point of view of RPPIs by this method is considered the difference in the price of real estate at the same time at time 0 compared to time t and conduct survey at different times. Furthermore, estimates of RPPIs or Price Index (PI) depend significantly on the reliability of the secondary data source and the characteristics of the real estate market in each country are different [17]. The concept of the basic value of real estate assets is more relevant in theoretical analysis than empirical research [18], [19]. The ABC (Austrian Business Cycle Theory) theory explains changes in real factors and investor sentiment in real estate price movements as a result of the business cycle, originating from the policy mistakes of the Central Bank [20], [21]. When the central bank implemented the monetary easing policy, commercial banks had excess capital for lending to compete with customers through various credit policies and one of which was the reduction of lending rates. This, on the one hand, will encourage investors to borrow more to expand their investment in real estate and carry out higher-risk projects, thereby stimulating rising real estate prices. The rise in real estate prices combined with easy access to cheap capital from banks will stimulate investors to borrow more to continue investing in the real estate market. As a result, a period of excessive credit growth occurred and led to high real estate prices for housing. ABC economists emphasize that, as more resources are allocated to the real estate market, the rest of the resources will be less for other areas of the economy. The inefficient allocation of resources that harm the economy is a problem to be addressed. Another view, when the central government's efforts are aimed at curbing the rise in property prices, preventing bankruptcy. Besides, it can stimulate the economy by overspending policy in the context of budget deficit only make the allocation of resources and Money supply M2 Macro-economic environment Property prices inefficient investment worse. It prolongs the recession process and the adjustment of the economy to a stable state of growth. Moreover, the mistake of the state is not the implementation of the policy “fiscal austerity” or “monetary tightening”, but the weakness of the government (and the central bank) or the indifferent to allow “unsustainable credit boom” to occur in the first place. Therefore, the existence of real estate price fluctuations can be explained by the basic exogenous macroeconomic variables in the market (see Figure 1). Interest rate Credit growth in real estate Supply and demand of real estate Figure 1. The relationship between macroeconomic factors and real estate prices Source: Compiled from the authors Economic growth is a prominent issue in the macroeconomy. Many studies around the world show the impact of GDP growth on real estate prices [5], [7]. When real GDP increases, it will increase people's income and a large part of the accumulated income will be invested in preferred assets, including real estate. Because the process of creating real estate usually lasts long, in the short term, the sensitivity of real estate supply is very low. However, according to macroeconomic theory, if the actual output exceeds potential output, it will increase inflation, promote real estate prices to rise, and conversely, the real estate price increases have an impact again. From here, create a two-way relationship between inflation and real estate prices [5]. Effective tools to promote economic growth and control inflation well in macromanagement policies in general and price stability in the real estate market, in particular, is monetary policy. Money supply growth, and hence real estate credit growth, is the main reason for the rise in real estate prices [4]. Empirical evidence of Xu and Chen [22] in the Chinese market shows that the low-interest rates, combined with faster money supply growth, and loosening lending conditions have helped boost real estate prices, and vice versa. Countries that maintain a free interest rate policy, and the impact of short-term interest rates on real estate prices, tend to be stronger [23]. However, the survey results of [4] in Hong Kong show that real estate prices have a significant influence on interest rates, while there is no evidence of the opposite direction. III. METHODS/ MATERIALS The picture of Vietnam's socio-economic situation in 2019 takes place in the context of the world economic situation continues to grow slowly. Unpredictable fluctuations in the international financial - monetary market, complicated oil prices impact on credit growth, psychology, and market expectations. According to the report of the General Statistics Office of Vietnam (2019), this is a "breakthrough year" to strive to successfully implement the macro plan for the 5 years 2016-2020. Vietnam's economy grew at 6.82% in the first quarter of 2019, lower than the quarter 4/2018 but still much higher than the previous years of the first quarter in the 2013 - 2017 period (See Figure 2, Chart 1). Growth of areas (i) services; (ii) industry and construction; (iii) agriculture, forestry, and fisheries, lower than the same period last year, are still in good growth (See Figure 3, Chart 2). A. Research principles During the study period from quarter 1, 2005 to quarter 4/2018, the growth rate of the consumer price index fluctuated continuously, peaked in quarter 4/2008, and bottomed in quarter 4/2015 (See Figure 4, Chart 3). Inflation tends to rise again in the last quarter of 2019, but compared to the overall analysis period, it remains stable. The price increase occurred due to several increasing criteria in the quarter such as (i) demand for food and foodstuffs, (ii) prices of public transport services, (iii) prices of construction materials; (iv) increase in tourism products, and some essential goods such as fuel, iron, and steel (Vietnam General Statistics Office, 2019). In addition to the causes of CPI increase in 2019, there are several factors that contribute to curbing the CPI: (i) Domestic gasoline and oil prices are affected by fluctuations in fuel prices on the world market; (ii) All levels and sectors actively implemented measures to ensure supply and demand balance, prepare goods sources well, strengthen inspection work, control the market, perform price stabilization management in some localities, manage the exchange rates according to the flexible central exchange rate mechanism (General Statistics Office of Vietnam, 2019). Figure 2. National growth rate Source: CEIC database, ADB Figure 3. Growth of economic sectors Source: General Statistics Office of Vietnam Figure 4. Consumer price index Source: IMF-IFS In general, Vietnam's economy in 2019 achieved a good growth rate, the macroeconomy was stable, inflation was controlled at a low level. The national economy takes place in the context of slowing global economic growth with increasing challenges and risks. B. Research data The real estate market is not like the stock market or other investment asset markets, goods on the market are often not bought and resold often, so the market is of low liquidity. when a house is traded on the market. Therefore, when calculating the real estate price index by period. For example, every quarter, it is a fact that some properties were used to calculate the price index of the previous period but this period there were no transactions. In contrast, many properties in the previous period had no transactions but this period appeared. To overcome this problem, the authors calculated the average price for each category in each segment based on the transaction price of that segment in the reporting period. Then based on the weight of each type to calculate the weighted average price for that segment. The weighted average price is used to calculate the price index and price growth of each segment. Such price index calculation allows us to adjust the type of house structure in each segment when there is a change in real estate structure overtime, on the other hand, the way to handle the price index as above allows to reduce the dependence on any real estate when this property has no repeat transactions. The house price index data from the two sources above, have the same calculation method and can therefore be complementary, so the author averages each period and uses this average price index for the article. The data source for PriIndex (PI) is compiled from two sources (*): (1) Real Estate Market Department under Housing and Real Estate Market Management Department, Institute of Construction Economics - Ministry of Construction; (2) Department of Real Estate Market under Ministry of Construction, with the method applied to calculate real estate prices as follows: Real estate price index (Price Index) = (∑Pit * Qit / ∑Pi0 * Qit) * 100. With: • Qit is the number of transactions of real estate i, in m2 at the study period t • Pit is the 1m2 price of real estate i in the study period t • Pi0 is the price of 1m2 of real estate i at the base period In particular, the price index, first of all, is calculated separately for each segment, then based on the proportion of each segment in the market to determine the weight of each segment and recalculated into a composite price index. The data used in the quantitative model are quarterly data series, starting from the first quarter of 2005 to the fourth quarter of 2018. Data of variables are described in detail in Table 1. Table 1. Description of variables, (%) Variable Source Mean Std. Dev. Min Max Real estate price index, PI The national growth rate of national income, GDPG Consumer price index, CPI The average long-term loan interest rate in the market, R * 1.55 2.33 -2.55 6.75 CEIC database, ADB 6.59 1.28 3.14 9.26 IMF-IFS 8.02 6.37 0.31 27.75 IMF-IFS 10.74 3.28 6.95 20.1 Money supply, M2 CEIC database, ADB 23.8 8.84 11.94 49.11 Source: Calculations from authors Real Estate Price Index 30.00 20.00 10.00 0.00 Price Real Estate Index, % 40.00 50.00 with GDP CPI R M2 2005q1 2010q1 2015q1 2020q1 Quarterly, % Price Real Estate Index, % GDP Growth (y-o-y, %) CPI (y-o-y, %) Lending Rate (%, y) Broad Money Growth (%) From 2005q1 to 2018q4 Source: ADB, IFS Figure 5. Graph of the variability of chains in the Source: Calculations from authors in Stata 14.2 H01 Growth rate of total national income of the whole country (%) GDPt (+) (+) (–) H02 M2 - money supply (VND billion) M2t H03 Consumer price index nationwide (%) CPIt H04 Average long-term loan interest rate in the market (%) Real estate price index (PIt) (–) Rt Source: The authors developed Figure 6. The proposed research model PIt = β0 + β1GDPGt + β2M2t + β3CPIt + β4Rt + Ut where U- Random errors; β- Estimated coefficients. The graph of variation of the chains shows the level of change gradually decreasing from 2015 to 2018 and without trend factors (see Figure 5). C. Research model Approaching ABC foundation theory and inheriting results from previous studies, the author summarizes, proposing research models and hypotheses about the positive (+) or opposite (-) effect of these factors on real estate prices (See Figure 6) as follows: Research model is written in a general way as follows: IV. RESULTS AND DISCUSSION From the research model and the above research data, the study conducted the stop test (Table 2), the results show that the M2 and CPI chains are stopped at the root level I (0); while the variables PI, GDPG, R are stopped at the difference, I (1). Table 2 Augmented Dickey-Fuller (ADF) test ADF Z(t) PIt -1.67 GDPGt -3.19 CPIt -5.37 Rt -3.28 M2t -6.26 PIt -5.24 GDPGt -9.34 Rt -6.86 p(*) 0.76 0.09 0.00 0.07 0.00 0.00 0.00 0.00 Source: Calculations from authors in Stata 14.2 Note: (*) MacKinnon approximate p-value Table 3 Pesaran, Shin, and Smith Bounds test [24] 10% 1% p-value (*) I(0) I(1) I(0) I(1) 3.79 5.11 0.01 0.03 Source: Calculations from authors in Stata 14.2 Note: (*) Kripfganz and Schneider [25] critical values and approximate p-values Test statistics F I(0) 2.34 5% I(1) 3.33 I(0) 2.78 I(1) 3.88 The existence of mixed stop chains I (0) and I (1) is the basis for choosing the ARDL (Autoregressive Distributed Lag) model. The ARDL model is used to model the relationship between (economic) variables in a time series equation. The existence of a long-term or cointegrated relationship can be checked based on the type of error correction. The bound testing procedure can be used to conclude the degree of integration of the series as I (0) or I (1) [24]. An ARDL (p, q) model has the form of equation 1: p q i 1 i 0 yt c0 i yt i i/ xt i ut , p 1, q 0 (1) Here, yt is the Real estate price index, PI. The variables explained xt include the National growth rate of national income, GDPG; Consumer price index, CPI; The average longterm loan interest rate in the market, R; and Money supply, M2. ARDL model can be re-parameterized as ECM (Error - Correction Model) correction as follows: p q i 1 i 0 yt c0 yt 1 xt yi yt i xi/ xt i ut (2) adjustment coefficient measures the level of strong response of the dependent variable to deviations from a balanced relationship over a period. In other words, it shows how quickly recovery to the equilibrium position is. The short term coefficients xi , yi explain short-term fluctuations, not deviations from long-term equilibrium. At a statistically significant 5%, the Bound test according to [24] shows that the cointegration relationship exists between chains. The validity of the Bound test is based on the standard distribution assumptions of residuals, as well as assumptions about homogeneous variance and no autocorrelation. The Cameron & Trivedi test results show that the residuals have standard distribution and homogeneous variance (Table 4); and the Durbin's alternative test (Table 5) also showed that the remainder had no minimum correlation to the fourth-order. Table 4. Cameron & Trivedi's decomposition of IM-test Source chi2 df p Heteroskedasticity 48.06 44 0.3119 Skewness 8.79 8 0.3604 Kurtosis 0.88 1 0.3482 Total 57.73 53 0.3049 Source: Calculations from authors in Stata 14.2 With Speed-of-adjustment coefficient p 1 i i 1 Long-term coefficient q i 0 i The long-term coefficients in equation (2), describes the equilibrium states of the independent variables on the dependent variable. In the presence of co-integration relationships, they correspond to negative co-integration coefficients after standardizing the coefficients of the dependent variable into units. The speed Table 5. Durbin's alternative test for autocorrelation lags(p) 1 2 3 4 F df Prob > F 0.82 (1.42) 0.37 1.03 (2.41) 0.37 2.98 (3.40) 0.05 2.21 (4.39) 0.09 Source: Calculations from authors in Stata 14.2 From this result, the ARDL model estimation results are reliable enough to explain the longterm and short-term relationships between chains via ECM format as follows: Table 6: Results of analyzing long-term and short-term relationships PI t Coef. Std. p-value Nguyen Thi Hoang Yen et al. / Journal of Southwest Jiaotong University / Vol.55 No.4 Aug. 2020 Err. Adjustment Long-run Short-run PIt-1 -0.327 0.091 0.001 GDPGt 1.086 0.509 0.039 CPIt 0.387 0.152 0.014 Rt -1.080 0.324 0.002 M2t -0.111 0.061 0.078 Constant 6.167 3.977 0.128 PI t-1 -0.309 0.110 0.008 R t 0.125 0.111 0.265 R t-1 0.530 0.139 0.000 Source: Calculations from authors in Stata 14.2 With additional collected data of 2019 for GDPG, CPI, R, and M2 variables. The study has forecasted the change of price index for 4 quarters of 2019 (Figure 7). Forecast results show that there is a slight fluctuation between quarters, in which, 1 and 3 are decreasing quarters and 2.4 are recovery quarters. Real Estate Price Index Forecast for 2019 -2 0 2 4 6 ARDL modelling with GDP CPI R M2 2005q1 2010q1 2015q1 2020q1 Quarterly PI Forecast PI Actual From 2005q1 to 2019q4 Source: ADB, IFS Figure 7. Forecast results of real estate price index 2019Q1 Source: Calculations from authors in Stata 14.2 From the above experimental results, the macroeconomic factors have short-term and longterm relationships with Vietnam's real estate prices as follows: Firstly, the coefficient of adjustment of negative errors and the statistical significance at 1% once again confirms the existence of a cointegration relationship in the model. Besides, the adjustment value of 0.327 indicates that the recovery ability to the equilibrium position after each quarter is at an average level. Secondly, in the long term, economic growth and inflation will increase the price index; conversely, rising interest rates tend to reduce only real estate prices. Although M2 harms PIs, however, there is insufficient evidence to confirm this effect (p-value> 0.05). Thirdly, in the short term, changes in interest rates and price indexes in previous quarters have an opposite effect on changes in the current real estate price index. V. CONCLUSION Researching the factors affecting real estate prices is an urgent issue. The research results have theoretical implications through an overview of domestic and foreign studies. Moreover, empirical research also paints a picture of the long-term and short-term relationship of macro factors to Vietnam's real estate price index in recent years. In the long term, economic growth and inflation will increase the price index; conversely, rising interest rates tend to reduce only real estate prices. Vietnam is a developing country that maintains a stable economic growth rate and always has to accept the increase in domestic real estate prices. Before these findings, the Vietnamese government needs Nguyen Thi Hoang Yen et al. / Journal of Southwest Jiaotong University / Vol.55 No.4 Aug. 2020 to make good use of macro tools to regulate real estate prices in particular and to manage the domestic real estate market in general. This study provides evidence for factors such as economic growth, inflation, M2 money supply, and longterm lending rates that affect real estate prices in Vietnam. From here, the study proposes the macro policy implications to stabilize real estate prices, specifically as follows: Firstly, promoting the parallel economic growth model with 2 adequate (quantitative) appropriate (quality) objectives: (i) Ensuring the principle of the proper, adequate and timely collection; (ii) More drastically in combating embezzlement and wastefulness; (iii) Promote socialization expansion to reduce the burden on the budget; has just exploited the resources of society. Secondly, control monetary policy, market interest rates, and inflation targeting: The government and the central bank once set the target of how much inflation should be consistent throughout monetary policy management. The inflation target is very important for investors because inflation affects interest rates, the ability to pay debts. If the State Bank of Vietnam is not consistent, investors are in a mood of fear and fear of risks, so they do not dare to invest in the long-term, causing the opposite reaction which adversely affects economic growth. Therefore, the management of monetary policy in the direction of inflation targeting will help the State Bank of Vietnam create public confidence about the value of the local currency. Third, complete the construction of the real estate price index promptly at the national level and it is necessary to improve the transparency of current status information, transactions, and development in the real estate market. However, the study still exists some limitations in the application of measurement methods of real estate price index which are recalculated according to popular usage formula in the world. 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