After peaking at $71.58 billion in 2010, local builders' overseas construction deals have been on the decline, hovering around $60 billion till 2014 as they competed to win more projects at lower prices.

In 2015, their overseas deals amounted to $46.14 billion, also down 30.1 percent from a year earlier.

Such a sharp drop was also attributed in part to low global oil prices that led to a sharp drop in orders placed by oil-producing countries in the Middle East, their largest clients.

Construction orders from Middle Eastern countries had easily accounted for more than 70 percent of all overseas orders won by builders here.

However, in 2016, orders from Middle Eastern countries plunged more than 35 percent on-year to $10.7 billion, accounting for only 38 percent of the total, according to the data from the association.

In tandem with the industry trend, local builders lowered their overseas order targets for the year, but the sources said their overseas business performance would be better than expected this year as oil prices are widely expected to hover above $50 per barrel.

Hyundai E&C cut its overseas order target to 13.37 trillion won ($11.67 billion) for the year from last year's 16.42 trillion won.

GS Engineering & Construction Co. also lowered its target for overseas projects to 3.85 trillion won from 5.08 trillion won.

Local builders' performance in recent months was not so bad, although their overseas orders dropped 46 percent last month from a year earlier to $1.6 billion.

Earlier this month, Daewoo Engineering & Construction Co. signed a $590 million deal to expand and build an expressway in Qatar, and a consortium led by SK Engineering & Construction Co. and Daelim Industrial Co. was picked as the preferred bidder last month for a 3.5 trillion-won project to build the world's longest suspension bridge in Turkey.

In December last year, Daelim Industrial also bagged a 2.3 trillion-won deal to improve oil refinery facilities in Iran, the largest contract secured by a domestic construction company in Iran.

One of the reasons for the rosy outlook for the local builders is relatively high oil prices. Recently, oil prices have hovered above $50 per barrel.

Oil prices have been in the doldrums since 2015 on concerns of an oversupply, and things were almost the same last year, as international sanctions on Iran were lifted, allowing the oil-rich country to add new barrels to an already glutted global market.

Crude oil prices, measured by Dubai crude, briefly dropped below $30 a barrel in January 2016, hitting a more than 10-year low. But since the second half of last year, oil prices rebounded hovering above $50 per barrel during the fourth quarter of last year.

"This year's oil prices will move between $50 and $60 per barrel," said Jung Jun-hwan, a researcher at the Korea Energy Economics Institute.

Rising oil prices increase the chances of Korean builders securing more mega overseas deals.

"Stable oil prices will prod Middle Eastern countries to place more orders, which is a boon for local builders," said Lee Kyong-ja, an analyst at Korea Investment & Securities. "Local builders are expected to clinch more overseas orders this year."

Analysts also said local builders are not competing to win deals at lower prices, which will also boost their profitability down the road.

"Local builders are trying to improve their profitability from overseas deals," said Jang Moon-joon, an analyst at HI Investment & Securities Co. "New orders to be clinched will be more lucrative than before."

South Korea's government is also working hard to help local builders win more overseas deals.

Starting this year, the government plans to select 20 prospective and promising overseas projects, each worth over $1 billion, and help local construction firms win those deals.

To this end, the government plans to name up to four regional ambassadors to Asia, Central America and the Middle East, who will specifically work to help local builders win new construction orders in their regions.

The government hopes such measures will increase the total amount of construction orders to over $35 billion this year.

A series of mega projects are in store this year with local builders eyeing to win such deals. They include a $6 billion refinery project in Oman. (Yonhap)