0101 GMT January 19, 2020
An almost non-existent banking link between the two countries has always been a niggling problem which has held up projects from moving forward.
The banking issue is the "most important problem", Mohammad Saeed Shahmiri, an executive with the Iranian company Saab Niroo which specializes in building infrastructure told Reuters.
His firm is studying projects in and around Damascus, according to the news agency.
"We hope if they solve this problem, immediately we can start the project here," Shahmiri said.
Because of terrorist attacks and US-led bombings, millions of homes, educational and health facilities, and infrastructure remain either damaged or destroyed.
Iran is best placed to play a leading role in their reconstruction because it is currently the Middle East's largest producer of cement and steel.
Western sanctions on both Syria and Iran have affected banking transactions between the two countries which are cut from the US financial system.
Chairman of the Syrian chambers of commerce Mohamad Hamsho said agreements had been concluded to "overcome obstacles with respect to the banking activity between Iran and Syria".
On Monday, Iran and Syria signed 11 agreements, including a 'long-term strategic economic cooperation' deal which includes industry, trade and agriculture.
The agreements covered a wide range of fields including economy, culture, education, infrastructure, investment and housing, the SANA reported.
They included two memos of understanding between the railway authorities of the two countries as well as between their respective investment promotion authorities.