The Gulf state's contribution is the sole significant sign of rebuilding in the Gaza Strip, where some 100,000 people remain displaced 18 months after the fighting, with economic growth stifled by Israeli and Egyptian blockades.
The Qatari donations have buoyed Gaza's de facto Islamist Hamas rulers, irking Israel and the U.S.-backed Palestinian administration based in the occupied West Bank. Past efforts by Qatar to mediate between Hamas and Israel yielded little.
After the 2014 war, Qatar pledged $1 billion for building projects in Gaza, of which $50 million was paid to owners of destroyed houses to fund the rebuilding of shelters. Qatar envoy Mohammed Al-Amadi said 1,000 new homes had been completed since.
"Qatar exerts every effort to help the people of Gaza in the fields of electricity, agriculture, infrastructure and housing, including the rebuilding of completely destroyed houses," Amadi told Reuters.
Gaza economist Maher Al-Tabbaa said reconstruction efforts were being hampered by difficulties in bringing raw materials to Gaza.