Syria peace talks involving world powers in Vienna in October called for a nationwide ceasefire and a renewal of U.N-brokered talks between the rival Syrian sides. Saudi Arabia is convening an opposition conference this week as part of that process.
Homs Governor Talal al-Barazi told Reuters this week he felt "positive, good and promising steps" were being made towards implementing the accord, which started with a ceasefire.
Humanitarian aid reached the Waer district last week under the terms of the agreement.
The Syrian army and allied militia launched a major ground offensive north of Homs city after Russia, the main ally of Assad, began carrying out air strikes in support of the Syrian military more than two months ago.
U.S. President Barack Obama said last month that there may start to be pockets of ceasefires in parts of Syria, freeing opposition groups from Russian bombings.
The Homs deal follows the stalling of a separate plan aimed at halting fighting between rebels and government forces near Damascus.
In late September, Iran and Turkey, which back opposing sides in the Syrian conflict, also helped bring about local ceasefires in the town of Zabadani near the Lebanese border and in two villages in the northwestern province of Idlib.
A diplomat tracking Syria said the Waer agreement was an improvement on previous local ceasefires because it was directly negotiated by Syrians, rather than involving outside states.
"Some people are talking about 40-50 local ceasefires waiting on the shelf to be discussed," the diplomat said.