Photo: Map 1 will be debated along with a second map by Belmont Town Meeting

A vote of which of two maps Belmont will present to the state on promoting new future housing will highlight the first of three nights of the Fall Special Town Meeting taking place on Nov. 18-20 at the Belmont High School auditorium.

The meeting will begin at 7 p.m.

As the Town Meeting attempts to finish its work in three nights – “We will not meet for a fourth night under any circumstances” said Town Moderator Mike Widmer, – each night could go as late as 11 p.m. to accomplish the ambitious goal.

Monday’s agenda will see Town Meeting debate the MBTA Communities Act [ Section 3A of MGL c. 40A] requires towns such as Belmont to create at least one zoning district in which multi-family housing is permitted as of right and meets other criteria set forth in the statute. While there has been , the new zoning is “aspirational” as no new housing is required to be built under the law.

The maps – Map 1 was created over the past year by a citizen’s group and the Planning Board – have two large and one smaller subdistrict falling under the law.

The maps differ in one significant area: Map 1 – which will be presented by Planning Board Chair Taylor Yates – carves out three zoning districts; in the Waverley neighborhood, Belmont Center and a small subdistrict along Belmont Street at the Cambridge town line. Map 2, which will be an amendment to Map 1, retains the two larger zoning district but swopes the Belmont Street subdistrict with the property on Hittinger and Brighton where the Purecoat Plating facility and a dog daycare business is located and the Frank French business adjacent to the MBTA commuter rail line and Brighton.

Town officials and residents who have supported greater commercial development to provide additional tax revenue to the town are backing Map 1 while those advocating for more housing are supporting Map 2.

Before the map vote, there are three additional amendments – one will be a fix to an appendix item concerning the Belmont Housing Authority (known as Epstein Amendment 2), another on lowering building heights in the zones, and finally an amendment removing building footprint maximums and building separation requirements.

After what is expected to be a lively discussion on the amendments, Town Meeting will vote on Epstein’s Map 2 amendment first. If it fails to garner a majority of member votes, discussion will continue on Map 1 as the main motion. But if the Epstein amendment passes, Map 2 will replace Map 1 and will ultimately be voted on.

After votes on the three amendments, the main motion will be discussed and voted on. If the final map article fails, then Belmont will be out of compliance with Section 3A which could result in state sanctions.