Tisbury residents will vote Tuesday on whether to take on some $7 million in new debt, and a consequent rise in their property taxes.

The election ballot includes five Proposition 2 1/2 questions — four of them relating to funding for the town’s proposed new emergency services facility — corresponding to articles voted on at last month’s special town meeting.

The plan is to colocate the town fire, ambulance and emergency management services at a site away from the busy downtown area. The current fire station, built almost 45 years ago, is too small, and a study concluded the cost of repairing and/or extending it was prohibitive.

The first ballot question is the big one. It seeks approval to borrow $6.8 million for the construction of the new building on Spring street, opposite the Tisbury School, on town land which is currently the site of the town hall annex.

Last month’s special town meeting endorsed the proposal by a surprisingly large margin, given the current state of the economy, 167 to 22. A second, related article, proposing the borrowing of another $115,000 to temporarily relocate the annex, passed even more easily — 171 to 6.

The question of borrowing to fund the annex relocation will be the second question on Tuesday’s ballot.

If approved, the two measures would raise property taxes by about $25 per $100,000 — or about $200 a year on an average $800,000 property.

The cost would be mitigated by the rolling-off of other town debt. The incremental cost to taxpayers would be $17 per $100,000 in year one, $9 in year two, then $8, then nothing.

Each of the other two related questions on the ballot are for the possible installation of solar panels on the new building, at a cost of $100,000 each.

Voters did not endorse that spending, although it was close. So the outcome of Tuesday’s poll will be irrelevant, even though the two questions remain on the ballot paper.

The remaining question on the ballot, question five, is an unusual one. It seeks approval for an override to make the final debt service payment for a bond originally issued in 2001.

Tisbury finance director Tim McLean said if the question is approved, it will help the town out of a budget hole.

“The money was borrowed to cap the landfill and put the park and ride lot up on High Point Lane. We never had a debt exclusion for it; we always paid it within our regular municipal budget,” he said, adding:

“There is just one payment left on that bond, in fiscal 2011. But we are so tight against our levy limit this year that we decided to put that on the ballot.

“If that were to pass it would take a lot of the strain off the budget,” he said. “It would give us another $150,000 of spendability.”

It could make the difference between a zero budget and one in which the town is forced to make cuts.

Polling is at the American Legion Hall, from 7 a.m. to 8 p.m.