The Cumberland Planning Board has given final approval to a 96-unit apartment complex that will more than quadruple the number of market-rate rental units in town.

Board members voted unanimously Tuesday to approve Cumberland Foreside Village Apartments, Town Planner Carla Nixon said Wednesday. Developers Loni Graiver and David Chase plan to build eight apartment buildings with 12 units each on property on the town’s southern edge between Route 1 and Interstate 295. Most of the apartments will be rented at market rates, but a portion will be reserved for people age 55 and older.

One town councilor, however, has concerns about the project and urged the board to delay its approval.

The proposed apartment buildings will be sited next to a single-family housing development with prices starting at $300,000.

In July, Graiver said the proposed development would be a mix of one- and two-bedroom apartments. The typical rent would be $1,250-$1,550 a month with heat included, he said. Under the terms of a contract zone approved by the Cumberland Town Council, 20 percent of the units will be reserved for people age 55 or older. Units could be ready to rent by March 2017, Graiver said in July.

Graiver did not return an email Wednesday requesting comment on the project. The construction cost of the buildings is approximately $10.6 million and public improvements, such as sewer and water lines, will cost about $1.3 million, according to a notice of project approval from the town.

Cumberland’s housing market is almost exclusively single-family homes, with fewer than 20 market-rate apartments not reserved for senior or low-income residents, according to the town. That makes it difficult for people who want to live in Cumberland, but either can’t afford or don’t prefer to buy a home in the affluent community. The town’s 2009 comprehensive plan emphasized the need for affordable housing.

Soaring demand and scarce supply for apartments in Portland are driving a housing construction boom in the city and nearby communities, sometimes raising tensions between developers and residents.

A proposed 500-unit housing development in Westbrook, for example, has alarmed residents , some of whom have asked the city for a moratorium on residential construction permits in an attempt to slow rapid growth.

The same sort of opposition hasn’t materialized in Cumberland, but Shirley Storey-King, a town councilor, has repeatedly questioned the proposal. Storey-King lives on a residential street off Middle Road, across the highway from the proposed development.

In a letter read to the Planning Board on Tuesday, Storey-King said she believes the board was moving too fast to approve the development.

Storey-King said she worried the developer had not done enough to prevent light pollution from the apartment complex. She also said a stormwater plan submitted by the developer might be inadequate and there were inconsistencies in the application, among other concerns.

“As I have done every time I have spoken, I share again my belief that this proposal is too much development for this property,” Storey-King wrote.

“Over 200 people on just over 10 acres of land. That’s 20 people per acre. That’s a lot of impact,” she said.