The development application was lodged with the City of Launceston Council and is open for public comment until Monday.

However, concern has been raised over two Californian Redwood, or Sequoia sempervirens, trees located on an adjacent property, formerly known as Torkington.

Torkington is a property is listed on the Tasmanian Heritage Register but the status of whether that includes the trees is still unknown.

The trees are listed on the National Trust website as "trees of significance" and are estimated to be more than 120 years old.

According to the development application on the City of Launceston Council's website, the new owners plan to demolish the existing property and build a six-bedroom home.

Some vegetation will be removed during the development, but the application does not make specific mention of the redwood trees, since they are not on that property but the neighbours'.

Two different trees are mentioned in the DA, with one listed for removal and the other to stay; neither of these trees are on the heritage register but the proponent lists them because of their historic value.

Neighbour spokeswoman Glenda King said as the trees were located close to the proposed development at 14-6 St George's Square it was likely the root system would encroach the boundary.

She said neighbours were concerned that the setback of the proposed house would be too close to the trees and would disturb their delicate root system.

An arborist's report from 2015 on the health of the tree notes it "protrudes over the boundary into 14-16 St Goerge's Square, on the tree's northern two sides.

"The protrusion is at the base of the sequoia and at its greatest point is estimated at 600mm."

This report was undertaken at neighbours' request prior to a previous development at 5 Scott Street, which worked within the tree protection zones noted in the report.

The arborist's report states: "the long term survival of both trees is far from confirmed under the current developments [Scott St], should use of heavy machinery take place within the root zone."

A diagram of the vegetation that will be removed is included in the DA and notes the two sequoias as neighbours' trees and notes the location of the two trees that will be removed during the process.

Ms King said the group of neighbours was not against the development of the property but wanted more consideration to the historic trees to be made.

She said in addition, the development application states it will remove a red brick fence that runs across the front of the property, which she says should be maintained because of its historic value.

The DA states the fence is in poor condition and despite the owner making several attempts to maintain it, has made the decision to remove it in the development of the new house.

"The owner has made numerous attempts to secure the wall, in an attempt to stabilise and maintain it. However, the costs of continued maintenance are not considered sustainable," the DA reads.

The wall will be removed in its entirety and replaced with a steel Georgian-style fence along both St George's Square and the Scott Street frontage of the premises.

It is understood the wall is not listed on the Tasmanian Heritage Register or on the Heritage Code for Launceston's interim planning scheme.

Attempts were made to contact the owners of 14-16 St George's Square.