Common Electrical Co. has pushed again the anticipated opening of its new tower overlooking Fort Point Channel by two years after deciding to break the headquarters challenge into two phases.

GE vice chairman Ann Klee stated in a memo Tuesday to Boston workers that executives anticipate the 12-story building, dubbed South Point, to open in mid-2021, in contrast with an earlier aim of 2019. Two older brick buildings, collectively dubbed North Point, might be renovated first, with the intention of opening them within the first half of 2019.

GE has already began work on the 2 previous buildings, initially a part of a Necco sweet manufacturing complicated. However development on the new tower was supposed to occur concurrently with a lot of the Necco renovations.

Now, GE will end the Necco buildings and transfer workers into them earlier than beginning development of the new building. GE expects it'll take 24 months to full the new construction.

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“As with all development challenge of this scope and complexity, we've got been periodically reviewing the schedule and price range,” Klee wrote within the memo. “Primarily based on that assessment, we've got determined that it makes extra sense and is extra price-efficient to assemble the campus in two phases.”

The announcement comes lower than two weeks after John Flannery’s promotion to the chief govt’s job at GE. He took over from Jeff Immelt, who will stay chairman till the tip of the yr. Flannery has stated he's reviewing all of GE’s operations, which would come with the headquarters challenge.

The whole campus might be dubbed “Innovation Point” and include almost 400,00zero sq. toes of inside area unfold among the many three buildings. The futuristic 12-story building, designed by Gensler, will function a large photo voltaic sail and symbolize a placing departure from Fort Point’s previous brick warehouses and the newer glass towers within the Seaport.

The industrial large relocated its headquarters to Boston’s Fort Point neighborhood roughly one yr in the past, to non permanent places of work on close by Farnsworth Road, whereas it labored on lining up its permits for its new complicated on the northern fringe of Procter & Gamble’s Gillette campus.

Touchdown GE’s headquarters was thought of a giant win for Mayor Martin J. Walsh and Governor Charlie Baker on the time. The administrations labored carefully collectively to recruit GE. Immelt stated he was drawn to town partially due to its innovation tradition.

As a part of the hassle to appeal to GE from its former hometown of Fairfield, Conn., metropolis officers promised $25 million in property tax reduction over a 20-year interval. The settlement with town requires GE to have 800 individuals working within the new headquarters by 2024, and GE officers stay assured they'll nonetheless hit that quantity. Greater than 250 individuals work on the Farnsworth Road places of work at the moment.

State officers, in the meantime, pledged no less than $125 million for GE’s new campus. Almost all the state cash consists of grants to be used for buying and renovating the 2 previous Necco buildings.

For that motive, MassDevelopment owns the 2 brick buildings, and GE would be the company’s tenant.

An infrastructure program that state officers are tapping doesn’t permit the funds to be spent on a privately owned building. However these state funds additionally aren’t contingent on assembly hiring targets.

In December, P&G accomplished a deal to switch 2.four acres alongside the Fort Point Channel for the headquarters complicated. P&G pocketed $83 million from the deal. MassDevelopment purchased the portion with the 2 brick buildings for $57.four million, whereas GE spent $25.6 million for the remaining piece.

GE subsequently grew the scale of the entire campus space to 2.7 acres after it purchased an extra sliver of land from P&G for $.5 million, to meet a state open area requirement for waterfront land.

GE had beforehand estimated that the challenge will price $200 million to construct, a determine that didn’t embody the worth tag for the land however did embody the state-funded renovations to the 2 previous Necco buildings.

The property tax break that the Walsh administration provided GE is without doubt one of the largest within the metropolis’s historical past, comparable in dimension to one authorized in 2010 for Liberty Mutual’s headquarters enlargement.

The dimension of GE’s annual tax break will climb steadily over the primary seven years earlier than reaching $.5 million. GE doesn’t want to hit any employment requirement throughout that transition interval, giving the corporate appreciable wiggle room for development delays.

The tax break simply applies to the new building, and metropolis officers have stated GE would nonetheless pay town almost $50 million in taxes for that building alone over 20 years.

Jon Chesto will be reached at jon.chesto@globe.com. Observe him on Twitter @jonchesto.