For years, the idea of taking a GO train from Bowmanville, Courtice or central Oshawa was something people talked about more than something they could see. That has changed. Construction is now under way on the Bowmanville GO Extension, the project that will carry the Lakeshore East line past its current end at Durham College Oshawa GO Station and into Clarington. And despite the project’s name, this isn’t only a Bowmanville story: the extension adds two new stations in Oshawa, one in Courtice and one in Bowmanville.
Here is what is confirmed, what is being built right now, what is still unknown, and what it could mean if you live, own or plan to buy along the route.
What is being built
The extension adds 18.7 kilometres of new track east of Durham College Oshawa GO Station, with four new stations: Thornton’s Corners East and Ritson Road in Oshawa, and Courtice and Bowmanville in Clarington.
According to the Ontario government, trains are planned to run every 30 minutes during peak periods, hourly during off-peak periods and every two hours on weekends. Metrolinx says a trip from Bowmanville to Union Station is expected to be about 15 minutes shorter than taking a bus to the train at Oshawa today.
Metrolinx projects about 17,000 daily trips on the extension by 2041.
| Station | Municipality | What the municipality says about the location |
|---|---|---|
| Thornton’s Corners East | Oshawa | Near Fox Street and Laval Drive |
| Ritson Road (the City of Oshawa calls it Central Oshawa) | Oshawa | 500 Howard Street, between Simcoe Street South and Ritson Road South |
| Courtice | Clarington | Centre of the Courtice Transit-Oriented Community plan area, south of Bloor Street and north of Highway 401 |
| Bowmanville | Clarington | Centre of the planned Bowmanville West Urban Centre |
Sources: City of Oshawa (GO East Durham) and Municipality of Clarington (GO East Clarington). Station designs and details can still change.
Where the project stands today
This is no longer only a plan on paper. The key milestones so far:
- Spring 2025: early works began, including tree clearing, soil investigations along the corridor and a new watermain in Oshawa.
- January 2026: Metrolinx awarded the major construction contract, and on January 27 the Ontario government announced it had broken ground.
- January 2026: replacement of the Simcoe Street bridge in Oshawa started.
- March 2026: work began to demolish and replace the Farewell Street pedestrian bridge. Metrolinx’s construction notice says the bridge will be closed for about two years, with a pedestrian detour in place.
Metrolinx lists more bridge work still to come, at Green Road, Wilson Road and Farewell Creek, along with a new rail bridge over Highway 401, utility relocations, upgraded level crossings and changes to the Durham College Oshawa GO and VIA station building.
What is still unknown
The most common question is the one without an official answer: when will trains run? As of early October 2026, neither Metrolinx’s project page nor the Ontario government’s January announcement gives an opening date. The 2041 figure you may have seen is the year used for ridership projections. It is not a published opening date.
Station designs, parking and final construction staging are also not fully public. If a firm date matters to a decision you are making, treat any date you hear as unconfirmed until Metrolinx publishes one.
How the station areas are being planned
The stations are only part of the story. Both municipalities are planning the neighbourhoods around them.
In Clarington, Council adopted the Courtice Transit-Oriented Community Secondary Plan on December 15, 2025. It covers the area around the future Courtice station and plans for approximately 16,800 new housing units, more than 8,000 jobs, eight schools and 13 parks and parkettes. The plan still requires review by Ontario’s Minister of Municipal Affairs and Housing, and Clarington describes it as a long-term vision that will unfold over several decades.
A second plan, for the Bowmanville West Urban Centre around the future Bowmanville station, is still in draft. Clarington says the two areas together are planned to accommodate more than 25,000 housing units.
In Oshawa, the City identifies the two station sites as Thornton’s Corners East and Central Oshawa, the latter on the former Knob Hill Farms property on Howard Street.
TMG Perspective
A project like this changes an area slowly, and in stages. Our read is that three things are worth keeping in mind.
Construction comes first. For the next few years, the most visible effects near the corridor will be bridge closures, detours, noise and trucks. If you live near Simcoe Street, Farewell Street, Wilson Road or Green Road, Metrolinx’s construction notices are the best source for what is planned and when.
The planning matters as much as the train. The station-area plans show where Clarington and Oshawa expect new housing, shops, schools and parks to go. If you own or are buying near a future station, it is worth reading the plan for that area. It tells you what could be built around you over time.
Be careful with value claims. It is common to hear that a new GO station will raise nearby property values. We have not seen local evidence that would let us say how much, when, or for which properties, and with no confirmed opening date it would be a guess. A home near a future station should still make sense for you on its own merits today.
What this means for you
- Homeowners near the corridor: check Metrolinx’s Bowmanville Extension page and construction notices so work near you is not a surprise.
- Buyers: if a future station is part of why you like a location, ask how long you would be comfortable waiting for it, and look at today’s commute from that address as well.
- Sellers: the extension is a fair point to mention in a listing near a future station, as long as it is described accurately: under construction, with no announced opening date.
Thinking about a move along the route?
If you are weighing a purchase or sale in Oshawa, Courtice or Bowmanville and want to talk through how the extension and the station-area plans fit your own timeline, I am happy to help, no obligation.
Julie Marticorena, REALTOR®
The Marticorena Group | LPT Realty, Brokerage
julie@themarticorenagroup.com | (416) 526-3786 | https://themarticorenagroup.ca
Related reading: Whitby GO Transit-Oriented Community: What’s Proposed and What Happens Next and Downtown Oshawa’s Foundry District: What 3,000 New Rental Homes Could Mean for Durham. More local coverage in our Local & Community archive.
About this article. Project scope, construction status and travel-time information are from Metrolinx’s Bowmanville Extension project page and its Farewell Street bridge construction notice (February 2026). Service frequency and the January 27, 2026 groundbreaking are from the Ontario government’s announcement. Station locations and station-area planning are from the City of Oshawa and the Municipality of Clarington. Information is current as of October 5, 2026 and is general information, not advice about a specific property.
Featured image: GO Train at Oshawa GO Station (2025-01-24) by Dillan Payne, via Wikimedia Commons, licensed under CC BY-SA 2.0. The image has been cropped and resized from the original; this adapted version is likewise available under CC BY-SA 2.0. It shows the existing Durham College Oshawa GO Station, where the extension begins, photographed in January 2025.
About the author. Julie Marticorena is a REALTOR® with The Marticorena Group serving Durham Region and the Greater Toronto Area. With more than 15 years of experience in financial services and a background in strategic planning, negotiation, and project management, Julie brings an analytical and organized approach to real estate. She focuses on education, transparency, and personalized guidance, helping buyers, sellers, and investors make informed real estate decisions with confidence. Julie is fluent in English and Spanish.
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