Hong Kong cuts Northern Link rail budget to HK$86.2 billion, targets full opening by 2034

A cheaper Northern Link moves into full construction

Hong Kong has approved financial arrangements for the remaining Northern Link railway works, putting a project budgeted at HK$86.2 billion on course for a simultaneous opening of its Main Line and Spur Line by 2034 or earlier. The government says the revised construction estimate is 28% below its previous estimate, while combining the two lines brings the Spur Line's planned opening forward by two years.

The Chief Executive in Council approved the Part 2 financial arrangements on November 10, 2026. Representatives of the Transport and Logistics Bureau and MTR Corporation then signed the agreement covering the full project, with transport secretary Mable Chan and MTR's chairman witnessing the signing.

The government's Northern Link announcement sets out two connected routes: a Main Line linking Kam Sheung Road with Kwu Tung, and a Spur Line branching from San Tin to Huanggang Port in Shenzhen. Together, they are intended to serve new neighbourhoods, technology centres and journeys across the boundary.

Passengers travelling between Kam Sheung Road and Kwu Tung during busy periods are expected to see their journey fall from about 60 minutes to 12 minutes. That is a saving of 48 minutes, or 80%, for each journey between those stations.

What the HK$86.2 billion budget covers

Part 2 has a verified estimated construction cost of HK$54.8 billion, following government scrutiny with assistance from an independent checking consultant. It covers railway tunnels, stations, a depot, and electrical and mechanical systems and equipment for the full railway.

Part 1 accounts for approximately HK$31.4 billion. Together, the two parts produce the HK$86.2 billion total, expressed in July 2025 prices. Using a fixed price date gives the estimate a common basis for the cost of labour, equipment and materials.

MTR describes the Northern Link as the most expensive construction project it has undertaken. Part 2 represents about 64% of the total budget, calculated from HK$54.8 billion out of HK$86.2 billion, so most of the estimated construction cost sits within the arrangements just approved.

The government attributes the lower estimate to changes in standards, faster approvals, integrated construction and the savings associated with a shorter programme. The published figures give the combined reduction as 28%, without assigning a separate saving to each measure.

Where the Main Line will run

The Main Line will be a railway running underground for 10.7 kilometres, with five stations. Kam Sheung Road will provide an interchange with the Tuen Ma Line, while Kwu Tung will connect with the East Rail Line. The three intermediate stations will be Au Tau, Ngau Tam Mei and San Tin.

Those connections will create an east to west railway corridor through the Northern Metropolis, joining two existing lines into a wider railway loop. Residents in the new development areas will gain access to both routes through the new interchanges.

Part 1 includes works at Kwu Tung, Au Tau and Kam Sheung Road, together with two sections of running tunnel. The newly agreed Part 2 covers the remaining Main Line works, including Ngau Tam Mei and San Tin stations.

The 12 minute forecast applies to the journey between Kam Sheung Road and Kwu Tung during peak periods. A passenger continuing beyond either interchange would also need time for any transfer and onward train journey.

A branch from San Tin to Shenzhen

The Spur Line will branch from San Tin and run for approximately six kilometres, including about 1.1 kilometres in Shenzhen. Its three stations will be Chau Tau, the Loop and Huanggang Port, with a forecast journey of about 11 minutes between San Tin and the port.

The government's latest route description gives the length as about six kilometres; an account of the October 2025 construction launch described the Spur Line as 4.2 kilometres. The current agreement uses the longer figure, including the Shenzhen section.

Mable Chan, Hong Kong's secretary for transport and logistics, described the connection to Huanggang Port as one of the project's three main purposes:

Thirdly, the project will connect to the Huanggang Port, thereby integrating the metro networks of Hong Kong and Shenzhen and strengthening infrastructure interconnectivity in the Greater Bay Area.

The port is planned to use a cooperative inspection arrangement described as joint checks with a single clearance. Northern Metropolis Advisory Committee member Lau Kwok-fan has pointed to this arrangement as part of the Spur Line's value for travel between Hong Kong and Shenzhen. The 11 minute estimate is the railway journey between San Tin and Huanggang Port; passengers will also need to complete the required boundary procedures.

One construction project, agreed in stages

MTR is combining planning, design and construction for the Main Line and Spur Line while agreeing the project in stages. The full scheme involves eight new stations, about 17 kilometres of railway tunnels, and a shared depot at Ngau Chak Wai, alongside other railway facilities.

The Part 2 agreement includes the tunnels between Huanggang Port and Au Tau and the shared depot. It also covers preparations before services begin, followed by operation, servicing and maintenance of the entire Northern Link.

The main milestones show how the financial approvals and construction programme have developed:

• July 8, 2025: The Chief Executive in Council approved the financial arrangements for Part 1.
• October 3, 2025: Main Line construction officially began, alongside the start of detailed design for the Spur Line.
• November 10, 2026: Part 2 financial arrangements were approved and the full project agreement was signed.
• 2027 to 2029: MTR forecasts rising annual construction expenditure for Part 2.
• 2034 or earlier: The Main Line and Spur Line are targeted to open together.

MTR says the entire alignment will be underground, a choice intended to reduce the time needed for land acquisition and take conservation considerations into account. Land procedures remain necessary for some of the associated property developments.

How property development will support the railway

The government has approved eight development parcels, covering about 46 hectares, to support Part 2 through the Rail-plus-Property model. Under this arrangement, MTR receives property development opportunities alongside responsibility for building the railway.

The parcels are at Ngau Tam Mei Areas 3A, 3D and 4A; San Tin Areas 2A and 2G; Kwu Tung North Areas 23 and 26 East; and part of the residential land in the proposed Au Tau New Development Area. The approved uses include residential and commercial development.

The government will assess the full market land premium on the basis that railway access is provided, then deduct a fixed total amount as financial support for Part 2. A land premium is the payment a developer makes to the government for the relevant land rights. In simple terms, the assistance takes the form of a reduction in that payment.

Lau says the arrangement leaves property market risk with MTR and provides no additional government subsidy if property income falls short. He also says the government can share in increases in land value through later premium payments. His assessment highlights why the eventual property income matters to the railway's finances.

MTR says some sites are still going through land resumption, the legal process by which the government takes land into public ownership. Development depends on the relevant government and Town Planning Board approvals, and completion of resumption of private land under the Lands Resumption Ordinance, Cap. 124. The government will determine the sequence of land grants.

Construction spending rises before property income arrives

MTR expects Part 2 construction expenditure to extend over approximately 10 years. Its projected outlays are HK$1.1 billion in 2027, HK$2.9 billion in 2028 and HK$5.9 billion in 2029, a combined HK$9.9 billion over those three years.

The 2029 forecast is more than five times the 2027 figure. That increase illustrates the larger financing demands as work progresses from the early stages into a more intensive construction period.

MTR says it has sufficient cash resources, experience raising money in different capital markets and a financing plan capable of meeting the expenditure. It has issued bonds in recent years to increase cash flow and says it may also use other financing methods.

The railway and property programmes run on different schedules. Construction bills arise as work proceeds, while development income depends on land availability, approvals and the progress of property projects. MTR's financing plan therefore has to cover expenditure throughout the building programme.

Faster approvals and different railway standards

The Highways Department introduced the Hong Kong Railway Standards in February 2026, drawing on suitable standards from mainland China and other places. The government says this gives railway projects greater scope to use different technologies, materials, equipment and systems.

A dedicated Railway Checking Unit has also been established to examine railway building plans. Chan says the time needed to process those plans has fallen by 30% to 50%. Faster plan checking can allow approved construction activities to begin sooner within the wider programme.

The Northern Metropolis Development Bill proposes further procedural changes, including simpler application procedures and requirements for construction noise permits. Those changes are legislative proposals, while the railway standards and dedicated checking arrangements have already been introduced.

Combining the Main Line and Spur Line is the third major measure cited by the government. It says integrated delivery both reduces costs and allows the Spur Line to open two years earlier than previously scheduled, alongside the Main Line.

What the railway changes for the Northern Metropolis

San Tin Technopole and the technology cluster in the Loop are among the developments the railway is intended to serve. Chan places the Northern Link within Hong Kong's First Five-Year Plan and says it aligns with the National 15th Five-Year Plan Outline.

Lau says Ngau Tam Mei, San Tin and the Loop have inadequate transport connections, and that rail access is vital to the technology projects and the proposed Northern Metropolis university town. For residents, students and workers, the planned stations would bring a direct rail connection to areas currently lacking that access.

Lau has urged the government and MTR to consider opening strategically important stations, such as San Tin, before the whole railway is complete. The approved target remains a simultaneous opening of the Main Line and Spur Line by 2034 or earlier; no separate opening date for San Tin has been announced.

The next scheduled financial milestones are the annual expenditure forecasts beginning in 2027. Land resumption, development approvals and the construction programme will determine how the railway and its supporting property projects advance toward the opening target.

Key Points

• The Northern Link's estimated construction cost is HK$86.2 billion in July 2025 prices, 28% below the earlier estimate.
• Part 2 accounts for HK$54.8 billion and covers the remaining Main Line works, the Spur Line and associated railway facilities.
• The 10.7 kilometre Main Line will link Kam Sheung Road and Kwu Tung, with a forecast peak journey of 12 minutes instead of 60.
• The Spur Line will run about six kilometres from San Tin to Huanggang Port, with an expected journey of 11 minutes.
• Eight property development parcels covering about 46 hectares will support financing through a fixed reduction in land premiums.
• Both lines are targeted to open by 2034 or earlier, bringing the Spur Line's schedule forward by two years.