East Japan Railway Company (JR East) opened its mixed-use development “Oimachi Tracks” (大井町トラックス), built on part of a former rail yard, on March 28, 2026. The same day, the 285-room “Hotel Metropolitan Oimachi Tracks” opened on floors 5–13 and 26 of the Hotel & Residence Tower. According to MetroEngines Research data, room stock within 1km of Oimachi Station rose by 285 rooms (+10.3%), from 15 properties / 2,779 rooms at end-2025 to 16 properties / 3,064 rooms in 2026. Shinagawa Ward’s estimated settled ADR (35–38 properties) beat the prior year in April–May, fell below it in June–August, and returned above it in September at ¥12,079 (+1.9%). This article treats the first six months after opening as a case of “how a market behaves when supply rises by 10%”, and uses measured data to compare the ward with neighboring wards and Tokyo as a whole, read the ward’s booking curve, examine how each price band fills, and map the pipeline of hotels inside railway companies’ mixed-use developments.

Hotel floors inside a mixed-use development — floors 5–13 and the top floor of a 26-story tower, 285 rooms

First, the subject itself. In our planning data based on MLIT’s “Statistics on Building Construction Starts”, the project is registered as a new 26-story building with a gross floor area of about 250,000㎡ at “Hiromachi 2-chome and other lots, Shinagawa Ward”, with East Japan Railway Company as the building owner; principal uses are office, hotel, retail, residential and parking, and the hotel is registered at 285 rooms. According to press reports (Impress Watch, Travel Watch), the complex consists of two towers about 115m tall. The hotel occupies floors 5–13 and 26 of the “Hotel & Residence Tower”, with reception, lounge and all-day dining on the 5th floor, guest rooms on floors 6–13, and a rooftop bar on the 26th floor. It is operated by Nippon Hotel Co., Ltd.; all rooms are non-smoking, the room mix is 143 twins, 141 kings and 1 suite, and the gym is reserved for hotel guests. The opening commemorative plan was announced from ¥16,100 per room for 2 guests (tax and service charge included, breakfast extra), with breakfast at ¥3,000 per adult (tax included).

What public materials reveal about the non-hotel floors: the “Shops & Restaurants” retail zone with 81 food and retail stores, TOHO Cinemas Oimachi on the 3rd floor (8 screens, 1,205 seats), a bathhouse on the 4th floor, office space in the adjacent Business Tower that was fully leased at opening, and the “Oimachi Tracks Residence” rental housing. Three plazas take up roughly half of the approximately 22,000㎡ site, and a pedestrian deck links the complex to the station. In addition, Shinagawa Ward’s new city hall is scheduled to open on an adjacent lot in 2029, with a published plan to connect it directly to the station by deck. In other words, the hotel floors were designed as an “in-complex hotel directly connected to the station”, surrounded by multiple sources of stay demand: offices, retail, housing and the ward office.

Source: Impress Watch, Travel Watch, Nippon Hotel Co., Ltd. press release (October 2025), and MLIT “Statistics on Building Construction Starts”; compiled by MetroEngines Research & Consulting

Public data on the location: the official land price at the station-front benchmark site (Oi 1-chome 10-4, commercial) was ¥2.41m/㎡ in 2024 (+9.5% YoY), ¥2.70m/㎡ in 2025 (+12.0%) and ¥3.22m/㎡ in 2026 (+19.3%), with the rate of increase widening for three straight years. The residential area northwest of the station (Nishi-Shinagawa 1-chome) also reached ¥886,000/㎡ in 2026 (+12.3%), confirming land prices that already price in the redevelopment. As for the size of the station catchment, JR Oimachi Station handled 211,676 passengers/day in FY2019 and 168,378/day in FY2023 (both from MLIT National Land Numerical Information, passengers by station), plus 112,975 on the Tokyu Oimachi Line and 68,116 on the Rinkai Line (same fiscal year). Traffic has not returned to pre-COVID levels, but with offices, retail and housing all delivered at once from 2026, the figure itself has room to be pushed up.

Room stock within 1km of the station — from the 2,500-room range, nearly flat for 9 years, to 3,064 rooms

Next, supply. Room stock within 1km of Oimachi Station barely moved over the eight years 2012–2019, at 8–9 properties and 2,516–2,566 rooms. Small capsule and cabin-type properties were added in 2020–2021, bringing it to 2,766 rooms, and it held at 14–15 properties / 2,731–2,779 rooms in 2023–2025. Then 285 rooms arrived at once in 2026, taking it to 16 properties / 3,064 rooms (+10.3%). A defining feature of this catchment is that six properties with more than 150 rooms each account for most of the stock (2,634 rooms combined, 86% of the 3,064-room 2026 stock including the new hotel). Led by a 1,388-room limited-service hotel, followed by a 500-room-class property and chain hotels of just under 200 rooms, the new 285-room hotel ranks third in size within the area. The ratio of additional supply to existing stock for each of the 23 wards is summarized in Tokyo 23 Wards Hotel Supply Pressure 2026.

Source: MetroEngines Research & Consulting (our master data; properties with 20+ rooms. Hostels and small properties with fewer than 10 rooms are excluded from the table). Room counts are the values registered in our master data. Route-Inn closure period per the company’s official notice

What cannot be overlooked here is the gap between the nominal +285 rooms and the number of rooms actually on sale during the observation period. One limited-service property in the area (156 rooms) is closed for full renovation from May 7, 2026 to April 30, 2027 (planned), so on the basis of inventory on sale in June–September, the period this article covers, the net increase is only 285 − 156 = 129 rooms (+4.6% vs end-2025). Once the 156 rooms return after renovation, the full nominal 3,064 rooms will be sellable, so the catchment can be read as entering a further supply-increase phase from spring 2027. Summer 2026 pricing and fill must be read as measurements under a “10% nominal, 5% effective” supply increase.

Shinagawa Ward ADR in the six months around opening — above the prior year in April–May, below in June–August, back above in September

Turning to price: Shinagawa Ward’s estimated settled ADR (35–38 properties, finalized months only) beat the prior year right after opening, at ¥16,100 in April 2026 (prior year ¥15,800, +2.3%) and ¥13,200 in May (¥12,200, +8.3%). But June came in at ¥11,500 (¥12,000, −4.1%), July at ¥11,500 (¥12,500, −7.9%) and August at ¥10,700 (¥12,300, −13.0%), three straight months below the prior year, before September returned above it at ¥12,079 (¥11,849, +1.9%). The June–August three-month average was ¥11,300 versus ¥12,300 a year earlier (−8.4%), and the April–September six-month average was ¥12,500 (−1.9% YoY).

To isolate whether this movement is specific to the ward, the next chart lines up the same months for all of Tokyo and neighboring wards. Tokyo as a whole followed the same shape as Shinagawa, dipping below the prior year in summer (June −3.9%, July −4.8%, August −9.2%) and recovering in September (+1.9%). Ota Ward was −4.6%, −3.7% and −6.9% in June–August and +5.0% in September; Minato Ward was −4.0%, −5.3% and −8.4%, and still −6.6% in September; Tokyo city hotels (by segment) fell the most, at −12.8%, −17.1% and −20.6% in June–August. In short, the summer decline was Tokyo-wide, and Shinagawa’s June–August figure (−8.4%) was a little deeper than Tokyo overall (−6.0%) and Ota Ward (−5.1%), but not as deep as Tokyo city hotels (−16.9%). The same summer movement can be seen on the same metric in our breakdown of Tokyo’s 68 new hotels and 2,055 rooms opening in 2026 by segment, which tracks the sign reversal in estimated settled ADR from June onward.

Source: MetroEngines Research & Consulting (estimated settled ADR YoY, finalized months only. Meguro Ward is a reference value due to the small number of properties)

The summer decline in Shinagawa Ward therefore cannot be pinned solely on “the impact of the 285 new rooms”. It is more reasonable to read it as the overlap of several factors: a Tokyo-wide summer softening as the base; ward supply rising by +10.3% nominal (+129 rooms effective); the new hotel itself still settling its price band, from ¥35,200 (estimated settled ADR) in the opening month to ¥19,800 in June and ¥22,300 in September; and the year-on-year decline in the Tokyo city hotel segment spilling over to the ward’s upper price bands. The fact that the ward as a whole returned above the prior year in September (+1.9%), and that the new hotel’s estimated settled ADR also stepped up to ¥22,300 in September (cheapest listed plan level ¥22,400), shows that price support began to work even during a supply-increase phase. How many months it takes for first-year prices to converge to a normal level has been measured in our study of new-hotel ADR recovery, a median of 2 months, which tracked 182 hotels opened in 2024–2025.

Ward booking curves and fill by price band — about 60% at LT45, over 90% at LT1

After price comes fill. Overlaying Shinagawa Ward’s all-property curves (21–25 properties / 3,628–3,863 rooms, based on major booking site listings) from LT45 to LT1, Saturdays (6/13, 7/11, 8/22, 9/12) reach 64–68% occupancy (OTA-listed inventory basis, estimated) at LT45, 81–88% at LT14 and 90–96% at LT1. Weekday Wednesdays (6/17, 7/15, 8/19, 9/16) start lower at 55–58% at LT45, reach 77–83% at LT14 and 92–96% at LT1, catching up with Saturdays close to arrival. Because the observation period starts in June 2026, the same weeks of the year before opening cannot be overlaid on the same basis; instead, we read the difference in shape between Saturdays and weekdays and the levels reached each month.

Source: MetroEngines Research & Consulting (Shinagawa Ward, fixed cohort of properties listing at least 30% of total rooms on major booking sites, based on inventory listed on the stay date. Property count varies by stay date)

On a monthly average basis, occupancy (estimated) as of the stay date was 93.1% in June, 94.0% in July, 89.5% in August and 91.0% in September; even with supply up, inventory was absorbed to around 90%. The rebound in the average listed price from ¥17,800 in August to ¥21,000 in September is consistent with the reversal in estimated settled ADR in the previous section. Note, however, that these figures are based on a fixed cohort of properties that put at least 30% of their total rooms on major booking sites, and exclude properties with high direct-sales ratios, including the area’s largest limited-service hotel.

So which price band did the 285 new rooms enter, and how did existing properties fill? For the fixed cohort of ward properties listing at least 30% of total rooms on major booking sites (15 properties: 22 that met the criterion on at least 3 of 5 weekdays, minus hostels, cottage-type and other properties with fewer than 10 rooms), the next chart plots listed price (all-plan average, 2 guests per room, tax included) against the LT7 remaining-room ratio for 10 stay dates in May–September 2026 (5 Saturdays and 5 weekdays). The new hotel’s 10 points are spread across listed prices of ¥29,700–56,400 (Saturdays ¥41,900–56,400, weekdays ¥29,700–41,200), the price band just below the two existing top-tier properties in the ward cohort (about ¥49,000 each on the 10-date average), and do not overlap the limited-service band concentrated at ¥20,000–30,000s.

Source: MetroEngines Research & Consulting (same 146 points as the chart above. 4 points below ¥15,000 are excluded because they are one property’s last listed price)

By price band, the median LT7 remaining-room ratio was 17.3% in the ¥15,000–20,000 band, 11.8% in the ¥20,000–30,000 band, 11.0% in the ¥30,000–45,000 band and 8.6% at ¥45,000+ — an apparently inverted relationship in which higher-priced bands have fewer rooms left seven days out. This is likely because the ward’s upper price bands are concentrated in properties of around 200 rooms in front of Gotanda and Omori stations that build up early corporate and inbound bookings first, and it does not indicate the strength of demand for the price band itself. The new hotel’s LT7 remaining-room ratio was 1.4–1.8% on Saturdays in May–June (4–5 of 285 rooms left) and zero on the weekday of 5/20, using up its allotment early; from July onward it widened to 8.8–18.9% on Saturdays and 10.5–26.3% on weekdays (25–75 of 285 rooms left). The price band was held while the range of remaining rooms widened, which can be read as opening demand having run its course and the hotel entering a normal sales cycle.

Looking at the new hotel’s own curves, the July Saturday (7/11) went from 64 rooms left at LT45 to 24 at LT14, with inventory coming back to 29 at LT3 before ending at 19 at LT1; the July weekday (7/15) went from 90 rooms at LT45 to 15 at LT1 — absorption progressing from two weeks out to arrival. In September it held 59–78 rooms at LT45 and still had 48–51 rooms at LT1, keeping inventory right up to arrival, while the cheapest plan was held at ¥37,300 on Saturdays and ¥27,400 on weekdays. Given that remaining rooms are counted within the public allotment (47–62% of total rooms), an approach of keeping inventory without moving price in the last-minute window is consistent with prioritizing brand pricing in the first year, and capturing last-minute demand remains a revenue opportunity ahead.

Hotels inside railway companies’ mixed-use developments — Tokyo pipeline, 2025–2028

From a supply-pipeline perspective, this project is not an isolated case. Extracting from our planning data based on MLIT’s “Statistics on Building Construction Starts” the mixed-use developments in Tokyo that include hotel floors (100+ rooms) and have a railway company as building owner or co-developer yields the following four projects. Takanawa Gateway City (Takanawa, Minato Ward; JR East; 30 stories, GFA about 460,000㎡) has a 200-room hotel that opened as JW Marriott Hotel Tokyo on October 2, 2025. BLUE FRONT SHIBAURA (Shibaura, Minato Ward; Nomura Real Estate and JR East; 43 stories, GFA about 551,000㎡) has a 217-room hotel that opened as Fairmont Tokyo on July 1, 2025. Oimachi Tracks (285 rooms) followed in March 2026, and Shibuya Dogenzaka 2-chome (Tokyu, L Catterton Real Estate and Tokyu Department Store; 36 stories, GFA about 117,000㎡) is registered as a plan including a 100-room hotel, with completion scheduled for March 2028.

Source: Compiled by MetroEngines Research & Consulting from MLIT “Statistics on Building Construction Starts” (100+ rooms; mixed-use developments in Tokyo with a railway company as building owner or co-developer). Opening dates and hotel names are from each company’s public materials and press reports. *Based on building confirmation applications as of the survey date. The number of projects and rooms is expected to grow as further applications are filed; treat these figures as the lower bound of the currently confirmed pipeline

What the four projects have in common is that the hotel is only part of the total floor area (100–285 rooms), sharing direct station access with office, retail and residential floors. JR East has announced a target of ¥100 billion in annual operating revenue by the mid-2030s for its “Greater Shinagawa” area stretching from Shinagawa to Oimachi (Newswitch, March 2026), and the hotel floors are positioned as the function that captures stay demand in the station catchment. The Shibuya project is scheduled for completion in March 2028, and because planning data based on building confirmation applications tends to grow as more applications are filed, the four projects listed here are the current lower bound. With three projects and 702 rooms actually opened in Minato and Shinagawa wards in 2025–2026, hotels inside railway companies’ mixed-use developments have already moved from “plan” to “track record”.

Implications for development decisions on in-complex hotels — three takeaways from six months of data

For developers planning hotel floors in mixed-use developments on railway land or in front of stations, the first six months here are one measured answer to the question “can an in-complex hotel secure a price band different from the existing one?” At 285 rooms, the third largest in the area, it placed its listed prices away from the existing ¥20,000–30,000s band, and even as the ward’s ADR fell below the prior year in summer, the ward as a whole returned above it in September. The demand sources — fully leased offices, 81 retail stores, a cinema, a bathhouse, rental housing and a new ward office due to open in 2029 — are confirmed only to the extent of public materials, and the quantitative effect of cross-referral cannot yet be measured; still, the fact that weekdays fill at listed prices a little under 30% below Saturdays suggests the hotel is starting to work as a base for business demand.

For owners and operators of existing hotels in Shinagawa and Ota wards, the measured facts that ward occupancy (estimated) on the stay date held around 90% even with nominal supply up 10%, and that the LT7 remaining-room ratio is smaller in higher price bands, support a strategy of defending existing price bands while strengthening the build-up of early bookings. As long as the new hotel keeps inventory in the last-minute window, existing properties still have the opportunity to capture last-minute demand at their own price points. Before the 156 rooms under renovation return in spring 2027, locking in an approach that separates price bands for weekday corporate demand and Saturday leisure demand will prepare them for the next supply-increase phase.

For funds and lenders investing in or financing hotels inside mixed-use buildings, the implication is the importance of continuing to monitor not only the hotel floors’ standalone economics but also the relationship between the performance of other uses in the same complex (here, fully leased offices and 81 retail stores) and the hotel’s price band. Land prices here have risen at a widening rate at the station-front benchmark site for three straight years (+19.3% in 2026), and the catchment value underpinning hotel floor rents and management fees is trending up. On the other hand, the hotel floors’ ADR has gone through a process of settling its price band within six months of the opening-month level. The key underwriting points are not to build the first-year operating plan on “opening-month ADR”, and to factor in the catchment’s effective supply (temporary reductions from closures and renovations and their return) on an annual basis.

Sensitivity analysis — building on opening-month ADR overstates annual room revenue by about 70%

The previous section named “not building the first-year operating plan on opening-month ADR” as a key underwriting point. To quantify the gap, we estimated annual room revenue per room (ADR × occupancy × 365 days) under different ADR assumptions and full-year occupancy assumptions, based on the monthly path of the new 285-room hotel’s estimated settled ADR (tax-excluded equivalent): ¥35,226 in the opening month of March 2026 (8 days after opening), ¥26,285 in May, ¥19,835 in June, ¥20,792 in July, ¥19,931 in August and ¥22,258 in September. Occupancy is not a measurement for the new hotel; it is an assumption, using as an upper guide the 89.5–94.0% monthly average (OTA-listed inventory basis, estimated) that the ward cohort showed on the stay date in June–September.

In the base scenario (Jun–Sep average ¥20,704, full-year occupancy 80%), annual room revenue is ¥6.05m per room, or ¥1.72bn for 285 rooms. At the same 80% occupancy, using the opening-month ¥35,226 gives ¥10.29m — an overstatement of about 70% versus the Jun–Sep average. That gap is larger than the swing from moving occupancy between 70% and 90% (29% at the same ADR). In other words, the variance in a first-year plan is driven more by the ADR assumption than by the occupancy assumption, and not annualizing the high-rate period right after opening is the most effective adjustment to the assumptions.

The harshest combination in Table 8 (June level, 70% full-year occupancy) gives ¥5.07m per room, while the most optimistic basis — annualizing opening-month ADR at 90% occupancy — gives ¥11.57m, a spread of about 2.3x. The process of the price band settling within six months of opening coincided with the Tokyo city hotel segment falling −16.9% YoY in June–August. Whether September’s ¥22,258 is “the level after support kicked in” or “partway through a recovery from the summer trough” therefore needs to be confirmed with finalized months from October onward. In lending and investment underwriting, it is reasonable to use the base and downside rows as reference cases and keep the opening-month row for comparison only.

Summary

Six months after Hotel Metropolitan Oimachi Tracks opened, room stock within 1km of Oimachi Station stands at a nominal 3,064 rooms (+10.3%), with an effective net increase of +129 rooms after deducting the renovation closure. Shinagawa Ward’s estimated settled ADR was above the prior year in April–May, −8.4% in June–August (Tokyo overall −6.0%), and reversed to +1.9% in September, while ward occupancy (OTA-listed inventory basis, estimated) held at 89.5–94.0% on a monthly average in June–September. The new hotel entered a price band that does not overlap the existing one — ¥42,000–56,000 on Saturdays and ¥30,000–41,000 on weekdays — and since July has shifted to holding price while keeping inventory in the last-minute window. Hotels inside railway companies’ mixed-use developments in Tokyo have already delivered three projects and 702 rooms in 2025–2026, with a Shibuya project to follow in 2028. The key point from this article’s measurements for development decisions is to base assumptions on the price band confirmed six months in, not the opening month, and on year-to-year changes in the catchment’s effective supply.

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