How many hotel rooms sit around an international conference center or exhibition hall is a starting number both for organizers who book the venue and for developers hunting for a site next door. This article measures the room stock within a 1 km and 3 km radius of the main entrance of 14 major convention and exhibition venues across Japan on the same yardstick, and reconstructs ten years of change from 2017 to 2026. Combined, the 1 km rings around the 14 venues hold 177 properties and 25,001 rooms, up 7,128 rooms (+40%) from 112 properties and 17,873 rooms at the end of 2017. Most of that increase, however, is concentrated around a handful of venues such as Pacifico Yokohama, while the 1 km rings of the Kyoto International Conference Center and the Sapporo Convention Center look almost exactly as they did ten years ago. After separating cities where rooms have been stacked next to the venue from cities where delegates commute from downtown, we read the development headroom of venue-adjacent land from zoning, land prices, flood/inundation risk and daytime working population, and estimate the ADR a 100-room hotel would need.

The 1 km Rings of 14 Venues — 6,028 of 25,001 Rooms Cluster Around Pacifico Yokohama

We start with the results of measuring all 14 venues with the same 1 km circle. As of October 2026, Pacifico Yokohama has the most rooms within 1 km at 15 properties and 6,028 rooms, followed by the International Conference Center Hiroshima (65 properties, 4,549 rooms), Makuhari Messe (3,811 rooms) and Tokyo Big Sight (3,054 rooms). By contrast, the Kyoto International Conference Center has just two properties and 340 rooms — one adjacent 310-room hotel and the center’s own 30-room lodge — while the Sapporo Convention Center has 3 properties and 85 rooms and the Sendai International Center 3 properties and 165 rooms. Under the same “international conference center” label, on-the-doorstep room supply differs by more than 70x.

Over ten years the gap has actually widened. Pacifico Yokohama’s 1 km ring grew by 3,426 rooms from 8 properties and 2,602 rooms at end-2017, led by a 2,311-room large hotel that opened in front of Sakuragicho Station in 2019, with further openings of around 300 rooms each between 2022 and 2026. Ariake around Tokyo Big Sight rose from 1,942 to 3,054 rooms, and Makuhari Messe from 3,280 to 3,811 rooms. Meanwhile the 1 km ring of the Kyoto International Conference Center stands at the same 340 rooms as in 2017, the Sapporo Convention Center went from 82 to 85 rooms, and the Sendai International Center fell from 195 to 165 rooms — flat to slightly down as small properties closed. A comparison that widens the radius to 5 km for exhibition venues only and tracks the occupancy lift during shows is covered in 6 Japan Exhibition Venues: 87x Room Gap in 5km, Show Lift Max +5.8pt.

Yokohama needs one caveat. A 603-room large hotel in Minato Mirai has been closed for a full renovation since the end of March 2025 (reopening planned for FY2028) and is not included in the 6,028 rooms above. Because it was operating at end-2017 it is included in the 2017 figure, so adding it back would make Yokohama’s increase even larger. Conversely, in Ariake a 368-room property that closed in March 2024 reopened in December of the same year as a 363-room hotel, and it is counted as one property.

Venue-Adjacent vs Downtown-Commute — Makuhari Holds 87% of Its 3 km Rooms Within 1 km, Sendai and Sapporo 1%

Measured at two radii, 1 km and 3 km, the 14 venues fall into two clearly different groups. The first is the “venue-adjacent” type, where rooms are stacked next to the venue: at Makuhari Messe, 3,811 of the 4,376 rooms within 3 km (87%) lie within 1 km. This is because the Kaihin-Makuhari district itself was planned together with the venue; Tokyo Big Sight (47%) and INTEX Osaka, the Kobe International Exhibition Hall and G Messe Gunma (all 57%) fall into the same type. Pacifico Yokohama has a downtown-scale 17,919 rooms within 3 km and also 6,028 rooms within 1 km, making it the only venue that combines both adjacency and a downtown base.

The second is the “downtown-commute” type. The Sendai International Center has 12,763 rooms within 3 km but only 165 within 1 km, a ratio of 1%; the Sapporo Convention Center likewise has 85 rooms within 1 km against 5,690 within 3 km, also just 1%. The Fukuoka International Congress Center and Marine Messe Fukuoka have the largest 3 km stock of all 14 venues at 35,385 rooms, yet the waterfront venue’s 1 km ring holds only 36 properties and 829 rooms, or 2%. Toki Messe’s 1 km ring on Bandai Island has 478 rooms, 6% of the 7,361 rooms within 3 km on the Niigata Station side. In these cities organizers do not assume delegates will “stay next to the venue”; events are designed around commuting from downtown hotel clusters by subway, bus or shuttle.

The Kyoto International Conference Center has a ratio of 80%, but even its 3 km ring holds only 424 rooms, and delegates depend on the Kyoto Station and Shijo areas, 20 minutes away on the Karasuma subway line. As discussed below, the area around the center is mainly Category 1 Low-Rise Exclusive Residential zoning where hotels cannot be built, so it is structurally a downtown-commute venue. The International Conference Center Hiroshima stands in the Peace Memorial Park, i.e. downtown, so although it has 4,549 rooms within 1 km, these are only 28% of the 16,107 rooms within 3 km; it is classed as venue-adjacent but is better described as a “downtown-embedded” venue.

Rooms per Unit of Venue Capacity — 3,014 Rooms per 10,000 ㎡ in Yokohama, 265 at Big Sight

Absolute room counts ignore differences in venue size. We therefore took exhibition space and the capacity of the largest hall from each venue’s published materials and calculated two indices: “rooms within 1 km per 10,000 ㎡ of exhibition space” and “rooms within 1 km per 1,000 seats of largest-hall capacity”. On the exhibition index, Pacifico Yokohama has 6,028 rooms within 1 km against 20,000 ㎡ of exhibition hall space, or 3,014 rooms per 10,000 ㎡, and G Messe Gunma 1,526 rooms against 10,000 ㎡. By contrast, Tokyo Big Sight is Japan’s largest venue with 115,420 ㎡ of total exhibition space but has only 265 rooms per 10,000 ㎡; INTEX Osaka has 241 against about 70,000 ㎡ and Port Messe Nagoya 63 against 40,000 ㎡. Even allowing for the fact that most visitors to large trade shows are day-trippers or stay downtown, the option of staying next to the venue is structurally thin at exhibition-type venues.

The conference index shows the opposite picture. The International Conference Center Hiroshima has 4,549 rooms within 1 km against the 1,504-seat Phoenix Hall, or 3,025 rooms per 1,000 seats — the deepest of the 14 venues. Pacifico Yokohama also has 1,205 rooms per 1,000 seats against its 5,002-seat National Convention Hall. In contrast, the Kyoto International Conference Center has 185 rooms against its 1,840-seat Main Hall, the Sendai International Center 165 against its 1,000-person Main Hall, and the Sapporo Convention Center 17 against a total simultaneous capacity of 5,000. On a day a 1,000-delegate academic congress is held, the rooms available next to the venue — even at one person per room — cover just over 30% of attendees in Kyoto, just under 20% in Sendai and under 10% in Sapporo.

Overlaying international conference results reveals an inversion: venues with thin room stock host more conferences. In JNTO’s 2024 international conference statistics, Pacifico Yokohama ranked first by venue for the 22nd consecutive year with 64 conferences, followed by the Kyoto International Conference Center with 33 and Tsukuba International Congress Center with 28. By city, the order was Tokyo’s 23 wards 351, Kyoto 215, Fukuoka 131, Yokohama 103, Osaka 89, Nagoya 87 and Sendai 76. Kyoto, Fukuoka and Sendai are all downtown-commute venues with thin 1 km room stock, so conference demand is absorbed by downtown rooms. When gauging the development headroom of venue-adjacent land, these venues with “plenty of demand but nowhere to stay next door” are the candidates. Whether autumn room supply in regional cities where conference numbers have grown can absorb the demand is examined city by city in 491 Meetings, World No.6: 892 Rooms Left in Matsue, 834 in Nara.

Host-Ward Estimated Contracted ADR and Weekday Pricing — Venue-Adjacent Wards Show a Wide Weekday–Saturday Gap

Next, we look at the level of room rates in each venue’s host ward. The host-ward estimated contracted ADR (12-month average, October 2025 to September 2026) is highest in Nishi Ward, Yokohama (Pacifico Yokohama) at ¥20,200 (N=17), followed by Hakata Ward, Fukuoka at ¥14,500 (N=147), Koto City at ¥14,300 (N=41) and Mihama Ward, Chiba at ¥13,800 (N=12). Regional venues sit around ¥10,000: Takasaki ¥7,400 (N=31), Chuo Ward, Niigata ¥7,000 (N=44) and Naka Ward, Hiroshima ¥10,100 (N=61). Minato Ward, Nagoya and Shiroishi Ward, Sapporo (both N=2), Ginowan (N=5) and Suminoe Ward, Osaka (N=7) have few target properties and are reference values only.

To see how rates hold up on weekdays, when events concentrate, we compared selling prices at a lead time of 1 day for September 2026 stay dates, split into weekdays (Tuesday–Thursday) and Saturdays, using a cohort (properties listing at least 30% of their total rooms on major booking sites; the number of target properties varies by stay date). In Nishi Ward, Yokohama the average weekday selling price was about ¥26,100 and Saturday about ¥39,000, making Saturday 1.49x the weekday rate; Ginowan was 1.86x and Chuo Ward, Niigata 2.46x — the wards hosting venues depend on weekend leisure demand for their rates. By contrast, Chuo Ward, Sapporo, where downtown-commute delegates stay, was 0.92x with weekdays higher, while Nakamura Ward, Nagoya was 1.42x and Shimogyo Ward, Kyoto 1.49x. In Sapporo, September weekday demand is deep in both business and leisure, and prices reflect how downtown absorbs demand even though rooms next to the venue are thin. Estimated OCC for the same month was 84% on weekdays and 92% on Saturdays in Nishi Ward, Yokohama (10–11 properties, 2,284–2,878 rooms) and 93% and 94% in Aoba Ward, Sendai (36–41 properties, 5,518–6,291 rooms) — the downtown side fills up more on weekdays.

Site Assessment — Reading Venue-Adjacent Land Through Zoning, Land Prices, Inundation Risk and Working Population

Whether a hotel can be built next to a venue is decided first by zoning. Querying the zoning data of the Real Estate Information Library at each venue point shows that Tokyo Big Sight sits in an Exclusive Industrial zone (FAR 200%) where hotels cannot be built, so a hotel would have to move out to the surrounding Quasi-Industrial zones (300%). The Kyoto International Conference Center adjoins the Takaragaike city-planning park, and the zoning polygons in its 1 km ring are mainly Category 1 Low-Rise Exclusive Residential (FAR 60%), where a new hotel is not legally feasible either. At Pacifico Yokohama (Commercial 400%), the Kobe International Exhibition Hall (Commercial 600%), Port Messe Nagoya (Commercial 400%) and Makuhari Messe (Neighborhood Commercial 400%), commercial zoning spreads out from the venue point, leaving room for adjacent development in terms of floor area. The International Conference Center Hiroshima, the Sendai International Center and G Messe Gunma are in Category 2 Residential zones (200%) where hotels are allowed but the permitted floor area is small; in Hiroshima the realistic option is to move to the commercial blocks 0.5 km away zoned 400–900%.

Looking at 2026 official land price benchmark sites within the 1 km rings, Minato Mirai 3-chome is ¥3.75M/㎡ (+10.0% YoY), Naraya-machi in Fukuoka ¥1.13M–¥1.71M/㎡ (+14.0–14.7%) and commercial land in Otemachi and Nakamachi, Hiroshima ¥628k–¥2.46M/㎡ (+5.0–5.6%) — the top downtown-embedded and venue-adjacent locations are in a rising land-price phase. Conversely, Higashi-Irifunecho near Toki Messe is ¥71k/㎡ (±0% YoY), Iwaoshimachi near G Messe Gunma ¥134k/㎡ (+3.9%), Minatojima 3-chome on Kobe’s Port Island ¥185k/㎡ (+15.6%) and Mashiki in Ginowan ¥186k/㎡ (+6.9%): the land-price burden is small at regional and reclaimed-land venues.

For the nine waterfront venues, we queried the library’s storm surge, tsunami and flood inundation scenarios using zoom-level 14 tiles. The venue point falls inside a storm-surge inundation zone at Makuhari Messe (0.5 m to under 1 m) and at the Fukuoka International Congress Center / Marine Messe Fukuoka (3 m to under 5 m); the Okinawa Convention Center’s venue point is in a tsunami zone of 2 m to under 5 m and Toki Messe’s in a tsunami zone of 0.01 m to under 0.3 m. At Pacifico Yokohama, Tokyo Big Sight, INTEX Osaka, Kobe and Port Messe Nagoya, the venue point itself is outside the zones, but storm-surge zones exist within the 1 km ring, and in Yokohama and Makuhari bands of 5 m to under 10 m tsunami inundation also lie within 1 km. A hotel planned on venue-adjacent land must treat ground-floor use and BCP as design premises — a condition that rarely shows up in the price of the land.

Working population indicates the depth of weekday demand. Aggregating the Economic Census (by town block) within a 1 km radius gives 98,617 workers and a 39.7% office-type share around Pacifico Yokohama, 72,110 and 26.7% around the International Conference Center Hiroshima and 47,638 and 37.4% around Makuhari Messe — business travel demand can be expected even on weekdays without events. By contrast, there are 2,751 workers around the Kyoto International Conference Center, 2,871 around Port Messe Nagoya (1.3% office-type) and 4,789 around the Okinawa Convention Center, so business demand to fill non-event weekdays depends almost entirely on the venue.

Required ADR for a 100-Room Hotel Next to the Venue — Construction Costs Matter More Than Land

We combine the conditions so far into a single estimate. Assuming a 100-room limited-service hotel with 25 ㎡ rooms on venue-adjacent land and a guestroom ratio of 65%, the gross floor area is 3,846 ㎡ (about 1,163 tsubo). Construction cost is ¥2.80bn using the 2025 steel-frame unit cost of ¥2.405M per tsubo based on MLIT building construction statistics (as compiled by archi-book, 2025 edition). This is Stage 1. For Stage 2, assuming construction starts in 2028 and opening in 2029, we raised construction cost to ¥3.23bn (+15.5%) by compounding the Japan construction cost escalation published by Turner & Townsend (+5.3% in 2026, +5.0% in 2027) with +4.5% for 2028 as this article’s own assumption. Land cost is the site area back-calculated from floor area using the FAR at or near the venue point, multiplied by the official land price within the 1 km ring. FF&E, design and supervision are set at 15% of construction cost, the required yield at 5.5% GOP on total investment, the GOP margin at 35% (the midpoint of the general industry guide of around 30–40% cited in a Relo Hotel Solutions column) and full-year OCC at 80%.

The results are shown in the table. Land alone next to Pacifico Yokohama costs ¥3.61bn, and the Stage 2 required ADR reaches ¥39,400 — 1.95x the host ward’s estimated contracted ADR of ¥20,200. A limited-service hotel does not pencil out; mixed use, with luxury rooms on the upper floors and retail or residential on the lower floors, becomes a prerequisite. Makuhari Messe requires ¥23,600 against the host ward’s ¥13,800 (1.7x) and Fukuoka ¥24,700 against ¥14,500 (1.7x): even at venue-adjacent sites in Greater Tokyo and Fukuoka, a new limited-service hotel needs a higher rate.

At regional venues with cheap land, the picture changes. Land next to G Messe Gunma costs only ¥260M, but construction cost of ¥3.23bn accounts for 80% of total investment, so the required ADR is ¥21,400 — 2.9x Takasaki’s ¥7,400. At Toki Messe, land is ¥140M while the required ADR is ¥20,700, 3.0x Chuo Ward, Niigata’s ¥7,000. In other words, what constrains adjacent development at regional venues is not land prices but construction costs, which apply uniformly nationwide, and thin demand to fill non-event weekdays. Port Messe Nagoya, the only venue where the multiple stays at 1.2x, rests on a reference ADR for Minato Ward, Nagoya based on a thin sample of N=2 and cannot be taken at face value.

How sensitive is this required ADR to the assumptions? Holding Stage 2 total investment fixed, Table 5-2 shows three scenarios that move full-year OCC, GOP margin and required yield (GOP on total investment) together. Optimistic is full-year OCC 85%, GOP margin 40% and yield 5.0%; Base is the assumption in the text (full-year OCC 80%, GOP margin 35%, 5.5%); Pessimistic is full-year OCC 75%, GOP margin 30% and 6.0%. Even in the most favorable optimistic case, Pacifico Yokohama requires ¥29,500, 1.46x its host ward, and Makuhari Messe ¥17,700, 1.28x. Excluding Minato Ward, Nagoya (Port Messe Nagoya, 0.89x), whose host-ward ADR is a reference value with N=2, the required ADR exceeds the host ward’s estimated contracted ADR at all 12 remaining venues even under the optimistic case (1.16–2.22x). Under the pessimistic case the range widens to 1.61–4.02x. Even when the assumptions are tilted optimistic, the conclusion that “a new limited-service hotel next to the venue does not work at the host ward’s standard rate” holds; the gap must be closed by a rate premium or by compressing the initial investment.

Moving two assumptions on a grid makes clear which variable matters. Table 5-3 shows the required ADR for land next to Makuhari Messe (Stage 2 total investment ¥4.39bn, GOP margin fixed at 35%) with full-year OCC varied from 70% to 90% and the required yield from 4.5% to 6.5% in five steps. The grid ranges from ¥17,200 to ¥31,900, or 1.24–2.31x the host ward’s estimated contracted ADR of ¥13,824. Even in the most favorable corner — full-year OCC 90% and yield 4.5% — the required ADR is 1.24x the current level, so measures that raise occupancy alone cannot close the gap. From the base case, lowering the required yield by 1 point (about ¥4,300) has a larger effect than raising full-year OCC by 10 points (about ¥2,600); measures that lower the cost of capital or initial investment, such as fixed-term land leases or low-cost leasing of public land, work better than adding occupancy.

Venue-Side Plans and Closures — Listing Only What Primary Sources Confirm

When reading supply around a venue, the venue’s own renovation and new-build schedule sets the timeline of demand. Within what we could confirm, Pacifico Yokohama’s National Convention Hall will close for renovation from May 2027; the Kanagawa Shimbun gives the reopening as March 2028 and Yokohama City Council materials as May 2028 (Reiwa 10). The Sendai International Center’s Conference Building has been closed for major renovation since April 20, 2025, and its official website gives no reopening date. On October 6, 2026, Sapporo City published a draft basic plan for a new MICE facility around Nakajima Park, with construction expected to start in FY2031, opening in FY2033 and a project cost of ¥59.7bn. Rather than attracting hotels next to its venue, Sapporo has chosen to move the venue to downtown, where the hotels are. Okinawa Prefecture’s large MICE facility in the Marine Town district failed to attract bidders in its FY2024 tender, and the prefecture plans to revise the basic plan so that public facilities are developed first.

On the hotel side, a mixed-use development including 1,000 rooms at Hibino 1-chome in front of Kaihin-Makuhari Station (scheduled completion December 2027) can be identified from building-confirmation applications in the Building Construction Dynamics Survey; rooms within 1 km of Makuhari Messe are expected to jump from 3,811 to about 4,800 (the content of this development and its absorption capacity are analyzed in detail in Kaihin-Makuhari 1,000-Room ¥30bn Mixed-Use: Breakeven ADR ¥13,200). In Yokohama, 338 rooms in Minato Mirai 6-chome and 272 rooms in Kitanakadori 6-chome, about 1–1.3 km from the venue, are scheduled for completion in 2026–2027; together with the FY2028 reopening of the closed 603-room hotel, more than 1,200 rooms will return to or join the Minato Mirai area heading into 2029. Note that the count based on confirmation applications is the lower bound of the confirmed pipeline identifiable at the time of research and will grow as further applications are filed.

Conclusion — Implications for Site Seekers, Municipalities Attracting Hotels, and Owners of Venue-Adjacent Hotels

Summing up the results of measuring 14 venues with the same 1 km circle in a single sentence: rooms are stacked according to the structure of the city, not the size of the venue. Where the venue and the district were planned together — Minato Mirai, Kaihin-Makuhari, Ariake — rooms line up next door, while in cities that placed their venue on the edge of the built-up area, such as Kyoto, Sendai and Sapporo, rooms have stayed downtown. Sapporo’s decision to build a new venue downtown can be read as a choice premised on this structure. Whether to add hotels next to the venue or to invest in the links between downtown and the venue — a MICE city’s choice starts with an accurate count of the rooms at its doorstep.