Japan
Derived only from currently loaded listing rows. Includes 19 sourced manual research rows, 0 synthetic rows, and 0 certified comparable priced real-estate rows.
Certified rows only
No certified asset-type cohort yetAsset-type evidence
No certified comparable priced rows by asset type yet. Current evidence can still be useful, but it should not read as a priced asset-type cohort.
Diligence cues
Transfer / Legal Friction
Blockers, row notes, and dataset-scope cautions from the loaded evidence only.
Row-level jurisdiction notes
- Miyota Heiwadai land with concrete underground roomLand sale with old house and underground room under parking; source says buyer must verify structure and strength
- Urasoe Kyozuka RC shop residence with basement shelter useActive sale store and residence with basement use language; buyer must verify whether the basement has any shelter hardening or legal use constraints
- WNI Last Fortress O2 indoor nuclear shelter productProduct-market source; indoor shelter and oxygen-capsule variant rather than real-estate listing
- Ota Nishiminecho house with underground shelter-style storageActive leasehold house listing with old leasehold term and possible renewal fees so buyer should verify lease renewal basement condition shelter-style wording and any redevelopment limits
- Shinjuku Kashiwagi basement maisonette with underground shelter wordingBrowser-visible basement-level condominium listing with shelter marketing language but local source-health returns HTTP 403 so buyer should verify whether any dedicated shelter exists beyond the basement maisonette and shared condominium rights
- Timeless Court Izu villa suite with 15 m2 basement shelterResort villa sale with post-sale management contract and basement shelter use; buyer should verify ownership form management obligations shelter build standard and whether the basement has any separate legal value
- Aomori Nonai surface shelter former telephone RC buildingOwner-marketed direct sale listing for a small RC former telephone-facility building; buyer should verify land title building registration structural suitability utilities and whether shelter wording is marketing language rather than legal civil-defense designation
- Akishima Tamagawacho RC building with basement shelter planRenovated mixed-use RC building marketed by a design and real-estate group; buyer should verify current listing status title zoning basement shelter specification utilities permits and whether any shelter value is separable from the full building sale
Dataset scope flags
- Broader-property contamination12 loaded rows price the broader property rather than a separated shelter value.
- Transfer scope ambiguity13 loaded rows carry lease, usage-right, broader-property, non-transferable, or unknown transferability classes.
- Public-use or readiness context13 loaded rows sit in civil-defense, public-disposal, or liability-transfer lanes.
- Planning or condition diligence1 row-level jurisdiction note mention planning, protected status, obligations, contamination, or similar reuse friction.
Listing distribution
19 sourced rows, 0 synthetic rows. Median values use only certified comparable source-backed real-estate rows with direct or converted underground area, defensible asking, sale, or auction prices, and acceptable current source health.
13 active sourced rows, 4 priced sourced USD/m² rows,0 comparable priced real-estate rows, and 4 priced rows excluded from the comparable cohort.
- Mixed Underground Asset
- Civil Defense Shelter
- Hardened Facility
Source coverage
- Japan manual research queue manual only
- Japan shelter product manual review manual only
- Japan IPROS shelter product review manual only
- Japan Forest Seed underground room broker review manual only
- Japan Uchina Life basement shelter-use marketplace review manual only
- Japan World Protect WNI O2 shelter product review manual only
- Japan SUUMO shelter keyword review manual only
- Japan LIFULL HOME'S basement shelter wording review manual only
- Japan LIFULL HOME'S Akiya Bank air-raid shelter review manual only
- Japan Timeless Court Izu basement shelter review manual only
- Japan Ieichiba surface shelter property review manual only
- Japan Minoda Akishima basement shelter review manual only
- Japan akiya and broker air-raid shelter property review manual only
- Japan Smile Home air-raid shelter land review manual only
- Japan Okinawa Beach air-raid shelter land review manual only
Market value signal
not comparable. no transferable real-estate cohort yet for this country; the country median across mixed lanes is n/a* against a global comparable median of $1,382.
- No global Embedded shelter median is available.
Data gaps
19 rows with price, 0 without price. 4 rows with underground area, 15 without underground area.
Research log: 19 included, 31 excluded, and 13 pending decisions for this country.
- 15 evidence rows are missing stated underground area.
- 4 priced sourced rows are excluded from real-estate value cohorts by certification status, source health, scope, area basis, or price basis.
- No certified comparable priced real-estate rows; country market value is not scored.
- 3 evidence rows have blocked, paywalled, unreachable, or unknown source health.
Evidence mix
- Coverage
- Active Listing 13 / Broker Page 6
- Sources
- Marketplace 12 / Broker 6 / News Article 1
- Health
- Live 16 / Blocked 3
The lane is the kind of buying, not whether you can buy. Most rows below are real listings or evidence; the badge tells you what type of transaction the row represents.
- Transferable REStandard real estate. Clean title, transferable like any house.
- Shelter built into a broader property. You buy the property, the shelter comes with it.
- ProductVendor product or installation contract — pre-fab unit, retrofit, or service.
Japan listings
Synthetic rows are for product development only| Asset | Region | Market Type | USD/m² | Quality | Value | Status | Evidence |
|---|---|---|---|---|---|---|---|
| Miyota Heiwadai land with concrete underground room | Nagano | Price covers broader property — not a separable underground transfer | — | 0 | insufficient data | manual researchactiveactive listingliverejectedhighinsufficient datamissing underground area | Forest Seed listing states JPY 9m for Miyota Heiwadai land with old 84.46 m2 1975 house on 281.43 m2 land and a concrete underground room under the parking area that might be used as an emergency underground shelter after buyer structural checks Live source / Partial evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Land sale with old house and underground room under parking; source says buyer must verify structure and strength Forest Seed |
| Urasoe Kyozuka RC shop residence with basement shelter use | Okinawa | Price covers broader property — not a separable underground transfer | — | 25 | insufficient data | manual researchactiveactive listingliverejectedhighinsufficient datamissing underground area | Uchina Life listing states JPY 200m for a Urasoe Kyozuka 294.7 m2 RC shop residence on 458.22 m2 land with one ground floor and one basement floor and says it can be used as an underground shelter Live source / Partial evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Active sale store and residence with basement use language; buyer must verify whether the basement has any shelter hardening or legal use constraints Uchina Life |
| WNI Last Fortress O2 indoor nuclear shelter product | Ibaraki | Product | — | 45 | insufficient data | manual researchactivebroker pageliverejectedhighinsufficient datamissing underground area | World Protect WNI O2 page states WNI Last Fortress O2 indoor CBRNE shelter prices from JPY 8.58m to JPY 14.08m with F1 to G4 sizes 580-ton seismic strength and CBRN filtration Live source / Partial evidence / Brochure Evidence Only / Asking Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2, area_basis. Product-market source; indoor shelter and oxygen-capsule variant rather than real-estate listing World Protect |
| Ota Nishiminecho house with underground shelter-style storage | Tokyo | Price covers broader property — not a separable underground transfer | — | 11 | not comparable | manual researchactiveactive listingliverejectedhighnot comparable | SUUMO page states JPY 68000000 for Ota Nishiminecho house 150.21 m2 building 89.34 m2 land 1992 build with 地下シェルター風倉庫 wording and building area including 地下室8.2m2 plus 地下車庫28.9m2 Live source / Partial evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Active leasehold house listing with old leasehold term and possible renewal fees so buyer should verify lease renewal basement condition shelter-style wording and any redevelopment limits SUUMO / White Homes |
| Shinjuku Kashiwagi basement maisonette with underground shelter wording | Tokyo | Price covers broader property — not a separable underground transfer | — | 22 | insufficient data | manual researchactiveactive listingblockedrejectedmediuminsufficient datamissing underground area | LIFULL HOMES page states JPY 134980000 for Crescent Shinjuku Kashiwagi basement first-floor 3LDK apartment with 100.57 m2 wall area and points text describing a 100m2 class 地下シェルター付メゾネット Blocked source / Weak evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Browser-visible basement-level condominium listing with shelter marketing language but local source-health returns HTTP 403 so buyer should verify whether any dedicated shelter exists beyond the basement maisonette and shared condominium rights LIFULL HOME'S / Toho House Suginami |
| Timeless Court Izu villa suite with 15 m2 basement shelter | Shizuoka | Price covers broader property — not a separable underground transfer | — | 22 | not comparable | manual researchactiveactive listingliverejectedhighnot comparable | Timeless Court Izu page states JPY 198000000 for an 85 m2 Junior Suite villa and says each room has a 15 m2 basement that can be customized and used as an underground shelter for emergency evacuation and staying Live source / Supported evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Resort villa sale with post-sale management contract and basement shelter use; buyer should verify ownership form management obligations shelter build standard and whether the basement has any separate legal value Timeless Court Izu |
| Aomori Nonai surface shelter former telephone RC building | Aomori | Transferable RE | n/a | 22 | insufficient data | manual researchactiveactive listingliverejectedhighinsufficient datamissing underground area | Ieichiba direct listing states JPY 800000 asking price for an Aomori Nonai old-land parcel with about 33 tsubo land and an about 10 m2 reinforced-concrete former telephone-facility building marketed as a surface shelter and usable as a secret room valuables storage or missile-evacuation space Live source / Partial evidence / Whole Property / Asking Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Owner-marketed direct sale listing for a small RC former telephone-facility building; buyer should verify land title building registration structural suitability utilities and whether shelter wording is marketing language rather than legal civil-defense designation Ieichiba |
| Akishima Tamagawacho RC building with basement shelter plan | Tokyo | Price covers broader property — not a separable underground transfer | — | 30 | not comparable | manual researchactiveactive listingliverejectedhighnot comparable | Minoda Kenchiku / LIFA Tachikawa project page states the Akishima Tamagawacho RC basement plus four-floor converted building is for sale for JPY 155000000 with 449.89 m2 total area and 86.90 m2 basement; the basement is described as usable as an underground shelter and emergency stockroom and about 6 m below ground Live source / Partial evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Renovated mixed-use RC building marketed by a design and real-estate group; buyer should verify current listing status title zoning basement shelter specification utilities permits and whether any shelter value is separable from the full building sale Minoda Kenchiku Design / LIFA Tachikawa |
| Natori Natorigaoka detached study with underground room | Miyagi | Price covers broader property — not a separable underground transfer | — | 11 | not comparable | manual researchactiveactive listingliverejectedhighnot comparable | Ieichiba page states 希望価格 2,000万円 for 宮城県名取市名取が丘 old house parcel with 土地 770.41㎡, 建物 1F 56.90㎡, 2F 24.60㎡, 増築1F 64.96㎡, 離れ1F 11.28㎡, 地下 約6㎡ and says the 地下室の広さ is 3畳ほど and could be used as a シェルター or music room Live source / Supported evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Owner-posted old-house parcel with unregistered detached study and basement; buyer should verify title registration condition access utilities and whether shelter wording is only suggested future use Ieichiba |
| Uki Tobase akiya with rear air-raid shelter | Kumamoto | Price covers broader property — not a separable underground transfer | — | 13 | insufficient data | manual researchactiveactive listingliverejectedhighinsufficient datamissing underground area | Kumamoto Akiya 360 states JPY 3900000 for a Uki Misumi Tobase house with 83.3 m2 building area 268.92 m2 land and a rear air-raid shelter that can hold about ten people Live source / Partial evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Active akiya-bank house listing with rear air-raid-shelter cave and capacity wording so buyer should verify title access structural condition depth and separate shelter area Kumamoto Akiya 360 / Uki City Akiya Bank |
| Saga Kankuji land with air-raid shelter location unknown | Kyoto | Price covers broader property — not a separable underground transfer | — | 13 | insufficient data | manual researchactiveactive listingliverejectedhighinsufficient datamissing underground area | SMTRC page updated 2026-05-11 states JPY 320000000 for Kyoto Ukyo Saga Kankuji Meisui-cho land with 1705.75 m2 land area old house and remarks that a well shrine and air-raid shelter of unknown location are on site Live source / Weak evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Active land listing with old house and air-raid shelter location unknown so buyer should verify existence location collapse risk title and remediation obligations Sumitomo Mitsui Trust Realty |
| Chiba Wakamatsu land with old air-raid shelter trace | Chiba | Price covers broader property — not a separable underground transfer | — | 15 | insufficient data | manual researchactiveactive listingliverejectedhighinsufficient datamissing underground area | Smile Home page states 千葉市若葉区若松町790 10 500万円 6 955.00 m2 備考 北側付近 旧防空壕跡 Live source / Supported evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Active broker land listing with an old air-raid-shelter trace near the north side so buyer should verify exact shelter location condition safety title remediation duties and whether any value is separable Smile Home |
| Karatsu Juuninmachi akiya with adjacent owner-unknown air-raid shelter | Saga | Price covers broader property — not a separable underground transfer | — | 13 | insufficient data | manual researchactiveactive listingblockedrejectedmediuminsufficient datamissing underground area | LIFULL HOMES Akiya Bank page states JPY 7500000 for Karatsu City Akiya Bank 309 in Juuninmachi with 83.46 m2 wooden house 192.57 m2 land and an owner-unknown air-raid shelter on adjacent land whose entrance is within the site and use is not allowed Blocked source / Weak evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Active akiya-bank row managed by a municipality or delegated entity; adjacent shelter ownership is unknown and the entrance is on the site but use is not allowed so buyer should verify title access hazard and remediation obligations LIFULL HOME'S Akiya Bank |
| Higashi Kawata land with small air-raid shelter trace | Okinawa | Price covers broader property — not a separable underground transfer | — | 13 | insufficient data | manual researchactiveactive listingliverejectedhighinsufficient datamissing underground area | Okinawa Beach Real Estate page states JPY 15000000 for Higashi Kawata 1479.99 tsubo land with 4893 m2 land area and notes a small air-raid-shelter trace remains on the steep western side; page also states an old 67.98 m2 RC one-story structure built in 1960 and landslide red-zone context Live source / Partial evidence / Underground Component / Broader Property Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2. Active broker land listing with old RC structure and small air-raid-shelter trace; buyer should verify exact shelter location title condition collapse risk red-zone constraints remediation duties and whether any value is separable Okinawa Beach Real Estate |
| WNI Last Fortress indoor nuclear shelter | Ibaraki | Product | — | 45 | insufficient data | manual researchactivebroker pageliverejectedhighinsufficient datamissing underground area | Product page lists WNI indoor nuclear shelter prices from JPY 7.48m to JPY 12.98m with CBRN filter support and multiple occupant sizes Live source / Partial evidence / Brochure Evidence Only / Asking Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2, area_basis. Product-market source; installed indoor shelter rather than real-estate listing World Protect |
| HANARE buried nuclear shelter product line | National | Product | — | 45 | insufficient data | manual researchactivebroker pageliverejectedhighinsufficient datamissing underground area | Product page states a buried underground nuclear or missile-compatible shelter product line for home grounds starting around JPY 28m Live source / Supported evidence / Brochure Evidence Only / Asking Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2, area_basis. Product-market source; site-specific permitting and installation costs not captured HANARE |
| PHOENIX four-person underground nuclear shelter kit | Tokyo | — | 63 | insufficient data | manual researchactivebroker pageblockedrejectedhighinsufficient datamissing underground area | Article states American Resort Home launched the PHOENIX underground nuclear shelter kit for JPY 9.7m with filtration toilet bath kitchen generator emergency hatch and four-person capacity Blocked source / Weak evidence / Brochure Evidence Only / Asking Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2, area_basis. Product-market kit source; excavation site and installation costs are not captured Shinken Housing | |
| CRISIS-01 residential nuclear shelter | National | Product | — | 59 | insufficient data | manual researchactivebroker pageliverejectedhighinsufficient datamissing underground area | Product page states CRISIS-01 starts at JPY 9.8m before tax with an Israeli special filter lead-lined walls shock-resistant door and about two to three month lead time Live source / Weak evidence / Brochure Evidence Only / Asking Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2, area_basis. Product-market source; above-ground placement and site costs differ from buried bunker property rows IPROS |
| AEGIS multipurpose disaster and nuclear shelter | National | Product | — | 45 | insufficient data | manual researchactivebroker pageliverejectedhighinsufficient datamissing underground area | Product page states AEGIS is sold nationwide with above-ground or buried variants and price information from JPY 20m with a JPY 10m to JPY 50m range Live source / Partial evidence / Brochure Evidence Only / Asking Price Rejected: Rejected: row is outside the comparable real-estate cohort by scope, area basis, price basis, or priced USD/m2 support. Missing required evidence fields: area_underground_m2, area_basis. Product-market source; underground nuclear use depends on air purifier and valve configuration IPROS |