Methodology v2 · shadow engine

Price positions

Each priced, certified listing is graded only against its own protection tier and transaction lane — a granite mountain facility is never compared to a basement shelter. Grades are descriptive price positions against the cohort's evidence, not appraisals and not investment advice (USPAP AO-18).

How to read this page

Cohort references are cluster medians (one vote per source-and-country family), leave-one-out per row, with no external priors applied yet (unanchored launch — see the methodology). Rows marked operator-held belong to the site operator: they are graded against evidence they do not influence, and are disclosed rather than hidden. Asking-basis prices are labeled; auction minimums are excluded from all statistics. Time-adjustment of older evidence is not yet applied.

PT3 — Purpose-built standalone · Public disposal

Reference $344/m² (IQR $91–$508) · 19 rows / 9 source clusters · indicative (n_eff 8–19)

#	Asset	Country	USD/m²	vs reference	Position
1/19	Budapest I Krisztina korut 47 m2 shelter disposal	Hungary	$3 (sale price)	0.01×	▼ 1% of the typical price
2/19	Budapest I Miko utca 111 m2 shelter disposal	Hungary	$3 (sale price)	0.01×	▼ 1% of the typical price
3/19	Aalborg Molleparken civil-defense bunker disposal	Denmark	$4 (asking)	0.01×	▼ 1% of the typical price
4/19	Budapest IX Gyali ut 81 m2 shelter disposal	Hungary	$11 (sale price)	0.03×	▼ 3% of the typical price
5/19	Budapest I Hattyu utca 92 m2 shelter disposal	Hungary	$15 (sale price)	0.04×	▼ 4% of the typical price
6/19	Budapest I Attila ut 101 60 m2 shelter disposal	Hungary	$15 (sale price)	0.04×	▼ 4% of the typical price
7/19	Petajavesi Asematie former municipal command-center shelter	Finland	$54 (asking)	0.13×	▼ 13% of the typical price
8/19	Odense Sejerskovvej Region IV bunker sale	Denmark	$91 (sale price)	0.26×	▼ ~26% of the typical price
9/19	Kolding Vonsildvej regional bunker municipal sale	Denmark	$151 (sale price)	0.44×	▼ ~44% of the typical price
10/19	Budapest III Lajos utca 93 m2 shelter disposal	Hungary	$153 (sale price)	0.44×	▼ ~44% of the typical price
11/19	Budapest XI Szabolcska Mihaly 65 m2 shelter disposal	Hungary	$169 (sale price)	0.49×	▼ ~49% of the typical price
12/19	Paganico Grosseto WWII rifugio antiaereo Demanio disposal	Italy	$240 (asking)	0.58×	▼ ~58% of the typical price
13/19	Budapest III Becsi ut 293B 46 m2 shelter disposal	Hungary	$209 (sale price)	0.61×	▼ ~61% of the typical price
14/19	Waltrop Dortmunder Strasse Ostring high bunker	Germany	$344 (sale price)	1.00×	≈ typical price for its kind
15/19	Brislington Grade II war room and bunker	United Kingdom	$494 (sale price)	1.72×	▲ ~1.7× the typical price
16/19	Koeln Mauenheim Gruener Hof high bunker	Germany	$508 (sale price)	1.77×	▲ ~1.8× the typical price
17/19	Budapest III San Marco 45 m2 basement shelter disposal	Hungary	$645 (sale price)	1.88×	▲ ~1.9× the typical price
18/19	Gyongyos extreme atombunker commercial property	Hungary	$1,760 (asking)	6.13×	▲ 6.1× the typical price
19/19	Hattem Zwolle Noord river kazemat bunker	Netherlands	$2,151 (asking)	7.49×	▲ 7.5× the typical price

PT4 — Geological / strategic · Public disposal

Reference $269/m² · 5 rows / 5 source clusters · thin (n_eff 5–7)

#	Asset	Country	USD/m²	vs reference	Position
1/5	Boltigen Chlusalp armasuisse ammunition cavern four chambers 1400 m2	Switzerland	$124 (asking)	0.46×	▼ 46% of the typical price
2/5	Olavsvern Tromso naval fjellanlegg base 25000 m2 archived sale	Norway	$149 (sale price)	0.55×	▼ ~55% of the typical price
3/5	Kilemoen Ringerike civil-defense command fjellhall	Norway	$269 (asking)	1.33×	▲ ~1.3× the typical price
4/5	Jenseberget Nitelva former defense fjell facility	Norway	$273 (sale price)	1.36×	▲ ~1.4× the typical price
5/5	Rovaniemi Toramolampi Defence Forces equipment cave over 600 m2 realized online auction	Finland	$1,262 (auction bid)	6.30×	▲ 6.3× the typical price

PT1 — Shelter components · Transferable real estate

Reference $2,708/m² (IQR $1,716–$5,909) · 69 rows / 22 source clusters · established (n_eff ≥ 20)

#	Asset	Country	USD/m²	vs reference	Position
1/69	Idlib Wadi al-Nasim 280 m2 basement with large shelter	Syria	$111 (asking)	0.04×	▼ 4% of the typical price
2/69	846 Gough Street Coober Pedy dugout	Australia	$169 (sale price)	0.06×	▼ 6% of the typical price
3/69	Lot 123 Ante Street Coober Pedy two dugouts	Australia	$406 (sale price)	0.15×	▼ 15% of the typical price
4/69	985 Linsky Close Coober Pedy dugout	Australia	$440 (asking)	0.16×	▼ 16% of the typical price
5/69	Njurundabommen Silovagen 140 m2 rock-room sandsilo	Sweden	$555 (asking)	0.20×	▼ 20% of the typical price
6/69	Johannesburg earth connected mountain house	South Africa	$671 (asking)	0.25×	▼ 25% of the typical price
7/69	Bloomfield US Highway 231 berm home	United States	$679 (sale price)	0.25×	▼ 25% of the typical price
8/69	Midland County mostly underground retreat	United States	$736 (asking)	0.27×	▼ 27% of the typical price
9/69	Stockton Mathilda Drive berm home	United States	$1,008 (asking)	0.37×	▼ ~37% of the typical price
10/69	Lot 100 Kami Road Coober Pedy dugout	Australia	$1,076 (asking)	0.40×	▼ 40% of the typical price
11/69	Payson North 400th earth-berm home	United States	$1,081 (asking)	0.40×	▼ 40% of the typical price
12/69	Houston Barite Road modified earth berm home	United States	$1,164 (asking)	0.43×	▼ 43% of the typical price
13/69	Springfield waterfront earth home	United States	$1,233 (sale price)	0.46×	▼ 46% of the typical price
14/69	Porum South 4300 Road earth sheltered home	United States	$1,376 (asking)	0.51×	▼ 51% of the typical price
15/69	Topeka Meriden Road berm home	United States	$1,382 (asking)	0.51×	▼ 51% of the typical price
16/69	Dublin Earth Friendly earth-sheltered home	United States	$1,413 (sale price)	0.52×	▼ 52% of the typical price
17/69	Greenwood Runnymeade earth-sheltered home	United States	$1,457 (sale price)	0.54×	▼ 54% of the typical price
18/69	Rolla Fox Creek earth berm home	United States	$1,478 (asking)	0.55×	▼ 55% of the typical price
19/69	Fulton West 7th earth-sheltered home	United States	$1,494 (asking)	0.55×	▼ 55% of the typical price
20/69	Maple Hill earth-contact sheltered berm home	United States	$1,622 (asking)	0.60×	▼ ~60% of the typical price
21/69	Winterbach garden plot with underground bunker	Germany	$1,680 (asking)	0.62×	▼ ~62% of the typical price
22/69	Houston Highway AU earth berm home	United States	$1,707 (asking)	0.63×	▼ ~63% of the typical price
23/69	Rolla Private Drive earth berm home	United States	$1,736 (asking)	0.64×	▼ ~64% of the typical price
24/69	Lumby Balsam Lane partially underground earth home	Canada	$1,804 (asking)	0.66×	▼ ~66% of the typical price
25/69	Agia Galini Crete earth-sheltered eco house	Greece	$1,833 (asking)	0.67×	▼ ~67% of the typical price
26/69	Cherbourg en Cotentin converted blockhaus home	France	$1,920 (asking)	0.70×	▼ ~70% of the typical price
27/69	Carrollton Whooping Creek earth-sheltered home	United States	$1,927 (asking)	0.71×	▼ ~71% of the typical price
28/69	Whitesville Oklahoma Laffoon Road berm home	United States	$1,935 (sale price)	0.71×	▼ ~71% of the typical price
29/69	Leicester Stonegate earth-sheltered home	United States	$2,013 (sale price)	0.74×	▼ ~74% of the typical price
30/69	Chadwick Barber Road earth-berm home	United States	$2,034 (asking)	0.75×	▼ ~75% of the typical price
31/69	Rockingham Poole Road underground earth-shelter home	United States	$2,054 (asking)	0.76×	▼ ~76% of the typical price
32/69	Linden Tennessee earth-sheltered home with safe room	United States	$2,070 (sale price)	0.76×	▼ ~76% of the typical price
33/69	Rockvale Oak Creek ranch earth berm home	United States	$2,220 (asking)	0.82×	▼ 82% of the typical price
34/69	Muscotah Highway 159 earth sheltered home	United States	$2,261 (asking)	0.83×	▼ 83% of the typical price
35/69	Conover Buckatabon Road earth berm home	United States	$2,318 (asking)	0.86×	≈ typical price for its kind
36/69	Mountain Grove underground prepper bunker	United States	$2,454 (asking)	0.91×	≈ typical price for its kind
37/69	Weatherford Meadowview Road earth-berm home	United States	$2,523 (asking)	0.93×	≈ typical price for its kind
38/69	Vernal single-level earth berm home	United States	$2,641 (asking)	0.98×	≈ typical price for its kind
39/69	Sparta Johnson Road remodeled earth-berm home	United States	$2,657 (asking)	0.98×	≈ typical price for its kind
40/69	Bethel Springs Hobbit Bunker Estate underground home	United States	$2,669 (sale price)	0.99×	≈ typical price for its kind
41/69	Princeton Ontario earth sheltered LEED home	Canada	$2,690 (asking)	0.99×	≈ typical price for its kind
42/69	Thayer County Road 328 earth berm home	United States	$2,690 (asking)	0.99×	≈ typical price for its kind
43/69	Front Royal Bowling Green earth-berm home	United States	$2,759 (asking)	1.02×	≈ typical price for its kind
44/69	Paradise Valley two earth sheltered bunker homes	United States	$2,781 (asking)	1.03×	≈ typical price for its kind
45/69	Barry's Bay Paugh Lake earth-sheltered home	Canada	$2,727 (sale price)	1.05×	≈ typical price for its kind
46/69	Rossendale Manitoba earth-sheltered riverfront home	Canada	$2,809 (asking)	1.08×	≈ typical price for its kind
47/69	Dahlonega earth-sheltered town berm home	United States	$3,032 (sale price)	1.12×	≈ typical price for its kind
48/69	Ver-sur-Mer Arromanches 75 m2 habitable blockhaus	France	$3,068 (asking)	1.14×	≈ typical price for its kind
49/69	Phoenix Joy Ranch earth-sheltered home	United States	$3,111 (asking)	1.15×	≈ typical price for its kind
50/69	Willow Springs Highway 137 earth-berm home	United States	$3,135 (asking)	1.16×	▲ 1.2× the typical price
51/69	Santorini Emporio Kasteli cave villa 68m2	Greece	$3,321 (asking)	1.23×	▲ 1.2× the typical price
52/69	Spruce Pine 1112 sqft earth-sheltered berm home	United States	$3,340 (asking)	1.23×	▲ 1.2× the typical price
53/69	New Fairfield SUNBERM earth-sheltered home	United States	$3,414 (sale price)	1.26×	▲ 1.3× the typical price
54/69	Houston Able Road earth berm country retreat	United States	$3,489 (asking)	1.29×	▲ ~1.3× the typical price
55/69	Rogue River earth-sheltered off-grid home	United States	$3,615 (sale price)	1.33×	▲ ~1.3× the typical price
56/69	Wabasha underground prepper retreat	United States	$3,661 (asking)	1.35×	▲ ~1.4× the typical price
57/69	Burnsville passive solar bermed home	United States	$3,672 (asking)	1.36×	▲ ~1.4× the typical price
58/69	Maple City Trumbull Road earth berm home	United States	$4,367 (sale price)	1.61×	▲ ~1.6× the typical price
59/69	Ladysmith prepper waterfront earth-sheltered home	United States	$4,484 (sale price)	1.66×	▲ ~1.7× the typical price
60/69	Montrose Cactus Place passive solar earth berm home	United States	$4,762 (asking)	1.76×	▲ ~1.8× the typical price
61/69	Garberville earth-sheltered prepper escape	United States	$5,377 (asking)	1.99×	▲ 2.0× the typical price
62/69	Santorini Pirgos cave villa 141m2	Greece	$5,720 (asking)	2.11×	▲ 2.1× the typical price
63/69	Castkovce Talpa House underground home	Slovakia	$5,974 (asking)	2.22×	▲ 2.2× the typical price
64/69	Santorini Exo Gonia cave house 25m2	Greece	$6,452 (asking)	2.38×	▲ 2.4× the typical price
65/69	Caversfield converted World War II bunker home	United Kingdom	$6,600 (asking)	2.45×	▲ 2.5× the typical price
66/69	Metchosin Spellman Place all concrete earth sheltered home	Canada	$6,678 (asking)	2.48×	▲ 2.5× the typical price
67/69	Pagosa Springs semi-underground custom home	United States	$7,139 (asking)	2.65×	▲ ~2.7× the typical price
68/69	Askos Agios Nikolaos earth-sheltered villa	Greece	$7,597 (asking)	2.82×	▲ ~2.8× the typical price
69/69	Bertram Texas reinforced concrete earth-sheltered home	United States	$11,885 (asking)	4.42×	▲ 4.4× the typical price

PT2 — Certified shelter units · Transferable real estate

Reference $491/m² · 13 rows / 7 source clusters · thin (n_eff 5–7)

#	Asset	Country	USD/m²	vs reference	Position
1/13	Zvolen antiatomic shelter storage premises	Slovakia	$67 (asking)	0.12×	▼ 12% of the typical price
2/13	Riga Vecmilgravis bomb-shelter storage room	Latvia	$158 (asking)	0.28×	▼ ~28% of the typical price
3/13	Riga Jugla Tirzas 62 m2 former bomb-shelter storage premises	Latvia	$172 (asking)	0.35×	▼ ~35% of the typical price
4/13	Riga Vecmilgravis 14 m2 bomb-shelter room	Latvia	$192 (asking)	0.39×	▼ ~39% of the typical price
5/13	Riga Teika Gatves Lofti 83 m2 former bomb-shelter basement premises	Latvia	$323 (asking)	0.66×	▼ ~66% of the typical price
6/13	Vilnius old-town 50 m2 basement shelter sale evidence	Lithuania	$430 (asking)	0.77×	▼ ~77% of the typical price
7/13	Riga Teika Gatves Lofti 72 m2 former bomb-shelter storage premises	Latvia	$491 (asking)	1.14×	≈ typical price for its kind
8/13	Riga Teika Gatves Lofti 63 m2 former bomb-shelter basement premises	Latvia	$493 (asking)	1.15×	≈ typical price for its kind
9/13	Kalthaeusern 54 m2 separately priced Schutzraum add-on	Switzerland	$627 (asking)	1.36×	▲ ~1.4× the typical price
10/13	Riga Teika Gatves Lofti 15.3 m2 former bomb-shelter basement premises	Latvia	$632 (asking)	1.47×	▲ ~1.5× the typical price
11/13	Oostburg land parcel with underground atomic bunker	Netherlands	$965 (asking)	2.10×	▲ 2.1× the typical price
12/13	Riga Teika Brivibas gatve 70 m2 former bomb-shelter premises	Latvia	$1,052 (asking)	2.45×	▲ ~2.4× the typical price
13/13	Rodels Quattro separately priced Keller Schutzraum	Switzerland	$2,808 (asking)	6.11×	▲ 6.1× the typical price

PT3 — Purpose-built standalone · Transferable real estate

Reference $766/m² (IQR $444–$1,515) · 50 rows / 36 source clusters · established (n_eff ≥ 20)

#	Asset	Country	USD/m²	vs reference	Position
1/50	Priekule Ezeri former communications underground bunker	Latvia	$25 (asking)	0.03×	▼ 3% of the typical price
2/50	La Spezia former WWII air-raid bunker	Italy	$87 (asking)	0.11×	▼ 11% of the typical price
3/50	Reopalu former Eesti Energia control shelter	Estonia	$93 (asking)	0.12×	▼ 12% of the typical price
4/50	Ballymena Woodside Road nuclear bunker	United Kingdom	$165 (asking)	0.21×	▼ 21% of the typical price
5/50	Newquay disused Cold War bunker	United Kingdom	$222 (asking)	0.29×	▼ 29% of the typical price
6/50	Edgemont bunker in former military survival community	United States	$269 (asking)	0.35×	▼ ~35% of the typical price
7/50	Emden city center 50 room bunker	Germany	$279 (asking)	0.36×	▼ ~36% of the typical price
8/50	Equeurdreville semi-buried military bunker	France	$293 (asking)	0.38×	▼ 38% of the typical price
9/50	Ploiesti WWII bunker archived sale evidence	Romania	$323 (asking)	0.42×	▼ 42% of the typical price
10/50	Kaunas Zaliakalnis Radvilenu shelter premises	Lithuania	$347 (asking)	0.45×	▼ 45% of the typical price
11/50	Sundbyberg Gotgatan former shelter cellar premises	Sweden	$388 (asking)	0.50×	▼ 50% of the typical price
12/50	Recklinghausen Grullbadstrasse 660 m2 atombunker	Germany	$415 (asking)	0.54×	▼ 54% of the typical price
13/50	Ossjo Angelholm HC Hugo civil-defense bunker	Sweden	$464 (auction bid)	0.60×	▼ 60% of the typical price
14/50	Nemencine 163 m2 hillside shelter bunker	Lithuania	$493 (asking)	0.63×	▼ ~63% of the typical price
15/50	Baker I-15 underground bunker with acreage	United States	$501 (asking)	0.65×	▼ ~65% of the typical price
16/50	Schoenebeck listed bunker with 314 m2 bunkeranlage	Germany	$584 (asking)	0.76×	▼ 76% of the typical price
17/50	Cherbourg centre 250 m2 bunker	France	$690 (sale price)	0.89×	≈ typical price for its kind
18/50	Mogeltonder late-Cold-War underground bunker with EMP room	Denmark	$696 (sale price)	0.89×	≈ typical price for its kind
19/50	Zagreb Trnje 107 m2 atomic shelter warehouse	Croatia	$703 (asking)	0.90×	≈ typical price for its kind
20/50	Bremen Sebaldsbrueck air-raid bunker	Germany	$705 (asking)	0.91×	≈ typical price for its kind
21/50	Wiechlice airport shelter commercial building	Poland	$709 (asking)	0.91×	≈ typical price for its kind
22/50	Tourcoing Message Verlaine 400 m2 military bunker	France	$715 (asking)	0.92×	≈ typical price for its kind
23/50	Vilnius Naujamiestis 164 m2 private bomb shelter listing	Lithuania	$754 (asking)	0.97×	≈ typical price for its kind
24/50	Dolne Hamre civil atomic shelter	Slovakia	$778 (asking)	1.03×	≈ typical price for its kind
25/50	Zagreb Kruge 107 m2 atomic shelter storage premises	Croatia	$804 (asking)	1.05×	≈ typical price for its kind
26/50	Riga Imanta 230 m2 bomb shelter listing	Latvia	$818 (asking)	1.07×	≈ typical price for its kind
27/50	Neuss Reuschenberg 600 m2 bunker	Germany	$887 (asking)	1.18×	▲ 1.2× the typical price
28/50	Herne Wanne-Eickel central bunker redevelopment	Germany	$932 (asking)	1.23×	▲ 1.2× the typical price
29/50	Split Bol 135 m2 atomic-shelter storage space	Croatia	$996 (asking)	1.30×	▲ 1.3× the typical price
30/50	Hamburg Harburg Phoenix-Viertel high bunker	Germany	$994 (asking)	1.33×	▲ 1.3× the typical price
31/50	Kezmarok Slovak Estate underground military shelter	Slovakia	$1,046 (asking)	1.39×	▲ ~1.4× the typical price
32/50	Sesvete 93 m2 atomic shelter business space	Croatia	$1,098 (asking)	1.43×	▲ ~1.4× the typical price
33/50	Split Gripe 145 m2 basement shelter storage premises	Croatia	$1,105 (asking)	1.44×	▲ ~1.4× the typical price
34/50	Saint-Malo Rocher 337 m2 blockhaus	France	$1,149 (asking)	1.52×	▲ ~1.5× the typical price
35/50	Bunker with large corner plot in Ferienpark den Heyberg	Germany	$1,382 (asking)	1.85×	▲ 1.9× the typical price
36/50	Hornstein former Bundesheer bunker	Austria	$1,398 (asking)	1.85×	▲ 1.9× the typical price
37/50	Lyss equipped archive bunker	Switzerland	$1,492 (asking)	1.98×	▲ 2.0× the typical price
38/50	Split Skrape atomic-standard basement business premises	Croatia	$1,549 (asking)	2.02×	▲ 2.0× the typical price
39/50	Bremen Ruhrstrasse high bunker	Germany	$1,588 (asking)	2.11×	▲ 2.1× the typical price
40/50	Rio di Pusteria bunker with land	Italy	$1,670 (asking)	2.21×	▲ 2.2× the typical price
41/50	Split Firule class A atomic shelter	Croatia	$1,702 (asking)	2.22×	▲ 2.2× the typical price
42/50	Crevari WWII armored sea-view bunker listing	Italy	$2,275 (asking)	3.02×	▲ ~3.0× the typical price
43/50	Cap Ferret 120 m2 buried blockhaus	France	$2,643 (asking)	3.51×	▲ 3.5× the typical price
44/50	Minden Koenigswall 590 m2 powder-magazine bunker	Germany	$3,007 (asking)	4.03×	▲ 4.0× the typical price
45/50	Banska Bystrica Ceskoslovenskej armady 69.27 m2 atomic shelter	Slovakia	$3,089 (asking)	4.10×	▲ 4.1× the typical price
46/50	Hovdinge Ljungby civil-defense bunker property	Sweden	$3,166 (asking)	4.20×	▲ 4.2× the typical price
47/50	Banska Bystrica private antiatomic bunker	Slovakia	$3,840 (asking)	5.09×	▲ 5.1× the typical price
48/50	Millmont AT&T Long Lines underground bunker	United States	$4,485 (asking)	5.95×	▲ 5.9× the typical price
49/50	Vilnius Gedimino private shelter premises	Lithuania	$5,094 (asking)	6.94×	▲ 6.9× the typical price
50/50	Parndorf military deep bunker	Austria	$7,467 (asking)	9.90×	▲ 9.9× the typical price

PT4 — Geological / strategic · Transferable real estate

Reference $1,051/m² · 6 rows / 6 source clusters · thin (n_eff 5–7)

#	Asset	Country	USD/m²	vs reference	Position
1/7	Matfors Rude 181 bergrum sandsilo 180 m2 archived listing	Sweden	$431 (asking)	0.39×	▼ ~39% of the typical price
2/7	Sardinien Laggarebacken Alingsas bunker operator-held	Sweden	$412 (asking)	0.39×	▼ ~39% of the typical price
3/7	Moss Asveien 15 fjellhall former tilfluktsrom 408 m2 with plot	Norway	$837 (asking)	0.75×	▼ ~75% of the typical price
4/7	Usteryd Vaxjo former civil-defense bunker	Sweden	$988 (asking)	0.88×	≈ typical price for its kind
5/7	Atlas E Missile Base Sprague WA	United States	$1,118 (asking)	1.13×	≈ typical price for its kind
6/7	Are Bjornange 2:22 industrial property with bergrum	Sweden	$1,224 (asking)	1.24×	▲ ~1.2× the typical price
7/7	Rolling Hills Atlas F Missile Silo Lincoln KS	United States	$5,603 (asking)	5.67×	▲ 5.7× the typical price

Methodology version 2 · duplicates collapsed: 113 · cohorts below n_eff 5 publish no reference and are omitted here · full spec and battle-test evidence in the repository (docs/methodology-v2.md). Not an appraisal; not investment advice.

Assembling intelligence…

Reading listings, research log, and source-health evidence.