Akiya Check – Sample Report – 千葉県館山市北条

Property address

千葉県館山市北条

Coordinates (lat, lon)

34.99492, 139.86658

Scope

Desk review of official government datasets and the listing text. No site visit or building inspection.

1. Overall score

E = HIGH RISK

Risk score 65 / 100

36 of 36 checks verified against official data or the listing (100%)

A 0–19

B 20–34

C 35–49

D 50–64

E 65–100

0 = no known risks

100 = highest risk

Risk category

Points

Share of maximum

Natural hazards

16 / 40

Legal / rebuild

25 / 25

Building & running costs

13 / 15

Market & exit

10 / 20

Biggest factors: Rebuilding prohibited (再建築不可) · Urbanization control area (市街化調整区域, per listing) · Earthquake (J-SHIS, 30-yr probability of JMA 6- or stronger)

How to read this: the score runs from 0 to 100 and a higher number = more risk. The letter is the same score in five bands (A = safest … E = riskiest). Points come only from what the listing states and what official datasets show; “UNKNOWN” items add no points but lower the verified-checks count. Any deal-breaker sets the grade to D or worse.

KEY FINDINGS – CHECK BEFORE YOU BUY

Rebuilding is prohibited (再建築不可): you cannot replace the house if it burns down or collapses.
Urbanization control area (市街化調整区域): rebuilding and change of use need special permission.

2. Can you rebuild? (legal)

Check

Result

Finding

Source

Rebuilding prohibited (再建築不可)

RISK

YES – the listing states rebuilding is prohibited

Listing text

Road frontage (接道)

Road frontage stated

Listing text

Setback required (セットバック)

CAUTION

YES – part of the lot must be ceded on rebuild

Listing text

Urbanization control area (市街化調整区域, per listing)

RISK

YES – rebuilding / change of use is restricted

Listing text

City-planning area division (区域区分)

都市計画区域

MLIT · XKT001

Land-use zone (用途地域)

第１種住居地域 · BCR 60% · FAR 200%

MLIT · XKT002

Location optimization plan (立地適正化計画)

No location optimization plan here

MLIT · XKT003

Fire prevention zone (防火・準防火地域)

Not a fire prevention zone

MLIT · XKT014

Leasehold land (借地権)

Freehold (所有権)

Listing text

Disclosure matters (告知事項)

RISK

YES – the listing flags disclosure matters

Listing text

Heritage designation

No heritage designation mentioned in listing

Listing text

3. Natural hazards (official data)

Check

Result

Finding

Source

Flood (max-scale, 洪水浸水想定)

Not inside a designated zone (per MLIT data)

MLIT · XKT026

Tsunami (津波浸水想定)

Not inside a designated zone (per MLIT data)

MLIT · XKT028

Storm surge (高潮浸水想定)

Not inside a designated zone (per MLIT data)

MLIT · XKT027

Landslide warning zone (土砂災害警戒区域)

Not inside a designated zone (per MLIT data)

MLIT · XKT029

Liquefaction tendency (液状化)

CAUTION

やや液状化しやすい (砂州・砂礫州, level 3)

MLIT · XKT025

Earthquake (J-SHIS, 30-yr probability of JMA 6- or stronger)

CAUTION

75.7 % (JMA 6+ or stronger: 27.8 %)

NIED J-SHIS 2024 average case

NIED J-SHIS

Ground / micro-topography (J-SHIS)

砂州・砂礫州 · AVS30 180.9 m/s · elevation 6.5 m

NIED J-SHIS · GSI

Disaster hazard district (災害危険区域)

Not inside a designated zone (per MLIT data)

MLIT · XKT016

Large-scale filled land (大規模盛土造成地)

Not on mapped large-scale fill

MLIT · XKT020

4. Building & running costs (estimates)

Check

Result

Finding

Source

Listing price

¥3,500,000

Listing text

One-off acquisition costs (rough)

¥210,000 – ¥350,000 (agent fee, registration, acquisition tax, judicial scrivener)

Rule-of-thumb range; not a quote

Estimate

Fixed asset tax (rough)

≈ ¥14,000 – ¥35,000 / year

Based on price; the actual tax uses the assessed value

Estimate

Seismic standard

CAUTION

Built 1978 – pre-1981 (旧耐震). Budget for a seismic assessment / reinforcement

High local shaking probability makes this more important

Listing text

Stated condition

No defects mentioned in listing (does not mean none exist – inspect)

Listing text

Water supply

Public water supply

Listing text

Sewage

CAUTION

Septic tank (浄化槽) – annual maintenance ≈ ¥50,000–80,000

Listing text

Gas

CAUTION

Propane (LPG) – higher running cost than city gas

Listing text

Akiya-bank listing

CAUTION

Yes – check residency / renovation conditions with the municipality

Listing text

5. Market & exit

Check

Result

Finding

Source

Geocoded address

千葉県館山市北条 (34.99492, 139.86658)

GSI geocoder

Population trend (250 m mesh)

RISK

2020 → 2070: -47% (approx. 173 → 91 people)

Steep decline lowers resale liquidity

MLIT · XKT013

Nearby transactions (MLIT)

595 recorded · Quarter: 2026年第1四半期 · Price: 1,400万円 · Land area: 260㎡ · Built: 2002年 · District: 那古 | Quarter: 2023年第2四半期 · Price: 230万円 · Land area: 230㎡ · Built: 1968年 · District: 川名 | Quarter: 2023年第4四半期 · Price: 950万円 · Land area: 220㎡ · Built: 1996年 · District: 船形 | Quarter: 2023年第3四半期 · Price: 1,600万円 · Land area: 165㎡ · Built: 1994年 · District: 船形 | Quarter: 2023年第3四半期 · Price: 750万円 · Land area: 470㎡ · District: 船形 | Quarter: 2023年第2四半期 · Price: 160万円 · Land area: 65㎡ · District: 船形 | Quarter: 2023年第2四半期 · Price: 350万円 · Land area: 130㎡ · District: 船形 | Quarter: 2023年第1四半期 · Price: 950万円 · Land area:

MLIT · XPT001

Price vs. local transactions

Listing ≈ ¥16,627/m² of land vs. local median ¥21,250/m² (595 deals) → 0.78×

Land-area basis; kominka price includes the building, so treat as a rough gauge only

MLIT · XPT001

Nearest railway station (MLIT)

館山 (内房線) – 465 m straight-line

MLIT NLNI · N02

Nearest hospital / clinic (MLIT)

貴家医院 (診療所) – 125 m

MLIT · XKT010

Nearest elementary school (MLIT)

館山市立北条小学校 – 600 m

MLIT · XKT006

6. Questions to ask the agent (copy & paste)

The listing already states all items we check.