[Assessed 96.5%] New-build house in Nagareyama City, Chiba — 15 min from Kita-Kogane Sta.
Property Overview
| Location | Nagareyama City, Chiba |
| Nearest Station | JR Joban Line Kita-Kogane Sta. |
| Walk | 15 min walk |
| Assessed Ratio | 96.5%Assessed 96.5% |
| Price | ¥39,800,000 |
| Type | Detached house |
| Structure | Wooden |
| Built | Built Nov 2026 (0 years old) |
| Land Area | 136.01㎡ |
| Building Area | 109.72㎡ |
Where This Property Is Listed
This property appears on the sites below. Listings matching on location, land area and building area are merged into a single article as the same property.
| Kenbiya | ¥39,800,000View listing |
Assessed Value Breakdown
| Land assessed value | ¥14,281,050 |
| Building assessed value | ¥24,138,400 |
| Total assessed value | ¥38,419,450 |
| Asking price | ¥39,800,000 |
| Assessed ratio | 96.5% |
Calculation basis
- Land = road price ¥105,000/m² × land area 136.01m²
- Building assessed value was entered manually by the operator.
- Built Nov 2026 (0 years old)
Official Road Price Trend (last 3 years)
Cumulative change 2024 → 2026: +20.7%| Year | Road price (JPY/m²) | YoY |
|---|---|---|
| 2024 | 87,000 | — |
| 2025 | 97,000 | +11.5% |
| 2026 | 105,000 | +8.2% |
※ Based on inheritance-tax road prices published each July — a reference for the trend in land collateral value.
How We Checked This Property
The listing carries just two images — a floor plan and a site plan — and not a single site photograph. With completion set for November 2026 it is likely nothing has been photographed yet, so this is a record of what could be established from the site plan, the roadside value map and elevation data, on the basis that nothing could be judged from images.
What We Could Not Confirm
- With no site photographs at all, retaining walls, any step from the frontage road, stepped access and party-wall construction are all unjudged. Completion is set for November 2026, so it is likely nothing has been photographed yet; we recommend confirming after completion or on site.
- With no lot number published, the roadside value is fixed only at town level. Maegasaki spans four roadside value map sheets with a band from 84D to 120D, which puts the ratio between 89.4% and 101.7%.
- Elevation data shows height differences within 20 m generally under 1 m along the streets on sheet 09271 — a flat plateau. But around the centroid of Maegasaki, on the valley slope towards the Sakagawa, relief reaches 15.2 m over 60 m. The town is not uniformly flat, so the ground of this site needs checking in person.
- Being new, the building carries its full assessed value and accounts for about 63% of the assessment; on the land alone the ratio is 35.9%. The statutory life for wooden construction is 22 years, so the ratio will fall as the years pass.
- The projected yield and full-occupancy income are not published and are available on enquiry. The economics as a new-build rental house should be checked against local rent levels separately. Handover timing is also negotiable.
※ Rather than reproducing the listing as-is, we verified the figures against public sources such as the official road price maps and the listing photos. This is not based on a site visit, so please confirm on site and with the seller before deciding.
Neighborhood ① Shopping Near the Station
Neighborhood ② Dining Near the Station
About This Property
A 39.8 million yen new-build detached house in Maegasaki, Nagareyama City, Chiba, a 15-minute walk from Kita-Kogane Station on the JR Joban Line. Land 136.01 sqm (registry, about 41 tsubo), building 109.72 sqm, wooden two-storey, due for completion in November 2026. It is unfinished, with handover negotiable.
The assessed ratio is 96.5%: 14.28 million yen for the land and 24.14 million yen for the building, 38.42 million yen in total. The inheritance-tax roadside land value for fiscal 2026 is 105,000 yen/sqm (roadside value map 09271). The building is calculated at the wooden replacement unit price of 220,000 yen/sqm over a 22-year statutory life, and being new it carries the full 22 years. The roadside value has risen 20.7% in two years: 87,000 yen in 2024, 97,000 in 2025 and 105,000 in 2026.
Nagareyama still has large urbanisation control areas, so we first checked whether this is a multiplier area. This residential area does carry roadside values, consistent with the listing's urbanisation promotion area and Category I Residential zoning.
Maegasaki spans four roadside value map sheets (09014, 09015, 09267 and 09271). With no lot number published we could not calibrate by coordinates: the Geospatial Information Authority's address API returns only the centroid of the parent lot for Maegasaki, and using the lot annotations printed on the sheets as calibration points reversed the east-west sign, so we did not adopt them.
We took the modal 105D from the residential streets on sheet 09271, which covers the widest part of Maegasaki's housing, and followed the same road across three years. Across sheets the band runs from 84D (southern edge of 09015, towards Negiuchi in Matsudo) to 120D (northern 09271). Even the lowest 84D gives 89.4% and the highest 120D gives 101.7%, so every band clears 80% and the choice of representative value does not change the conclusion. The leasehold ratio symbol is D.
The point to weigh most carefully is that there is not a single site photograph. The listing carries two images — a floor plan and a site plan — with no exterior and no frontage road. Since completion is set for November 2026, we think it likely that no site photographs exist yet. Retaining walls and their retaining height, any step from the frontage road, stepped access and whether this is a party-wall row house are therefore all unjudged.
What the site plan does show is worth recording. The frontage road is a public road under Article 42(1)(1), 4.500 m and 4.320 m wide, ending in a dead end at the north-west corner of the site. The site is close to rectangular (11.88 m west, 10.10 m east, 10.602 m + 2.716 m south, 8.72 m north) and meets the road only along 2.595 m at its north-west corner — satisfying the 2 m access requirement. There is no access strip, so this is not a flagpole plot, and being an Article 42(1)(1) road no setback is required.
For terrain we turned to national 5 m laser survey data. Measuring 60 m squares around the residential area of Maegasaki (near lots 540 and 673, along the streets shown on sheet 09271) gives relief of 2.7 m and 3.5 m, with height differences within 20 m generally under 1 m — a flat plateau. However, around the centroid of Maegasaki (the valley slope towards the Sakagawa) relief reaches 15.2 m over 60 m, so the town is not uniformly flat. With no lot number published we could not measure the ground of this site itself.
Being new, the building carries its full assessed value of 24.14 million yen and accounts for about 63% of the assessment. The statutory life for wooden construction is 22 years, so the ratio will fall as the years pass. On the land alone the ratio is 35.9%.
The projected yield and full-occupancy income are not published; they are available on enquiry.
Estimated Financing
Suggested Lenders
※ General tendencies of lenders covering this area, for information only. This does not guarantee or suggest any specific financing outcome.