LAND + HOUSE BUDGET

Cost to build a home in Nakauchimachi

The land estimate uses published transactions with lot sizes comparable to your selection. Prefecture-level building data is shown separately before combining the two.

100 m² lot + 100 m² floor-area model
Estimated total
JPY 42.38M
LandJPY 5.45M
BuildingJPY 33.58M
Ancillary costsJPY 3.36M

Adjust land and building assumptions

Gunma public survey used for the initial building-cost setting
FY2025, 218 land-attached custom homes; derived from an average construction cost of JPY 38.01M and average floor area of 113.2 m².

The initial land and floor areas are each 100 m², adjustable in 1 m² steps. This is a comparison model, not the Japanese average or a guarantee of buildability. Displayed values are rounded; area calculations use unrounded conversions.

LAND PRICE EVIDENCE
Selected land area
100.0 m²
Comparable median
JPY 54,450 / m²JPY 54.45K / m²
Published samples
56 records
Estimate confidence
High

56 published transactions from Municipality, approximately 70.0 m²–130.0 m². Zoning: residential-use records preferred. Confidence: High.

Overall neighborhood reference: JPY 33,275 / m². It remains visible for comparison and is not automatically treated as the selected-lot estimate.Overall neighborhood reference: JPY 33.275K / m². It remains visible for comparison and is not automatically treated as the selected-lot estimate.

Land price
JPY 5.45M
Building cost
JPY 33.58M
Ancillary allowance
JPY 3.36M
Total estimate
JPY 42.38M
Planning model: 100.0 m² building
The simple floor-area-ratio ceiling for a 100.0 m² lot is about 200.0 m². The selected model is within this simple ceiling, but road, setback, height and other rules are not included.

Ancillary costs are provisionally set at 10% of construction cost. Public transaction records are retained; selection only changes which records are used for this estimate.

Source: Japan Housing Finance Agency Flat 35 Survey

Data used in the estimate

LAND / NEIGHBORHOOD DATA

Nakauchimachi

JPY 33,275 / m²JPY 33.275K / m²

Overall reference median for the neighborhood. The interactive estimate separately selects transactions close to the chosen lot size.

View land-price analysis →
BUILDING / PREFECTURE DATA

Gunma

JPY 335,775 / m²JPY 335.775K / m²

FY2025 · 218 survey records.

View construction-cost analysis →

Important limitations

This is an area-level planning estimate, not a quote or confirmation that the selected building can be built on a specific lot.