Image｜This is a generated image and does not depict an actual streetscape or building.

Compare High-Rise Condominiums near Edogawa Ward

PROUD TOWER KOIWA FIRST and ALPHA GRANDE KOIWA SKY FIRST

Compare PROUD TOWER KOIWA FIRST (22 stories above ground, Built in 2022, Total 233 units, Estimated sale value for 70 m² on floor 11: approx. JPY 97,560,000) and ALPHA GRANDE KOIWA SKY FIRST (29 stories above ground, Built in 2015, Total 177 units, Estimated sale value for 70 m² on floor 15: approx. JPY 83,350,000) in Edogawa Ward side by side using the same fields.

PROUD TOWER KOIWA FIRST

Edogawa Ward, Minamikoiwa 6-chome · 22 floors · Built in 2022 · 233 total units

Sale Valuation (70㎡ · 11F): Approx. JPY 97,560,000
Price per Tsubo: Approx. 460.7 × ¥10,000/tsubo
Rent Valuation: Approx. 30.8 × ¥10,000/month

Building Page ／ View recent listings and price reductions

ALPHA GRANDE KOIWA SKY FIRST

Edogawa Ward, Minamikoiwa 7-chome · 29 floors · Built in 2015 · 177 total units

Sale Valuation (70㎡ · 15F): Approx. JPY 83,350,000
Price per Tsubo: Approx. 393.6 × ¥10,000/tsubo
Rent Valuation: Approx. 27.4 × ¥10,000/month

Building Page ／ View recent listings and price reductions

Estimates are AI projections for a standard unit and do not guarantee actual sale prices or rents. Neither building is rated as better; the same fields are simply shown side by side.

Side-by-side comparison

Item	PROUD TOWER KOIWA FIRST	ALPHA GRANDE KOIWA SKY FIRST
Building
Location	Tokyo, Edogawa Ward, Minamikoiwa 6-chome	Tokyo, Edogawa Ward, Minamikoiwa 7-chome
Completed	2022	2015
Number of Floors	22 stories above ground	29 stories above ground
Total units	233 units	177 units
Brands	プラウドタワー Original text 野村不動産株式会社 Original text	—
Nearest stationWalking time is calculated from the road-route distance.	— No route data for stations within a 20-minute walk	— No route data for stations within a 20-minute walk
Amenities and management
Direct station access	Unverified	Unverified
Structural earthquake protection	Seismic response control (Building) Sources and verification dates Seismic response control (Building) — Secondary source · retrieved 2026-10-13	Unverified
Parking capacity	Unverified	Unverified
Parking conditions	Unverified	Parking available (Building) Sources and verification dates Parking available (Building) — Secondary source · retrieved 2026-10-09
Property management company	Unverified	Unverified
Management system and staffing	Daytime staffing (Building)／See the cited source for the official entry (Building) Sources report different values Sources and verification dates Daytime staffing (Building) — Secondary source · retrieved 2026-09-13 See the cited source for the official entry (Building) — Secondary source · retrieved 2026-10-13	Daytime staffing (Building)／24-hour on-site staffing (Building) Sources report different values Sources and verification dates Daytime staffing (Building) — Secondary source · retrieved 2026-09-13 24-hour on-site staffing (Building) — Secondary source · retrieved 2026-10-13
Repair plans and records	Unverified	Unverified
Guest room	Guest room (Building) Sources and verification dates Guest room (Building) — Primary source · retrieved 2026-10-13	Unverified
Lounge	Unverified	Sky lounge (27F) (Building) Sources and verification dates Sky lounge (27F) (Building) — Primary source · retrieved 2026-10-13
Gym	Unverified	Unverified
Concierge	Unverified	Concierge (Building) Sources and verification dates Concierge (Building) — Secondary source · retrieved 2026-10-13
Parcel lockers	Parcel lockers (Building) Sources and verification dates Parcel lockers (Building) — Secondary source · retrieved 2026-10-13	Parcel lockers (Building) Sources and verification dates Parcel lockers (Building) — Secondary source · retrieved 2026-10-13
24-hour trash disposal on every floor	24-hour trash disposal on every floor (Building) Sources and verification dates 24-hour trash disposal on every floor (Building) — Secondary source · retrieved 2026-10-13	24-hour trash disposal on every floor (Building) Sources and verification dates 24-hour trash disposal on every floor (Building) — Secondary source · retrieved 2026-10-13
Interior corridors	Interior corridors (Building) Sources and verification dates Interior corridors (Building) — Secondary source · retrieved 2026-10-13	Interior corridors (Building) Sources and verification dates Interior corridors (Building) — Secondary source · retrieved 2026-10-13
Other shared amenities	Library (Building)／24-hour on-site staffing (Building)／Emergency supply storage (7F) (Building) Sources and verification dates Library (Building) — Secondary source · retrieved 2026-10-13 24-hour on-site staffing (Building) — Secondary source · retrieved 2026-10-13 Emergency supply storage (7F) (Building) — Primary source · retrieved 2026-10-13	Party lounge (Building)／Community / multipurpose room (6F) (Building)／Theater (Building)／Study room (Building)／Kids' room (Building)／24-hour on-site staffing (Building) Sources and verification dates Party lounge (Building) — Secondary source · retrieved 2026-10-13 Community / multipurpose room (6F) (Building) — Secondary source · retrieved 2026-10-13 Theater (Building) — Secondary source · retrieved 2026-10-13 Study room (Building) — Secondary source · retrieved 2026-10-13 Kids' room (Building) — Secondary source · retrieved 2026-10-13 24-hour on-site staffing (Building) — Secondary source · retrieved 2026-10-13
Unverified does not mean that an amenity is unavailable. Amenities shared across a complex may not be located inside every building. Check the management rules for parking availability, eligibility and fees, as well as the conditions for using each facility.
Price guide
Transaction price per tsuboAggregated from records with the same neighborhood and construction year; these are not closed transactions for the building itself.	JPY 4,848,000/tsubo 2026 median · 5 records (南小岩, built in 2022) Original text	JPY 3,770,000/tsubo 2026 median · 2 records (南小岩, built in 2015) Original text
Nearby Land PricesThese are official survey-point prices, not the value of the building's land.	JPY 4,408,000/tsubo 2026 · distance-weighted from 3 nearby locations	JPY 3,780,000/tsubo 2026 · distance-weighted from 3 nearby locations
Year-over-year land-price change	+9.0% Same-location comparison at 3 locations	+8.3% Same-location comparison at 3 locations
Units for sale	5 units Median price per tsubo: JPY 5,093,000/tsubo	2 units Median price per tsubo: JPY 4,642,000/tsubo
Units for rent	5 units Median price per tsubo: JPY 13,742/tsubo/month	0 units
Hazard projections and surroundings (official data)
Liquefaction tendency	— Official data not linked	— Official data not linked
Storm-surge inundation projection	— Official data not linked	— Official data not linked
Flood inundation projection (maximum assumed scale)	— Official data not linked	— Official data not linked
Zoning	— Official data not linked	— Official data not linked
Fire-prevention and quasi-fire-prevention districts	— Official data not linked	— Official data not linked
Passenger traffic at the nearest station	116,612 passengers/day 小岩 Station · 2023 Original text	116,612 passengers/day 小岩 Station · 2023 Original text
Nearby population change (2025→2050)	−4.0% 1,321 people → 1,269 people	−4.0% 1,321 people → 1,269 people
A missing value does not mean the building is safe. Sources and retrieval dates are listed by field on each building page.

Compare more

These buildings were selected by rule as the closest match in floor count, age, and standard-unit estimate among buildings within 800 m in a straight line.