Kolaboro / Japan / Osaka / Sumitomo Realty & Development
One City Osaka: reviews and facts
What is published about One City Osaka in Fushimimachi, Chuo, Osaka, Osaka, Japan, what official registers and other sources say, and what changed over time. Facts only, each with its source.
Short answer One City Osaka is listed as under construction in Fushimimachi, Chuo, Osaka, Osaka, Japan, by Sumitomo Realty & Development. The handover date on record is Q3 2027. No permit number is published. Transparency score: 31 of 100. Not yet reviewed by Kolaboro (added 13 Nov 2026). There are no verified buyer reviews yet. Last checked 12 Nov 2026.
Six checks at a glance
- ●Permitno number published
- ●Companyin an official register
- ●Handover datedate published
- ○Constructionnot checked yet
- ○Websitenot monitored yet
- ●Official listsno match on sanctions and warning lists
What each colour means
Green: published or confirmed. Amber: partly. Red: not published or the date passed. Grey: not checked yet. Facts, not a verdict.
All key facts
- Developer
- Sumitomo Realty & Development rumavi.com
- Location
- Fushimimachi, Chuo, Osaka, Osaka, Japan
- Stage
- under construction rumavi.com
- Handover on record
- Q3 2027 rumavi.com
- Permit or licence number
- not published
- Kolaboro
- Not yet reviewed by Kolaboro (added 13 Nov 2026)
- Deposit protection
- not yet reviewed
- Page we read
- rumavi.com
listing page (not the developer's site) rumavi.com - Last checked
- 12 Nov 2026
- Open data record
- OSA-002
One email when what is published about One City Osaka changes: handover date, prices, documents or register results.
Free: a PDF report of One City Osaka with every fact and its source. Download the free PDF report
We send a link to confirm first. Every email has a link to stop.
In short
- Not yet reviewed by Kolaboro (added 13 Nov 2026). Our research agent has not reviewed this project yet. Below are only the facts we have, each with its source. No checks, score or label are shown until the review is done.
- One City Osaka is listed as under construction in Fushimimachi, Chuo, Osaka, Osaka, Japan, by Sumitomo Realty & Development. rumavi.com
- The handover date on record is Q3 2027. rumavi.com
- No permit or licence number is published in the sources we read. rumavi.com
What changed since the last check
Last checked 12 Nov 2026.
Nothing to compare yet: changes show here once we hold a second dated copy (first copy 12 Nov 2026).
Is One City Osaka legit? What we could check
Transparency score 31 of 100, computed on 13 Nov 2026 from public sources. kolaboro.com
What is published and checkable about One City Osaka, item by item, with the source of each. This is not a verdict: Kolaboro does not label projects or developers. "Not published" means we found no public source.
Published or confirmed: 4 of 9 items we could check.
This checklist is computed from public facts; our own review of this project is not done yet.
- Developer identified by legal name: No legal company name in the pages we read 0 of 10
- Developer found in an official company register: GLEIF record, LEI 353800SO2DCLOI3LNZ64 5 of 5GLEIF
- Permit or licence number published: No permit or licence number in the pages we read 0 of 15
- Permit confirmed by a register or independent source: Not confirmed in a register by us 0 of 5kolaboro.com
- Handover date published: Published: Q3 2027 10 of 10
- Handover date record: Not enough dated history yet Not checked by us: left out of this project's total.kolaboro.com
- Deposit protection stated: No deposit protection stated in the pages we read 0 of 15
- Address or plot location published: No precise address or plot location published 0 of 10
- Developer website health: Developer website not checked by us Not checked by us: left out of this project's total.
- Official lists screened: sanctions lists: no match; regulator warning lists: no match 5 of 5kolaboro.com
- Price published: Price published 5 of 5
- page we read: rumavi.com Kolaboro
How much does One City Osaka cost?
- Prices and payment plan as published on the pages we read (copy of 12 Nov 2026). rumavi.com
- Payment plan: not published in the pages we read.
- Price from: JPY 60,000,000 - 580,000,000 rumavi.com
- Units: 392 rumavi.com
- Handover promised: Q3 2027 rumavi.com
- Development profile lists status "Under Construction" and completion "Q3 2027" rumavi.com
- 392 units in total, 45 floors as listed on the profile rumavi.com
Total cost to buy at One City Osaka: taxes and fees
Purchase taxes and fees in Japan: not published in our country guide yet. Work it out with your own figures
Prices over time
We hold no dated copy of this page yet, so we cannot show its prices over time. Data as JSON
Price per m² against official data
No official comparison available for this project. The developer does not publish both a starting price and a unit size (no size found), so there is no price per m² to compare.
Compared only with official open data (registered sale prices or official appraised values). How we use data.
When will One City Osaka be completed?
Handover on record: Q3 2027, as seen on rumavi.com on 12 Nov 2026.
Every dated promise we found, how it changed and whether the date has passed. Status rules: promise tracker.
- Handover date on record: Q3 2027. Not moved in our records. rumavi.com
- No dated promise found in the sources we read.
Delivery forecast
Estimate from the dated handover history of comparable projects (Kaplan-Meier), not a finding about this one.
No dated handover promise in our records, so there is no forecast.
Where it should be by now
By today (13 Nov 2026), the developer's own schedule says:
- No promised date has come due yet.
- Next on the schedule: Handover or completion, Q3 2027 (in 8 months).
Add the promised dates to your calendar (.ics) Subscribe, so a moved date updates itself
Dated promises on record: 1, each with its source. A period such as a quarter is placed on its last day. These are the developer's dates, not a confirmation by Kolaboro.
Permits and licences
No permit or licence number published in the sources we read (checked 12 Nov 2026).
- No permit or licence number is published in the sources we read.
Live check in the official registers
Asks the official registers of this country now. Each answer is hashed (SHA-256).
Where is One City Osaka?
Location as published: Fushimimachi, Chuo, Osaka, Osaka, on rumavi.com (checked 12 Nov 2026).
- Area as published: Fushimimachi, Chuo, Osaka, Osaka, Japan. rumavi.com
- Pin on the map: none, because no address or coordinates precise enough are published. rumavi.com
The six buyer checks
Not yet reviewed by Kolaboro (added 13 Nov 2026). Our research agent has not reviewed this project yet. Below are only the facts we have, each with its source. No checks, score or label are shown until the review is done.
Developer claims we tested
| Claim (source wording) | Result | Checked against | Source |
|---|---|---|---|
| Development profile lists status "Under Construction" and completion "Q3 2027" | not verified yet | rumavi.com listing portal | |
| 392 units in total, 45 floors as listed on the profile | not verified yet | rumavi.com listing portal |
What changed, with dates
- No dated change recorded yet.
Public reports
What public sources report, with the link. We list reports; we do not judge the developer.
- No reports of disputes, regulator action, stoppages or financial difficulty found in the sources we read.
Who is the developer of One City Osaka?
Developer as published: Sumitomo Realty & Development, on rumavi.com (checked 12 Nov 2026).
- One City Osaka is developed by Sumitomo Realty & Development, as published on the pages we read. Projects by Sumitomo Realty & Development that we track: 2. rumavi.com
- Dated promises on record: 1; 0 kept, 0 passed without delivery, 0 moved later, 1 still ahead. promise tracker
- Projects of Sumitomo Realty & Development we track: 2 (not yet completed: 2, completed: 0). kolaboro.com
Other projects by Sumitomo Realty & Development that we track
- City Tower Akabane Tokyo
Alternatives to One City Osaka
Projects in Osaka with a published price within 30 % of this one (same currency) and a higher transparency score (this project: 31 of 100). The score counts what is published and checkable, not a recommendation. How the transparency score works
No project in Osaka has a similar published price and a higher transparency score.
Compared side by side
Market context: Osaka
- We track 3 projects in Osaka. 0% publish a permit or licence number and 0% state deposit protection. kolaboro.com/m/osaka/
Buyer reviews
There are no verified buyer reviews of One City Osaka yet. We publish a review only from a buyer who proves the purchase (fingerprint of the contract or receipt, signed with a passkey) and only after a moderator has read it.
Reviews waiting for moderation are not shown.
Right of reply
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Before you pay
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What next
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Questions buyers ask
Is One City Osaka legit?
Kolaboro does not label projects or developers. What the public record shows: Not yet reviewed by Kolaboro (added 13 Nov 2026). No permit or licence number is published in the sources we read. The handover date on record is Q3 2027. No reports of disputes, regulator action, stoppages or financial difficulty found in the sources we read. Published or confirmed: 4 of 9 items we could check. Transparency score: 31 of 100. Check the sources on this page and ask the developer for documents before paying.
Where is One City Osaka?
One City Osaka is in Fushimimachi, Chuo, Osaka, Osaka, Japan, according to the sources listed on this page. Pin on the map: none, because no address or coordinates precise enough are published.
When will One City Osaka be completed?
The handover date on record is Q3 2027.
Is One City Osaka delayed?
The handover date on record is Q3 2027.
Who is the developer of One City Osaka?
Sumitomo Realty & Development, according to the sources listed on this page. Projects by Sumitomo Realty & Development that we track: 2. Dated promises on record: 1; 0 kept, 0 passed without delivery, 0 moved later, 1 still ahead.
Does One City Osaka have a permit or licence?
No permit or licence number is published in the sources we read.
What do buyers say about One City Osaka?
There are no verified buyer reviews yet. Buyers who prove their purchase can submit one; it is published after moderation.
How much does One City Osaka cost?
The lowest price in the sources we read is JPY 60,000,000 and the highest JPY 580,000,000. Prices are as published and can change; ask the developer for the current price list.
What is the transparency score of One City Osaka?
Transparency score: 31 of 100. It counts what is published and checkable, not quality.
When was One City Osaka last checked, and what changed?
Last checked 12 Nov 2026. Nothing to compare yet: changes show here once we hold a second dated copy (first copy 12 Nov 2026). No change to the published facts is recorded.
Sources
Every fact on this page links to its source. Pages we read are fingerprinted and kept by date.
- rumavi.com https://rumavi.com/en/new-developments/japan/osaka-city/one-city-osaka
Last checked 12 Nov 2026. How we collect data: data policy. Facts quoted from sources are shown in the language of the source.