ROCAS Corp. provides residential and commercial renovation, restoration, and construction services throughout Sumida (墨田区) and the surrounding area.
Our team is familiar with the building types, permit requirements, and access constraints common in Sumida, from older mixed residential-commercial buildings near the Sumida River. That local knowledge helps projects stay on schedule.
Whether it's a residential renovation, an office fit-out, or 原状回復 tenant restoration, we handle the full scope in-house.
We start every Sumida project with an on-site assessment — accounting for building-management rules, access constraints (elevator size, work-hour restrictions), and any ward-specific permit requirements before we quote.
From there you get a fixed-scope quote, a dedicated project manager for the duration of the work, and a final walkthrough before handover. The same in-house trades team handles the work start to finish — no rotating subcontractors.