SAN FRANCISCO (KRON) — Allegations that Twitter has turned office space at its Market Street headquarters in San Francisco into makeshift “motel rooms” for employees are going to be investigated, according to the San Francisco Department of Building Inspection. A report from Forbes cited sources who said several offices at the building had been converted into sleeping quarters.

The quarters were described as “modest bedrooms featuring unmade mattresses, drab curtains and giant conference-room telepresence monitors” in the Forbes report. Tech industry outlet Platformer editor Zoë Schiffer also tweeted that a library at the SF office had been converted into a sleeping area, quoting a current Twitter employee who described it as “cozy.”

Text of a complaint filed to San Francisco’s 311 system that was shared with KRON4 read in part:

“Hello, several offices at Twitter have apparently been turned into motel rooms for workers to live in, contrary to code.”

Communications director with the SF Department of Building Inspection, Patrick Hannan confirmed that the complaint was being investigated, saying, “we investigate all complaints,” adding “we need to make sure the building is being used as intended.”

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“There are different building code requirements for residential buildings, including those being used for short-term stays,” Hannan said. “These codes make sure people are using spaces safely. Everyone in San Francisco deserves a safe place to live, work, play and sleep and no one is above the law.”

The department is reaching out to building representatives to conduct a site inspection as part of its investigation, Hannan confirmed.

“If we find suite 900 no longer meets the building code, we’ll issue a notice of violation, which will be posted to our website,” added Hannan, who said he expects the department to initiate its investigation in the next 72 hours.