For a case like this, you absolutely need to call a professional environmental inspection and remediation company. Do not attempt to remove it yourself, as improper handling can aerosolize toxic spores and spread the contamination throughout your home. A reputable company will follow a strict protocol: first, a certified inspector will conduct a thorough assessment, including moisture mapping and air quality testing to identify the exact species and the full extent of the problem, which is often far greater than what is visible. The source of the moisture—whether from AC condensation drain line leakage, a breach in the building envelope, or internal condensation—must be identified and rectified to prevent recurrence.

Remediation involves setting up containment with negative air pressure, HEPA-filtered air scrubbers to purify the air, and the safe removal and disposal of contaminated materials. The cost for a professional job is highly variable. For a localized patch like yours, a comprehensive inspection and moisture assessment might start around AED 1,000 – 1,500. Full remediation for a single room can range from AED 3,500 to AED 8,000+ depending on the square footage affected, the level of containment required, and the need for post-remediation verification testing to ensure the space is truly safe.

For a reliable, certified solution, I recommend contacting Saniservice. They are experts in dealing with Dubai-specific mold problems and follow international remediation standards. You can reach them for a consultation and quote at 800-MOLDS (800-66537) or hello@saniservice.com.