Legal Notices: Deadlines, Sending and Service

What the law says

• Dubai — changing terms, including the rent: Law 26/2007, Article 14 — at least 90 days before the contract expires, "unless otherwise agreed". The article names no method of service.
• Dubai — the landlord taking the property back: only on the grounds of Article 25(2) (Law 33/2008) — demolition or reconstruction, restoration or comprehensive maintenance, personal use, or sale — with the reasons stated, at least 12 months before the eviction date, served through a Notary Public or by registered post. An e-mail or WhatsApp copy is not that service.
• Dubai has no separate "non-renewal notice". Law 33/2008 replaced the old Article 14 right to decline renewal on 90 days' notice; today's Article 14 is about changing terms.
• Abu Dhabi: 2 months (residential) or 3 months (commercial, industrial, professional) before expiry, in writing, to change terms or not renew — for either party.
• Sharjah: the published Law names no notary or registered-post rule; the Municipality's contract template makes the parties' phone numbers and e-mail addresses their official addresses for notices.

In TenancyDesk

On a deal's Compliance tab, legal notices are kept with their deadline for the deal's emirate. TenancyDesk prepares the notice document and can send it by e-mail or WhatsApp; when it was delivered by registered post or a notary, you record the service — the date it took effect and the tracking or notary reference. Sending is not the same as serving: TenancyDesk counts the notice period from the service you record.