Here's a note you can use. Just fill in the bits in brackets:

---

**Hello neighbours!**

Just a quick heads-up that I'm having a birthday get-together at my place this **Saturday ([date]) from around [start time]**.

I'll do my best to keep the noise down and plan to wind things up by **[end time]**. If anything bothers you on the night, please knock on the door or text me on **[phone number]** and I'll sort it straight away.

Thanks for your patience, and sorry in advance for any extra cars on the street!

Best wishes,
**[Your name], No. [house number]**

---

If you get on well with your neighbours, you could also add: *"You'd be very welcome to pop in for a drink!"* Shall I make it more formal, more casual, or shorter?