If you buy for investment
1. Do your maths.
Acquisition cost, outgoing cost, renovation cost, rental yield, return on investment, cash floor and etc. Worth to invest or not, the number will tell.
2. Do your research
Target tenant or future buyer, supply and demand at that area, current and future development, and etc.
3. Be prepared for the raining day
Do you have enough fund to support you if your investment property unable to rent out, says 4-6 months?

There is no good or bad time to buy an investment property.
It is always a bad idea to invest when you follow the crowd and don't know what the risks are.