Try To Get In Through A Window
An open window is the fastest way to get into the house if you are unlucky enough to lock yourself out. Carefully squeeze yourself through the window if feasible, and be careful not to hit your head on the window sill or fall into the house and injure yourself.
Alert A Trusted Neighbour, Friend or Family Member
Trusted friends and family members can act as spare key holders, and they are often the first people you should contact. Landlords and caretakers or building managers may also have spare or master keys that could open your door, once they have confirmed your identity. However, never give out the key to your home to anyone you do not trust completely.
Try Using A Laminated Card
You may try to unlock your door using a laminated card—but make sure that is one of little value to you. Try to insert the card in between the door frame and the door, near the latch. Hold the card in a perpendicular position, and then begin to push it, while bending it away from the doorknob. This method will only work with doors that have spring bolts, however.
Consider An Inconspicuous Hiding Place
Although not recommended, this method can help you save on cost. If you live in a semi-detached or detached house, identify an inconspicuous hiding place where you can hide your key should you get locked out in the future.
Call A Locksmith
If all else fails, call a professional locksmith. A quick Google search should reveal professional, genuine companies near your house. The more local they are, the better, giving you a clear indication of their physical location in case of any issues. Of course, this service will cost you, but it prevents you from damaging your lock by trying to break into your house yourself. Most locksmiths in Singapore should get to you within half an hour at the very latest.