Skipping the building permit and losing the slot
In permit-controlled towers, a technician stopped at security is a wasted visit that you may still be charged for. Five minutes with building management before booking, asking about NOCs, service-lift rules and drilling hours, protects both your slot and your deposit with the building.
Fixing developer defects at your own cost
Cracked tiles, failed grout and misaligned kitchen units in a new handover are usually the developer's obligation during the defects liability period. Paying a handyman to fix them both costs you money and can undermine the official snag claim. Document and report first; hire for the jobs the developer never owed you.
Judging the quote instead of the method
The cheapest quote often prices a different job: silicone over silicone, plugs instead of proper anchors, no anti-tip strap on the wardrobe. When quotes differ widely, ask each vendor how they will do the job. The one who mentions wall type, anchors and cure times without prompting is usually the one worth paying.