Hi Lee eng let put in this way,it is wise to apply for a building permit and work with the local building department for legal, safety, and insurance reasons. Some contractors will arrange this for you but others will advise you to do it yourself, but what I heard from the local if contractor apply for a building permit the building-officials at the Municipality might abuse the situation and demand extra payment…you know, the usual stuff.
Besides enjoying the peace of mind that comes from knowing your project meets safety and quality standards, you may also gain protection down the road. Without the Philippine building permits requirements and adherence to the corresponding inspection process, you may find yourself defending shoddy or unsafe work. Having worked with a permit to build in the Philippines also comes in handy when you sell your house, because real estate laws may require you to disclose whether the Philippine Building Code has been respected.
It is better to work within local building codes. Philippine building permits give you or your contractor formal approval to start a construction project. But before applying for a permit, make sure the construction of your house or commercial building is allowed by your local (subdivision-) building and zoning codes. Local building codes are based in part on standards set by regional- and national code organizations. These organizations work to ensure that homes are built and remodeled to meet reasonable safety requirements.