in case of double sale of titled property shall be governed by the following rules:
1. The buyer who acquired in good faith and was the first to register the sale shall have a better right.
2.If none of the buyers registered the sale, the buyer who acquired to good faith and was the first one in possession shall have a better right.
3. If none of the buyers registered the sale or took possession, then the buyer who acquired in good faith and has the oldest title shall have a better right
That is right, you have to consult an engr to relocate the lot but it is the responsibility of the seller to give you the correct lot. Sila ang naglalagay ng mga monument o sa tagalog ay muhon o prpr line at dapat lang na ituro sayo ng actual ang property na binibili mo. Kung sakaling mapapasa iyo talaga ang lot ay tama lamang na komunsulta ka sa G.E para rin maging safe ka na hidni ka lumampas ng boundary or kulangin ang iyong lote. Kung namamahalan ka sa engr., at para magkaroon ka lang ng idea kung saan ang lote ay kumuha ka ng copy ng mga katabing lote at i-verify mo sa mga mayari kung saan ang mga lote nila. or kung may konti kang knowledge sa trigo. try to plot the area by using the technical description na nasa title na sa akala mo ay yun ang lote mo at ng mga loteng katabi, try mo rin magpunta sa LRA, hingi ka ng blue print doon ng subdivison plan na yan or map or sa developer kung develop na ang land na yan.
Good luck.