How to convince my parents to move?

alright...well, basically my dad. me&my mom agree. my two older brothers dont care. BUT.. my dad does. so... me and my mom found this BEAUTIFUL house in the same city just idk like 14 blocks away from my house right now? it is an AMAZING price. me and my mom want to go check it out.. but my dad is all like "no." the house has 4 bedrooms! (5 people in my family..parents share a room, duh) 2 1/2 bathroom. which is SO much better then our house.it also has a HUGE backyard. with a pool. and a patio. my dad loves barbecuing..and the backyard is a place to do it. please.please.please. help! i know alot to read.. but i have a lot to say. THAAAANKS.! <3