Theres no way that this piece would hold 500 lb. I bought a sectional from you and its a lot more solid than this I think that it really should have an extra set of legs in the middle its wobbly and I bought in a lot of furniture from you and put it together but I bought it for my dog so they could be up off the ground the cold winter months that they like to look out the front picture window so its fine for them but when I sit down on it I sit on the edge of it because Im not comfortable with it 500 lb for how long and place to where in the unit is what Id like to know, as well as my entire family. As usual with all of your furniture products it goes together very well. Its great for your dogs if you want to buy them their own piece of furniture its perfect!!