After un kill a monster they will drop magic orb. Then in monster house at a room besides entrance room u can use magic orb and that npc will be in ur house. Each room must contain the same npc. So room 1 could contain lessers and room 2 can comprise guards. Of course u can have ur friends that r lower than 70 to combine... or u can make it only 70+ can join or can make RuneScape gold it so only u could join. There's also a lever to produce dangerous, safe, enjoyable, and off mode. Dangerous meens that when u die u spawn in lumbridge and lose all but 3 finest items. But the npcs can also drop things. Safe mode if u die u lose nothing along with the npcs lose nothing too.
In fun mode u can speak to ur npcs. And in off mode the npcs dont go in any way. Of course where is your monster home? It's either in ur wrench pub in monster house choices, which enables u to chage who can enter, enter monster house and input buddies monster home. Contrary to pohs in runscape if no1 is at the home except u and u die, in pohs u lose things that u dropped when no1 is in there, but in these will possess the gravestone to protect ur items for the time they r allowed.
But if u decided to u can earn a portalsite, instead of wrench option to Buy 2107 runescape gold generate ur portal from these places: lumby swamp, infront of draynor manor. I believe this could be a fantastic idea and it's for free 2p also. . .and no it doesnt increase construction. I would appreciate it if some1 could copy and paste this onto runescape forums, and then place the quick find code.