You conjure up an extra-dimensional dwelling. Though the interior of the mansion is an extradimensional space, the exterior exists on the plane from which you cast the spell, manifesting as an opulent residence that reveals its magical nature by its perfect cleanliness, immunity to weather conditions, and fantastic workmanship (in the local architectural style). Though the mansion appears to be constructed of mundane, if extravagantly expensive, building materials, its outer surfaces actually act as if they were made of magical force (as a wall of force?). The mansion is as difficult to destroy as a wall of force? is, although a disintegrate? only destroys the mansion with a successful caster level check against a DC of 11 + your caster level.
The mansion must be conjured on flat and solid ground, in a space large enough to contain it. Though it may appear to have windows or other external portals, actually the dwelling has only a single entrance on the plane from which the spell was cast, which is the mansion’s front door. Only those you designate may enter the mansion; the door is shut securely behind you when you enter, and no spell or device may open it from the outside. You may open it again from your own side at will. Teleportation into or out of the mansion is impossible (as if the interior were dimensionally locked?), nor can ethereal or incorporeal creatures pass the mansion’s borders (due to the force barriers that make up the mansion's interface with the plane around it). Planar travel to or from the mansion’s interior is possible, however.
Once observers have passed beyond the entrance, they are in a magnificent foyer with numerous chambers beyond. The atmosphere is clean, fresh, and warm. You can create any floor plan you desire to the limit of the spell’s effect. The place is furnished and contains sufficient foodstuffs to serve a nine-course banquet to a dozen people per caster level. A staff of near-transparent servants (as many as two per caster level), liveried and obedient, wait upon all who enter. The servants function as unseen servant? spells except that they are visible and can go anywhere in the mansion.
Since the place can be entered only through its magical front door, outside conditions do not affect the mansion, nor do conditions inside it pass to the plane beyond.
When you are inside the mansion, you may cast the spell again to extend the spell’s duration, adding as much time as the duration of the second casting without interrupting the mansion’s existence. However, as soon as you leave the mansion, it disappears instantly; any other creatures still inside, or any foreign objects that were brought into the dwelling, are dumped out, appearing in front of the mansion’s entrance.
Focus: A miniature ivory door, a piece of polished marble, and a silver spoon, each worth 5 gp.