if my ipad is disbled how do i connect it to wifi

If the device is disabled, you will need to follow the steps in this support document to restore it. If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

Why would it not be connected to Wi-Fi?

Did you set up your Wi-Fi network the same as your other house? If not, have you connected to a public Wi-Fi that would be remembered on your device? Can you not connect the device to your computer?