The first and second floors I rent are shops. A wall was built between the shops. The property requires a deposit of 2000 yuan, saying when to block the wall.

The deposit for wall demolition mainly refers to the restoration of the demolished wall. Because it takes a long time, you need to pay attention to the time relationship between the cracks in the upstairs households' houses and your demolition of the walls. Did the property fulfill its obligation to inform at that time? The property itself does not have the qualification of building structure damage appraisal. Modern houses are mostly frame structures, and non-shear walls are demolished. The fact that the property is recognized (the deposit is refunded) just shows that the property has no role as the main and single judge or coordinator of the incident. If there are cracks in the house upstairs for other reasons, the 1000 yuan deducted by you and the property will not play any role at all, and it is even more difficult to pull. It's not clear yet. There are many reasons for the cracking of houses. In most cases, it is caused by the dry and wet or cold shrinkage of brick masonry partition wall, plus the surface tension shrinkage of plastering layer. As for the plate crack, it has nothing to do with you. The load per square meter is generally above 300 kg. I believe you didn't do it with an excavator, followed by foundation settlement and construction quality, which has nothing to do with you. 1 000 yuan is nothing. Please ask the property to give you a certificate. What happened after that has nothing to do with you forever. If they had any brains, they wouldn't do it. If they really have no brains, they need to indicate the reason for cracking. Then you need to submit it to a notary, step by step, until a third party can identify the cause of the crack. (This is the job of the property. You dare to lift the judge's hammer without writing anything. I believe that only through laws can we safeguard our legitimate rights and interests.