Do I need to move out for chimney breast removal?

Obviously these two rooms will be completely out of use to you and your family until the works are completed. That being said, if your builder deploys a proper portable plastic door system to seal off these rooms from the rest of the house then things should be fine. Ensure floor protection is laid up your stairs to protect carpets from dirt being tracked through the house. Can you live comfortably in your house without the use of these two rooms? Can you come and go via a back door, do you think your children are likely to get into these rooms on evenings after builders have left for the day? If there’s any risk of your children entering these areas I would recommend having them stay elsewhere. Definitely have yourself, family member or personal project manager visit site to check on works though. Don’t just disappear for a few days. Removing chimney breasts on both floors can be risky - do you have a big brick chimney on your roof above this part of your house? If you do, these chimney breasts support the weight of that chimney. If works aren’t done properly there is risk of the chimney collapsing through the roof, first floor and likely into the lower ground room. I hope a structural engineer has been consulted on this job before works are completed.

This is personal choice really but i wouldn't. 90% of the removal will be done by lump hammer just loosen and remove each brick. its only bricks that are keyed in with the other walls that need to be cut and there isnt usually many of them in the scheme of things. Obviously there are risks to doing this work but these should be mitigated by the fact you are paying for rather than doing the work yourself given as good builder. House improvements are never good but i doubt it will be a major issue.

Yes there will be lots of dust, the rooms will need clearing. I wouldn't have children or adults living in the property whilst this work goes on. Also make sure the structural engineers and building control have been called and adviced.

Please Don’t assume when it comes Constuction make sure they cover everything. Ensure your home and the builder is insured properly , ask to see the insurance certificate!!! . I personally wouldn’t stay there with children the dust is not good for anyone and it will get everywhere!!! even care is taken. Also ensure structural support is put in place for the chimney !!!