I’ve asked PornHub to remove the material shot in our home without our consent, but I imagine that will be ignored, too.  

Seller Written Consent required for, Assignee Name, prequal/cash verification, & Monetary Consideration, if any.

Thats part of the NAR/DOJ consent decree on IDX technology thats almost 20 years old now. it was around 2020/2021 that each got licensed as brokerages. 

In this case both property owners need to consent to have the tree removed and becomes a civil matter.

Next step is mutual consent.

The senior consenting to the sale could change that outcome but they would be a fool to consent considering not consenting, preserves their claims against the property.  

They can't even have their own driver license if is not for their parent/guardian consent! 

@Jingru Sui instead of a master lease I basically created my own rental lease that includes written consent to sublease, home modifications, and a few things that were relevant to my objective.

No issues.If the seller's property isn't free and clear, use a Sub-To and obtain title.You can have issues having a lease-option with repairs or rehab required as you'd need the owner's consent and willingness to work with you, a lease doesn't give you owner's rights to encumber a property by contractors or material suppliers, at least cleanly nor might you be able to obtain permits and insurance coverage may be more difficult.....so get title.Stay out of jail and don't get creative in financing without expert, (non-guru) advise.

They did not have my consent when they painted my house.