Can the manager of the mobile home park we rent a lot in require a key to our house we are buying?

We recently decided to buy the mobile home we were renting and obtained a mortgage loan and are making payments and paying lot rent to the mobile home park. Can the mobile home park demand a key to our house since we are buying it instead of renting now? Can they legally enter our house just like if we were renting it? (for general maintenance or such, as long as they follow proper notifications and such?) Or is it considered our private property and they have no rights to it as long as we are not in default anywhere? We are in Texas if that matters.

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