I just want to get home

The front door seemed stiffer than usual. The lock turning with greater difficulty. While he struggled with the front door he noticed how flaky the white paint on it had become. Another job to be added to the list of things that barely ever got done. To him there was always another day. Sometimes he missed the days before he had bought the flat, when he rented. In those days he would simply have to call the landlord to ask for something to be fixed. Between the ability to make any deterioration someone else's problem and the choice to move home every couple of years he had gotten used to not having to be concerned about flaky paint or stiff doors.
Renting also meant that he did not have the freedom to change anything beyond the layout of his own furniture. This was a feature he had failed to take advantage of since moving in. Save for adding some self adhesive mirror tiles to the ensuite and bathroom, the carpets and walls were exactly the same. Stained carpets and marked, faded magnolia walls were other things he had on his list to sort out. He wanted to, just not enough to actually spend the time and money doing anything about it.
The change in design of shoe rack, and its contents also failed to register on David's mind. He was just glad to get home after a long an exhausting day capped off with a dreadful drive home in pouring rain.
It wasn't until the door at the top of the stairs opened suddenly that David started to take seriously any hints that something was off. By this point there was no time for him to react. The woman standing at the doorway screamed. David screamed. He jumped back, only just managing to stop him launching himself backwards down the stairs.
'Who the hell are you ?' he spat out, gasping for breath. 'What the fuck are you doing in my flat ?'
'Your flat ?' Her screaming ceasing mid screech. 'I've lived here for five years. This is my flat ! How did you get in !' She took a step toward him. David, intimidated gingerly retreated a step lower on the stairs. He produced his key.
'This is my flat ! This is my key ! See !'
'I bought this flat from the family of some guy that had died on the way home from work. His car came off the road in the rain or something. Who are you and what are you doing here ?'