When I was younger about 10-13 or 14 my family had lived in a house my step mom had inherited from her parents after her father's death and her mom due to the memories not wanting to live there anymore. The house was old, having been there since the Civil War Era and needed quite a few repairs. My father, being in construction, started remodling the house and that was when strange things began to happen.
At first it was things like my dads tools ending up in odd places which he thought was either me or my two younger brothers messing with them. As he progressed in the remodling though things got worse. We began to hear footsteps on the stairs at night and the doors opening or closing which we thought was the wind or a draft.
The first sign and the start of the more serious occurrences was at my eleventh birthday slumber party. My friends and I were camped out on the living room floor and one of my friends freaked out and said there was an old woman staring in the window. We all just thought she was trying to scare us and ignored it and went to sleep.
A few weeks later my dad had came to the kitchen to get a drink; which had woken me up because my bedroom was the only one downstairs and was next to the kitchen. I was just starting to drift back to sleep when I heard my dad shout and a slight thump on the stairs. I had gotten up to check on him to see if he was okay in case he fell down the steps. When I got there he was shaking and told me not to worry about it. That next morning I overheard him telling my step-mom about the old woman he saw walking up the steps and disappear once she reached the top step.
After that things seemed to calm down slightly except for the footsteps and the occasional door slamming. So we kind of just wrote everything off. About a year or two later was when the largest occurrence happened. My dad had just finished the upstairs closet and had built glass shelving onto the dining room wall. It was early in the morning and everyone had just woke up. All the doors leading outside were still locked and my brothers and I were watching the morning cartoons, my dad was in the shower and my step mom was cooking. When suddenly every door in the house slammed open at once and the new shelves fell off the wall.
Shortly after that we moved. My uncle told me a couple years ago that the people who bought the house have been, since they bought it, trying to get my parents to buy it back because of stuff happening there.