No, no basement. I guess I should have specified that I have heard voices more so than noises, though when I am alone at my grandparents I often hear what sounds like a radio or TV turned on in another room. I always search the entire house and all electronics are always turned off. I usually will even go outside to make sure it is not coming from a neighboring house or business, but I never hear anything outside.
On several occasions when we used to mostly use the bathroom at the rear of our house I would get out late and night and go back there and while everyone else would be asleep I would hear what sounded like someone talking outside. Several times I got up the courage to either look outside or if I was really brave actually go outside and I never seen anything. Most of the time I do not feel like there is any presence at my house, but there has been a few strange occurrences. I remember years ago when I was still in school and my parents lived here I would come home everyday and be here by myself for several hours. On one day I got home and decided to walk to the back of our property to check and see what the water level was like in our pond. Upon getting close to the house on the way back I noticed the door was open. From inside I heard what very clearly sounded like two men arguing in Spanish. I got scared and used my cell phone to call my mom who was an hour away still at work because I literally thought a couple of men had broken into our house while I was out by the pond. She didn't seem to really believe me so she reluctantly called my grandpa and asked him to come check the house out. I hid behind a hay bale and watched the house for the whole 10 minutes it took him to get there. No one ever left the house. He went in and looked around and didn't find anyone. He stayed there with me until my dad got home and did a through search of the house and never found anything out of place. On very rare occasions my husband or I get the feeling of someone watching us. A friend of mine was staying with us awhile back and he was getting the strange sensation that someone was watching him while he was in the shower. He said he looked out into the living room (why he didn't shut the bathroom door I do not know) and thought he caught a glimpse of a man dressed in a mariachi suit as strange as that sounds.
The first time I remember ever seeing what I thought to be a ghost was when I was about 6-7. My grandmother had a cat at her house I loved. I had just gotten to her house for the weekend and was sitting in the living room. The cat was a calico named Calico lol. She did have one other cat but it was mostly black with a little white. I seen a cat that looked just like Calico run from the kitchen into the bedroom. Since Calico usually greeted me when I first got there I thought it strange she did not come to say hi, so I went after her calling her name. My grandma stopped me and asked me to come into the living room and sit down. She then proceeded to tell me that Calico had gotten outside and had been killed by a car a few days before. I know I clearly seen a cat run by and it was a mostly white cat. I do not have any other explanation than it had to have been Calico still hanging around even after she had passed away.
I have seen a few other things too. I often stay at my grandparents house during the day helping them out. One day I was walking down the hallway and at the far end of it there is a mirror. In the end of it I seen a man behind me that I thought was my grandpa. I turned around to say something to him and he was not there. I went back out the kitchen to look for him and noticed out the window their van was gone. They were not even home. More than once I have been at their house alone and have gotten such an eerie feeling that I have literally gone outside and sat on the porch and waited until someone got there to even go back inside.
There has been other things as well but those are some of the main ones I can think of at the moment.
One of the real reasons I am torn is because this month is the two year anniversary of the day my grandpa on my dad's side passed away very suddenly (as in conscience and coherent when the ambulance came to pick him up because he was not feeling well, to in a coma by time he got into the hospital without ever having a chance to tell anyone any type of goodbye, and gone a few hours later.). If there was some way for him to come back to us (specially if he could play a practical joke on us), I would think he would be the type to try. I don't know maybe he was content to move on as soon as he passed away. I do believe though when he was in the coma and could not respond, he knew we were with him at the end. He actually died within minutes of my great grandma (his mom) getting to the hospital and saying goodbye...maybe that was enough for him. I just wish I knew that if people did not go straight to heaven or hell when they died...why and how some stick around and others do not. I guess that is not for us to know.
On a strange note a few weeks ago my dad ran into an old friend of my grandpas that did not know he had passed away. He had told my dad that he had seen my grandpa a few days before at a cafe my grandpa often went to for breakfast and had a good conversation with him. My dad told him that was impossible because my grandpa had been dead for nearly two years and the guy was dumbfounded. He was pretty insistent that it was without a doubt my grandpa that he had talked to.
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Sorry for the long post, I kept thinking of more and more things to add.