RiverwalkIt's entirely up to you if you name your house or not, don't think it's at all pretentious. Remember that when period houses were built, say sometime in Victorian times, they would also have been allocated a street name and number [especially since posting letters really took off]but would often give the house a name [or the builders would] even for 'small suburban semi's' or [whisper the word!] bungalows. So what is so special about a period [old] house?You do not need a mansion to have a house name.I agree that there are some silly names out there [the costa fortunes etc] but there are also a lot of pretty ones.Some houses in the past did not have numbers [especially in parts of Europe] and would have a topographical kind of name.
Since our houses cost so much, I guess it is up to us to decide on a name if we want one, although most of my houses have been named already so we tend to keep them.We don't live on an estate and our house name reflects the number of apple trees in the garden.However, even if we did buy a house on an estate, I think I would still name the house if I wanted to.It's not pretentiousness, just a matter of choice.