So, I can't remember what exactly I put in them, but I calculated some hypothetical budgets for me at different levels of luxury last year. I've only included the rent-as-a-single option and house with paid-off mortgage option here, as the "live with my parents to save on bills" option, which I actually use at the moment and is cheaper than either of these, is not really relevant here. I've included (edited to make it less easy to identify me) the blurb I wrote to remind myself what the different levels meant. I converted the money figures according to what Google told me. The rent used an average figure for a decent place in a small city in my area.
Extreme Barebones includes only needs (ie bills and healthcare) and professional costs.
Modest Barebones also includes replacement of clothes, some car and train travel, a couple of books a year, a bit of money for Christmas/birthday gifts.
Sweet Barebones also includes a couple of books a month and one hobby spending roughly £5 a week.
Frugal Comfort also includes basic gardening, monthly small snacks, modest monthly charity donation, more car and train travel, 2 to 6 films a year, 1 hobby holiday per year (roughly £150), an additional £5 a week hobby, generous Christmas and birthday allowances.
Mild Extravagance also includes more gardening, even more car and train travel, regular outings (day trips), and a cheap yearly holiday.
Super Luxury also includes weekly snacks, more expensive clothes/hair/beauty options, 4 to 8 films a year, several extra £150 hobby holidays, archery and singing participation, and a more expensive yearly holiday.
Practically Royalty includes basically everything I could ever want in all of the categories I've previously listed, with spending in each category at levels I consider extravagant.
Extreme Barebones rental living £7742.43 = $10 784.43
Modest Barebones rental living £9172.43 = $12 776.28
Sweet Barebones rental living £9632.43 = $13 417.01
Frugal Comfort rental living £10666.43 = $14 857.27
Mild Extravagance rental living £11316.43 = $15 762.66
Super Luxury rental living £12593.14 =$17 540.98
Practically Royalty rental living £18601.86 = $25 910.53
Extreme Barebones home ownership £4660.63 = $6 491.79
Modest Barebones home ownership £6090.63 = $8 483.64
Sweet Barebones home ownership £6550.63 = $9 124.37
Frugal Comfort home ownership £7584.63 = $10 564.63
Mild Extravagance home ownership £8234.63 = $11 470.02
Super Luxury home ownership £9511.34 = $13 248.35
Practically Royalty home ownership £15420.06 = $21 478.60
In practice, were I to be either renting or owning, the costs would likely be cheaper than this as I would avoid looking as a single and so could split bills, since I have one (currently long distance) good friend who would very much like to move in with me at some point already.