Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

How big of a mortgage can I realistically afford?
Let's start with income $80K. $6,667/mo. The 28/36 rule suggests you can pay up to $1867 for the mortgage payment, and $2400/mo total debt load. Payment on the full $260K is $1337, well within the numbers. The 401(k) loan for $12,500 will cost about $126/mo (I used 4% for 10 years, the limit for the loan to buy a house) but that will also take the mortgage number down a bit.  The condo fee is low, and the numbers leave my only concern with the down payment. Have you talked to the bank? Most loans charge PMI if more than 80% loan to value (LTV). An important point here - the 28/36 rule allows for 8% (or more ) to be "other than house debt" so in this case a $533 student loan payment wouldn't have impacted the ability to borrow. When looking for a mortgage, you really want to be free of most debt, but not to the point where you have no down payment.  PMI can be expensive when viewed that it's an expense to carry the top 15% or so of the mortgage. Try to avoid it, the idea of a split mortgage, 80% + 15% makes sense, even if the 15% portion is at a higher rate. Let us know what the bank is offering.  I like the idea of the roommate, if $700 is reasonable it makes the numbers even better. Does the roommate have access to a lump sum of money? $700*24 is $16,800. Tell him you'll discount the 2yrs rent to $15000 if he gives you it in advance. This is 10% which is a great return with rates so low. To you it's an extra 5% down. By the way, the ratio of mortgage to income isn't fixed. Of the 28%, let's knock off 4% for tax/insurance, so a $100K earner will have $2167/mo for just the mortgage. At 6%, it will fund $361K, at 5%, $404K, at 4.5%, $427K. So, the range varies but is within your 3-5. Your ratio is below the low end, so again, I'd say the concern should be the payments, but the downpayment being so low.  By the way, taxes - If I recall correctly, Utah's state income tax is 5%, right? So about $4000 for you. Since the standard deduction on Federal taxes is $5800 this year, you probably don't itemize (unless you donate over $2K/yr, in which case, you do). This means that your mortgage interest and property tax are nearly all deductible. The combined interest and property tax will be about $17K, which in effect, will come off the top of your income. You'll start as if you made $63K or so. Can you live on that?