<prompt> Human: I own a semi-detached house in Essex, UK. I bought the house April 2013 for 187,500. My mortage on the property is 155,000 at an APR of 3.8 and my repayments are 749 per month. With the improvements Ive made the house is easily worth 200,000 now, perhaps even a tad more.Ive been presented with an opportunity to buy the house next door which has been sat empty for about 7 years. It needs modernisation throughout but its a solid house built in 1983 so the work required is largely aesthetic. The property isnt on the open market because I approached the vendor privately and made an offer of 200,000. Its probably worth closer to 210,000 - 215,000 but he accepted my offer because he wants an easy sale. Ive got a mortgage in principle agreed for 160,000 and the lender wants a 40,000 deposit to make up the difference. My repayments on this new mortgage will be 700 per month but Ive got somebody to let the new house out to at 825 per month so thats not a problem.Heres the crunch and the reason Im reaching out for your thoughts Reddit...My other half is concerned that by taking on the property next door were going to clear out any savings on the deposit we are and live life for the next couple of years in a way thats not as comfortable as my salary should allow. Ive got an eight month old kid, and my other half isnt currently earning as she looks after him but in a couple of years that will most likely change as shes very employable. I currently clear 5,000 per month and including saving 500 per month after all expenses I have about 2,000 left each month. I should add Im self employed but business is pretty good and I dont see that changing any time soon but of course theres always a risk.I understand where shes coming from, shes worried that well have nothing short term to look forward to because Im hedging all of my bets on this opportunity that I feel has dropped in my lap. Am I being too mediumlong term minded? What else should I factor in? Is there something Im missing here that doesnt make this sound like the amazing deal I believe it is?Thanks as always for any feedback.  <response>: The red flag for me is full-value offer. If it has sat empty for 7 years you should have offered something less, like 20 below market. 