What will boost your home's value? You want to add a sunroom but will that bring in the biggest bang for your buck? How about a new bathroom? It's a common question that many homeowners ask. What will we get back when we sell? This can be a hard question to answer but luckily Bankrate.com and Remodeling Magazine has come up with a list of the worst home fixes for the money. Here are the six improvements that ranked dead last nationally when it comes to getting those renovation dollars back at resale. 1. A Home Office-The standard home office renovation is this year's biggest loser in the resale value sweepstakes. Nationally, homeowners spent an average of $28,888 and can expect to recoup about 45.8 percent at resale, according to the report. If you want to enjoy a home office opt for something that is easily converted back into a bedroom or den. 2. Backup Generators-This only usually brings about negative thoughts like does this home loose power often? On average, when homeowners have a heavy-duty backup power generator installed, they spend about $14,718, according to the report. The average amount of the price recovered at resale time: 48.5 percent. 3. A Sunroom-While the thought is sitting and enjoying a sunroom may sound lovely to you but the addition of a sunroom is often more than you can recoup. The national average for a sunroom addition is $75,224, according to the report. Homeowners can expect to recoup about 48.6 percent when they sell. 4. A Master Suite-It is the price tag of this addition that can also leave sellers in the red. For a super-deluxe master suite addition -- which adds square footage and uses only top-dollar materials -- the average cost is about $232,062, according to the report. Sellers can expect to recover about 52.7 percent at resale. 5. An Extra Bathroom-Wait kitchens and bathrooms sells houses or thatís what people say. Bathroom additions are very expensive. For a moderately outfitted addition with synthetic stone or plastic laminate surfaces, plan on the cost about $21,695, according to the Remodeling report. Go upscale, with finishes like premium marble or fine tile, and you can easily spend in the neighborhood of $40,710. You can plan on a return of about 53 cents on the dollar. Look for less-expensive way to get the same results. Try reconfiguring your existing space to add a bathroom for less. 6. A Dream Garage-The price tag for a top-of-the-line detached two-car with all the trimmings is about $90,053, according to the report. This is a garage that is completely top-of-the-line. You can expect to recover about 53.6 percent of that when you sell. Instead go for function over form and stick the basic garage if you plan on a garage project.