When you buy a fixer-upper house, you can save a ton of money, or get yourself in a financial fix. Make sure you have the time, skills, and desire to embark on home improvement projects before buying a fixer-upper house.

Trying to decide whether to buy a fixer-upper house? Follow these seven steps, and you’ll know how much you can afford, how much to offer, and whether a fixer-upper house is right for you.

1. Decide what you can do yourself

TV remodeling shows make home improvement work look like a snap. In the real world, attempting a difficult remodeling job that you don’t know how to do will take longer than you think and can lead to less-than-professional results that won’t increase the value of your fixer-upper house.

Do you really have the skills to do it? Some tasks, like stripping wallpaper and painting, are relatively easy. Others, like electrical work, can be dangerous when done by amateurs.

Do you really have the time and desire to do it? Can you take time off work to renovate your fixer-upper house? If not, will you be stressed out by living in a work zone for months while you complete projects on the weekends?

2. Price the cost of repairs and remodeling before you make an offer

Get your contractor into the house to do a walk-through, so he can give you a written cost estimate on the tasks he’s going to do.

If you’re doing the work yourself, price the supplies.

Either way, tack on 10% to 20% to cover unforeseen problems that often arise with a fixer-upper house.

3. Check permit costs

Ask local officials if the work you’re going to do requires a permit and how much that permit costs. Doing work without a permit may save money, but it’ll cause problems when you resell your home.

Decide if you want to get the permits yourself or have the contractor arrange for them. Getting permits can be time-consuming and frustrating. Inspectors may force you to do additional work, or change the way you want to do a project, before they give you the permit.

Factor the time and aggravation of permits into your plans.

4. Double check pricing on structural work

If your fixer-upper home needs major structural work, hire a structural engineer for $500 to $700 to inspect the home before you put in an offer so you can be confident you’ve uncovered and conservatively budgeted for the full extent of the problems.

Get written estimates for repairs before you commit to buying a home with structural issues.

Don’t purchase a home that needs major structural work unless:

You’re getting it at a steep discount

You’re sure you’ve uncovered the extent of the problem

You know the problem can be fixed

You have a binding written estimate for the repairs

5. Check the cost of financing

Be sure you have enough money for a down payment, closing costs, and repairs without draining your savings.

If you’re planning to fund the repairs with a home equity or home improvement loan:

Get yourself pre-approved for both loans before you make an offer.

Make the deal contingent on getting both the purchase money loan and the renovation money loan, so you’re not forced to close the sale when you have no loan to fix the house.

Consider the Federal Housing Administration’s Section 203(k) program, which lets qualified purchasers wrap up to $35,000 into their mortgages to upgrade their home before they move in.

6. Calculate your fair purchase offer

Take the fair market value of the property (what it would be worth if it were in good condition and remodeled to current tastes) and subtract the upgrade and repair costs.

For example: Your target fixer-upper house has a 1960s kitchen, metallic wallpaper, shag carpet and wood shake roof. Your comparison house, in the same subdivision, sold last month for $500,000. That house had a newer kitchen, no wallpaper, was recently recarpeted, and had a newer composition roof. The cost to remodel the kitchen, remove the wallpaper, carpet the house, and put in a new roof is $50,000. Your bid for the house should be $450,000.

Ask your real estate agent if it’s a good idea to share your cost estimates with the sellers, to prove your offer is fair.

7. Include inspection contingencies in your offer

Don’t rely on your friends or your contractor to eyeball your fixer-upper house. Hire pros to do common inspections like:

Home inspection. This is key in a fixer-upper assessment. The home inspector will uncover hidden issues in need of replacement or repair. You may know you want to replace those 1970s kitchen cabinets, but the home inspector has a meter that will detect the water leak behind them.

Another common inspection done in our area is a pest inspection. The pest inspector will check for moisture, leaks, fungus or any signs of infestation.

Most home inspection contingencies let you go back to the sellers and ask them to do the repairs, or give you cash at closing to pay for the repairs. The seller can also opt to simply back out of the deal, as can you, if the inspection turns up something you don’t want to deal with.

If that happens, this isn’t the right fixer-upper house for you. Go back to the top of this list and start again.

Copyright 2010 NATIONAL ASSOCIATION OF REALTORS®