Buying or selling a house is really stressful. For sellers, it seems like you’ve done everything you can to get your house ready to sell, but you wait and wait for offers and then when one does come it’s much lower than your asking price. So you’re left asking yourself what else can you do? Or if you’re a buyer, you worry whether you’re getting a good value or choosing the best house.

Next Sunday, April 13 at 9:00 pm, HGTV is airing a special highlighting the 25 biggest real estate mistakes that people make. Real estate experts will let you know what mistakes you’re making and give tips on how to avoid or fix your mistakes.

So what are the 25 biggest real estate mistakes? Here’s a sneak peak at HGTV’s list:

1. Failing to showcase your home and make small cosmetic changes
2. Setting too high of a sale price
3. Buying what you want, not what you need
4. Overlooking the extra and hidden costs
5. Buying a home without a professional inspection
6. Falling in love with the first property you see
7. Skipping the loan pre-approval
8. Doing major renovations/remodeling before selling
9. Not being pro-active at closing
10. Visiting the house only once
11. Not setting a realistic budget
12. Buying the most expensive home on the block
13. Not hiring an agent
14. Not knowing your agent
15. Trusting everything a real estate advertisement says
16. Buying with actually seeing the property
17. Not thinking about resale
18. Failing to market your home in dfiferent ways
19. Looking at the real estate market as the stock market
20. Waiting until spring to sell your house
21. Trying to make the "hard sell" while showing
22. Losing money with auctions
23. Not researching the neighborhood
24. Not providing easy access for showings
25. Buying the house for its decor