Hi S. -
I know that you have already gotten a ton of responses... but I thought that I would add my two cents...
My husband and I have done 2 yard sales in the past 2 years, and have made $1000 on the first and $800 on the second. So, I thought we did pretty good.
Some Suggestions:
Have the yard sale start at either 8 or 9am and go til 3pm. You WILL have early birds even if you say, no early birds please... but dont turn down a sale either. My husband and I were up at 530am getting everything ready, and should have gotten up at 5.. so however early you think you should get up, get up a 1/2 hour earlier or more.
Make sure that you have TABLES!! if everything is strewn out on the ground, people wont stop, they dont want to bend down and look, they want to see it waist high. We begged borrowed and used picnic benches and sheets of plywood to make more tables. And this may sound silly, but put table cloths on. The better it looks driving by, the more people you will have stop. PRESENTATION IS KEY!!
Price EVERYTHING! I tried doing it the first time by doing the colored dot way, where if it were a red dot it was a doller, etc. I got asked how much stuff was ALL the time. It was so much easier when there was an actual price on it. Dont price anything that is not divisible by $0.25, that way you will only need quarters for change.
Have a waitresses apron (one that holds money) that way the money is always with you, then have a box that is inside in a safe place when you collect too much money. Do not have the money just sitting out in a box. Do not take checks.
Advise on what to sell: Clothes dont sell well unless it is a really nice thing like a leather jacket. I got more on my tax return by donating it and itemizing it than I would have if I had sold it at the yard sale. Believe me, I tried clothes 2 times... and that always got neglected. Baby items, Antiques are real eye catchers.
If you have kids toys that have a lot of little pieces, put them in a bag so that they dont get lost. The same for puzzles. Cribs, strollers, car seats are always good sellers. People are always looking for their grandchild etc.
If you have any large items (furniture, etc) if you have a trailer, offer delivery for up to 5 or 10 miles for an additional $5 or $10. We sold a living room set, and the couple were like, oh, we would love it but dont have a way to get it there... for an extra $10...we brought it there to them. Just make sure the delivery is for AFTER the yard sale is over... dont do it during unless you have a few extra people to help you at the sale.
Get a big jug/cooler of Water or Lemonade and give that to people. Both of my yard sales were in the summer, and of COURSE were the hottest days (95 and humid)... the water/lemonade was just a nice gesture... (just get the cheapy little dixie cups) make sure you put a trash can next to it or you will be picking up tons of cups!
Make signs for the yard sales... and VERY LARGE signs. I used large boxes to make the signs with Black Permanent Marker. Put on it the Date, Time, Address and somethings that you are selling!! People who make signs on a 10x8 piece of paper are not going to draw a crowd because people cant SEE it!! Make sure that you have enough signs so that people can find their way to your house too. Biggest suggestion... TAKE THEM DOWN WHEN THE YARD SALE IS OVER!!! People hate getting excited when they see a yard sale sign only to realize that it is passed! :)
Post it on Craigslist, put it in your local paper. Post it on Craigslist the day before... that way people wont have to scroll down so much. Make sure that you put the time, address and some things that you are selling (ie... antiques & Baby Items get a TON of people to come!!)
Have an option if it rains... Before you post it in the paper, make sure that you check the forecast... if there is a 20% chance of rain... dont do it.... you dont want to have everything out there, and then get it drenched and ruined. I was ALWAYS on weather.com, accuweather.com, and the local news stations.
DO NOT HAVE YOUR CHILDREN AT THE YARD SALE!!! have some one take them! Or have a baby sitter come. Best bet is to get them as far away from you as possible. It is SO hard to try to work a yard sale with little ones always at your feet saying, I'm hungry.. she hit me.. etc. If you have a close friend who they can stay over night.. that is ideal, because then you will not have to deal with them in the morning. Believe me when I say.. you dont want them there!! IT WAS HELL!! the first time, the kids were 3 & 4, and a neighbor came at like 830am... too late, the kids were killing me as I was trying to set up, deal with at least 10-15 car loads of people... The second time... they were 4-5, and a neighbor watched them. But because I was selling toys.. they got a little bent out of shape and took things OUT of the yardsale lineup!! So, the best bet is to have them stay at a friends/family.
You need to have AT LEAST 2 people working the yard sale.
I agree with someone who said that things will get stolen. Expect it. If there are anythings that are really worth something that are small, then sell them on craigslist or ebay. dont chance having them get stolen. I found that if the things were larger items that were pricey, you didnt have to worry about it.
Categorize your items at the yard sale... put all Baby Stuff on one table, all antiques on another, electronics on another. It really makes the customer feel like they are in a store, and makes them want to buy more.
Make sure that you have shopping bags available. Start saving up those grocery store bags so that people will have something to put there loot in after they buy it. Rather than them juggling everything in there arms and dragging a toddler too!
At the end of the yard sale, because lord knew I didnt want to take anything back in. We had stuffed animals, that we said, stuff this bag and it is yours for a $1. beleive me, unless you want to do this the following year.... try to get rid of it all.
You will have people bargin with you. At the begining of the yard sale... dont go down much. near the end is when the people get the deals, because you want to get rid of the stuff. unless you REALLY have a feeling that you could sell it for more on ebay or craigslist... then take what they offer.
I cant tell you how many compliments (yes, on a yard sale) that I got for it being organized and everything was CLEAN! I polished any silver, everything was washed, nothing was dirty... if it is dirty.. it wont attract the people and you will not get as much for the item!
So.. as you are going through things.... make sure they are clean, price them, then put them in that categories box. and the day of the yard sale, you can set up the tables, and just take everythign out of the box onto one table.
It is a lot of work, but worth it in the long run.
Good luck!!
L.