Be sure to look at their faces upon entering that front door. Whether you've shown them one or twenty homes eventually you'll recognize that expression. A smile is a great initial indicator!

They eagerly obtain their pre-approval, start using our app and tag homes they want to see and then when you tour with them, pay close attention to their body language.

They don't all exclaim, "This is THE one!" - sometimes it's in the questions they ask and/or their demeanor. 

Gut instinct also kicks in for most of us!

I required a pre-approval letter before I would show any property and when I received a pre-approval letter I would always call the lender and have a little talk with them. That talk often reveled a lot of interesting facts. Andrew Cooper keep in mind that if you show homes without a pre-approval you may be showing professional thieves homes they intend to rob making you an accomplice (willing or not).

A house? They and especially the kids start assigning / fighting over bedrooms. They 'mentally out loud' place furniture.

Commercial? They have a deadline.

An opened escrow and wired EMD. Till that moment all is just talking and show-and-tell. 

They bring a suitcase full of cash.

1. I LOVE THIS HOUSE.

2. Here is my Pre-approval at the list price.

3. I CLOSED on my house 2 weeks ago.

4. Everything I've seen so far have been dumps.

Of course, for a typical real estate agent, the time-holes need to be spotted long before this "IDEAL" happens.

Preapproved, clear expectations, anxious to sign.

If they don't mention HGTV shows 

The obvious is the best..... ask them if they want to write an offer. Lots of times they are just waiting to be asked. That and Kevin J. May 's answer.

Lots of signs but it does have a learning curve. More questions you ask, the better or worse answers you will get. It's also a gut feeling.

Ask them point blank, if we see a house today are you ready to buy it?

Are they pre-approved for a loan and ready to go house-hunting.

A pre-approval for mortgage financing is a good indicator.

If they are placing furniture in the home.

If I had a dollar for every buyer or agent that indicated an offer would be coming I'd be living on a South Pacific island...lol

I ask them to get a pre-approval for a loan.  Also I interview them and see what motivates them to get a home.  If they are leasing and their lease is about to expire, that's a good indication that they are serious.  A house that is too small with a baby due in a few months is also a good indication of a serious buyer.  Be foreward of buyers who only want a good deal and have not time frame to purchase.

Like anything in dating. There are little signals that your date is not serious,

When they actually say: Let's make an offer.

I have have plenty of "potential buyers" back off after stating the the are very interested. Until they are will to put pen to paper the is not commitment.

I agree with Joyce Marsh, Luxury Market Specialist .  A

You listened to them and know from the run down of what they want, what they don't and match make. Find them what is the best bang for the buck and you are heading to a real estate closing. A property listing priced right is a beautiful thing too. When the buyer starts talking in terms of the master bedroom sleigh bed will be on this wall, the 64 inch flat screen to watch the Red Sox win another World Series is going to be on that one... you just get a feeling from experience. They don't just love the home, they are in love because waiting around is over. The buyer's facebook, other social media account round robin is announcing the "Hey Dawgs. Look at our new crib bitches" which is another sure ringer dead give away this is the one!

Ask questions and let them fully answer. They will give you the sign it is time.

Ready, Willing and Able to buy! 

Same signs you would have when you go to purchase. That's why it takes one to know one and if not sure, ask questions which reveals it all

Are they:

ready to buy

willing to buy

albe to buy

all you need to do is listen and watch body language plus facial expressions....

When they make the offer. 

Ready, able, and willing to purchase.

When I say- so do you want to do this?& they say- so where do I sign?

He tells you.

They have been pre-approved by a lender.

When they start placing their furniture mentally, or talk about moving day.

Ask them