What Makes A Townhouse Worthy Of It's Price?

What's your price range?

they tend to be too dark, unless it's in the corner or the closest to a 21f wide one. they can be a $ pit if you are unlucky to have water issues with the roof (couple of friends have this) or if your neighbor decided to do a gut reno and damaged your wall... having good neighbors and well maintained are key. a roof garden has to add value as their backyards tend to be rather small.

According to some it's length, according to others girth.

ok..

The LOCATION of the townhouse determines it's price. LOCATION LOCATION LOCATION

After location, the width determines its value.

1. elevator
2. garage
3. dumbwaiter to roof garden

Style, beauty, history, quality renovation, location (of course), light, historic district, gardens, working fireplaces, terraces. Low rises like townhouses contribute to a sense of neighborhood and community.

I doubt dumbwaiters have much of an impact on the value of the townhouse.

"According to some it's length, according to others girth."

Hey, hey, hey...30yrs, I am not sure that information has anything to do with RE. Oh...wait a minute....

Let me add to my earlier list.

Privacy is certainly an advantage.

In addition, townhouses come in many styles such as Federal, Greek Revival, Italianate, and traditional brownstone. Each has its pluses and minuses.

Generally a "stooped" townhouse is worth more than one whose stoop has been removed in order to make "hallway" space "living" space.

I presume original detail plays a role as well. In addition to what others have mentioned, I would look for a TH that has been as well preserved as possible (not chopped into 10 units, etc). I believe, but could be wrong, that when preservation gets high marks, so does the price tag.

allonfla - if you're seriously interested in purchasing a townhouse, you may want to check out this website http://www.townhouseexperts.com/premierservices.asp and also Brownstoner.com (I'm not that familiar w/ the latter but others have recommended it before).
At townhouse experts you can sign up to receive various bits of information. I do recall receiving a page or so about how townhouses are priced. Unfortunately, the only thing from the list that sticks out in my mind is that stand alone TH's are valued less than those in a row of TH's (I actually find the stand-alones quite charming).

Brownstoner is also a good website.