Best to Combine Listing URLs? Are 300 Listing Pages a "Thin Content" Risk?

[Kingalan1]

We operate www.metro-manhattan.com, a commercial real estate website. There about 550 pages. About 300 pages are for individual listings. About 150 are for buildings.

Most of the listings pages have 180-240 words. Would it be better from an SEO perspective to have multiple listings on a single page, say all Chelsea listings on the Chelsea neighborhood page? Are we shooting ourselves in the foot by having separate URLs for each listing? Are we at risI for a thin cogent Google penalty?

Would the same apply to building pages (about 150)?

Sample Listing: http://www.nyc-officespace-leader.com/listings/364-madison-ave-office-lease-1802sf

Sample Building: http://www.nyc-officespace-leader.com/for-a-new-york-office-space-rental-consider-one-worldwide-plaza-825-eighth-avenue

My concern is that the existing site architecture may result in some form of Google penalty.

If we have to consolidate these pages what would be the best way of doing so?

Thanks, 
Alan

[julie-getonthemap]

Thanks very much. It was easy to set up.

You put your contact info in the description area. Sometimes Google will pick up the description word for word for the serps.

I got the items from past sales at Trulia, but you could easily put your own listings up.  Or you could use Trulia, then put your own live listings at the top, remove them after they've sold.

In each pin's description, even the ones from Trulia, you can put your own description, including a link back to your website.

Pinterest used to pass on page rank, but it no longer does.

Throw a bunch of anchor text links and Voila! there you are.

I have lots of different Pinterest pages ranking.  I have a huge Pinterest following, so that might help, but I have seen small followings rank also.

[Kingalan1]

Your Pinterest page looks very good. And apparently, it ranks very well. It is the first really effective use of Pinterest I have seen in the real estate industry. Was it complicated to set up? It is something I would certainly be interested in exploring. Could it be done in a manner that could also help improve my website's ranking, say linking back to the site?

In terms of our website, do you think it would be best to set the 350 listing pages  to "no index, not follow"? Or alternatively, is there a way I can use the listing content to improve my rankings? For instance,  if the listings were short descriptions placed on neighborhood or building pages, would that stronger?

[julie-getonthemap]

I would definitely recommend consolidating. Currently you're competing against yourself - if 2 properties are in the same neighborhood, they'll both rank poorly because you're not sending all your juice to the same place.

I created a Pinterest board with pins displaying a particular type of home (Craftsman Bungalow) in Sacramento and it ranks on page one. I did it as an example for realtors on how social media can give them multiple rankings on a page.

It's not all that exciting, but if I were a realtor I think I could make it sing! https://www.pinterest.com/juliemarg/craftsman-bungalow-homes-for-sale-in-sacramento/