I hear people talk about the "Stigma" of the North Las Vegas war zone constantly on here and I laugh. North Las Vegas has great areas the more North West you go, and maybe its because I own rental properties up here and two businesses up here, so I could be biased, but I've seen much crappier neighborhoods in Henderson then I do in the general area of NLV that I work, live, invest in.
These "boundaries" I've created for friends I've had move here in the Military have slid gradually to the North and to the West over the 11 years I've been here, but here is my rule of thumb for NLV........
West of Losee, North of Craig. Very simple. For the most part you'll be in a decent neighborhood.
North of Centennial and West of Commerce, and you'll be in a very nice neighborhood 98% of the time.
The news of the pig farm is old news and has been known for 6-8 months before it became a news story. I think the houses in that area will increase slightly more than the rest of that "zone" I put you in in the last paragaraph, BUT....That property and the other vacant lots (6 or 7 in that area) will all get flooded with new houses at rock bottom prices through forced development and will attract all your buyers and renters away from the 5-10 year old houses that are existing around the farm.
The other thing is, that $40K will get used up and then some for a 20% DP on the houses in that area as anything decent is $200K plus.
I own a few houses in Las Palmeras at Ann and Camino El Norte. Tons of great cash flow and flip deals in there still with a decent HOA that keeps the "North" out of North Town! ;-) El Dorado Highlands also has some great deals if you're not in a rush. With the expansions of the 215 and making it a much easier drive to the West side of the valley, the new 95/215 on and off ramps, and the new development across the 215 at Revere will all help keep the NW corner of NLV a hidden gem.
The "stigma" is all in name, or for people that are scared to drive up MLK until the name changes a few times! ;-)