It is just less likely you will find the needle so to say. Condos and Townhomes are managed by HOA so the exteriors are always going to be kept in good shape. In Orange County where prices are so high you cannot really add square footage except by extending a loft or something to that matter. Where on an SFR there are more possibilities. So then you have more angles to present to would be investor buyers. Also, condos and townhomes have almost identical characteristics so if a model match just sold for 500k. It could be very hard to justify a low ball offer. Your best chances are older areas where homes get in disrepair and other homes have had extensive remodels.
It really depends on what exactly you are looking for. Besides a good deal obviously. Everyone wants that. If you are marketing to potential short sales. Most likely your only angle nowadays in Orange County. Then it could work.
How are you marketing? That could help provide a better answer. Orange County will be difficult.
Those would be a little tougher to sell, but I would say if you are focused on wholesaling you could define that skill within condos and SFR. Define wholesaling as a skill and make the pool of prospects bigger by hitting SFR and Condos. This could be your focus and it allows you gather your in-depth knowledge of Orange County.
You can even define it by wholesaling SFR and Condos within North Orange County, which is your neck of the woods.
Yes I would stick with SFR in areas without HOA. Stay away from Aliso Viejo and Irvine. I would say make sure the list is of homes built prior to 1980.