All things are relative with regards to any lease that is the so called " net" format vs those that are " gross" or " modified gross" .
The term net lease has been chopped up over the years to include " net - N" , " double net - NN" , or " triple net - NNN" .
N - generally refers to the actual property operational maintenance costs.
NN - generally refers to the property maintenance and limited other costs, i.e. adding in insurance or RE taxes or some other limited set of items.
NNN - generally refers to all associated property operational costs.
For clarification a " net lease" means that the tenant is fully responsible for some or all of the property's operational items; On the other end of the spectrum is the " gross lease" which means that the owner is fully responsible for the operational items; " a modified gross lease" is a combination of the two and usually includes an expense stop for the tenant.
Expense stop means the owner is responsible for all costs up to that point, i.e $3.75 per sf per year, and the tenant is responsible for the pro rata difference over that amount. So if the budgeted or actual expenses for the year were at $4.95 per sf, the tenant would be responsible for $1.20 per sf or $0.10 per sf per month.
If you are an out-of-area investor and do not invest the time to monitor your investment property, you are going to lose in the long run and may lose in the short term.
Reason being, even if the property is a Net lease, whether it is single, double or triple net, who is to say that tenant will actualy maintain the property to the same standard that you desire.
Secondly, most tenants are not in the real estate business and as such, depend on either the owner personally or his property manager to take care of the issues relating to the ongoing maintenance of the property.
Who are you going to call at 2 am in the morning when someone finds water all over the floors and flowing into the streets? Most tenants do even have a clue where the water shut-off valves are, let alone which vendor to call to clean up the mess.
If the owner is attempting to handle the property themselves, how are they going to be able to respond from several hundeds of miles away, or have the relationship with the vendors to get a timely response.
Good property managers can save owners a lot of money, and at the same time keep the existing tenants happy so that they will renew their lease. It costs a lot less to keep a tenant than it does to get a new one.
What tenants will do is pay for the maintenance to be done for them via monthly CAM payments (Common Area Maintenance). CAM payments ussually consists of all costs relating to the operations, but not the capital improvements of a property, including but not limited to, RE Taxes, Insurance, maintenance, on or off-site property management, and in some cases, off-site asset management.
With such CAM programs in place along with a good local property manager, AND properly supervised by the owner, the investment property should bring a reasonable and good return on his investment.