The economics do not allow for a property renovation, properly permitted and all deferred maintenance issues addressed.  

I did have one electrician come and quote it out for about 12k but that didn't include the permits or any costs related to ComEd.

Duplex have different zoning that may permit additional units.

Get permits to build a detached ADU (DADU)/backyard cottage in the backyard3.

We completed the work 2 weeks before our baby was born so we took a 4 week hiatus to rest and have the baby.Then I dove into the design, planning, and permitting for the basement.I visited the local Permit office in Alexandria and basically said, "Hi, I'm a new homeowner and I'm an idiot when it comes to permitting.

It might save you money on labor and give you more control over projects, but it also means taking on more responsibility for permits, inspections, and subcontractors.

Verify STR regulations in Littleton/Denver and secure permits.

Some will give you costs based on no permits, which will likely be lower.  

Postal permit $220 per year.  

Connect with local investors and experts for a house-hacking strategy and ensure proper permits for rental properties.Good luck!