I would suggest completely bidding out every phase of the project with multiple subcontractors for each aspect of the project: surveying, excavating, spetic (if applicable), well (if applicable), foundation, framing, doors and windows, hvac, plumbing, electric, windows, insulation, drywall, siding, masonry, roofing, roof drainage, flooring, cabinetry, trim, appliancees, flatwork, etc. and make sure that the subs give you their quotes in writing and that their quotes are responsive to the scopes of work that you have defined for each of them. 

I think you will find that glass blocks are usually not considered windows, but rather masonry and, as such, there is no requirement for them to be operable.

@Ryan Schumacher I am not super familiar with the area you are in but Im in Mid Coast Maine, Im a Masonry and Roofing contractor, as well as rental investor.

Total With Flood Coverage:$567.00Includes Flood Premium: $100.00Total Without FloodCoverage: $467.00Hurricane Premium: $147Non-Hurricane Premium: $393Nonrefundable Assessments and Fees: MGA Fee: $25EMPA Fee: $2Geocoding InformationResponding Fire District: JACKSONVILLEProtection Class: 01BCEG: 99Distance To Coast: 99,500.00General Risk InformationConstruction Type: Masonry 100%Year Built: 1952Fire Hydrant Within 1,000 Feet of Home?

-Currently renting upstairs for $1,100-3 Story Masonry + a Lot.Good Luck...

I'm seeking referrals for foundation layers and masonry (block) companies.

Completing 8 duplexes with masonry exterior plus a road network including drainage is the closest experience i have in residential construction.

He showed me a spot above the garage door where he proudly told me it took him 3 coats of paint to cover the water stains.It turns out this whole community has a builder defect that involves the fascia and the sealing of the "envelope" - still not sure what that means but basically water has encroached in between the masonry and the concrete block and staining is noticeable over the overhead garage door and only on that wall.

block homes are built from concrete blocks or CMU Concrete masonry units.

Hi Robert,I'm not in the market for  a duplex in Pittsburgh, but I did a quick mockup of some of my thoughts about it.Just a little brighter, and some masonry and lighting to improve the curb appeal (a little).Looks like a Class C or D area.it looks like it may have had a store downstairs at one time.Zoning might allow a liquor store or something.Good Luck!