For 3105 Roanoke Ave in Old Brooklyn, a realistic rent range is about $2.3K–$2.8K/mo for the duplex (roughly $1,150–$1,400 per unit), based on similar Cleveland duplexes and nearby SFR rent AVMs. That’s roughly $27K–$34K/yr in gross revenue. At a $150K basis, payback is in the 4.5–5.5 year range on a simple price-to-rent metric. Old Brooklyn is a stable, solidly C‑class west-side neighborhood, popular with working tenants who like quick access to downtown and the hospitals. Separately metered water/sewer and the renovated lower unit support above-average rent and lower operating drag. The walk-up attic space in the upper unit is a nice value-add for larger households, though the older 1919 construction and lack of central cooling can be minor leasing challenges in hotter months. Overall, this is a straightforward cash-flow play with a good bedroom count, porches, garage storage, and recent renovations that should keep make-ready costs modest in the near term.

To push rents toward the top of the range, I’d tighten up curb appeal (fresh exterior paint accents, porch railings, simple landscaping) and consider adding in-unit laundry hookups plus basic window A/Cs. Those small touches can justify an extra $50–$100 per door. If you’re thinking of selling, stabilize the vacant unit at market rent on a 12‑month lease, document utilities bill-backs, and present clean financials. Cleveland duplex investors pay more for a turn-key, rent-ready story than for theoretical pro formas, especially in west-side neighborhoods like Old Brooklyn.