The ground floor was redesigned for retail units, while the upper floors were converted into modern, open-concept office spaces.Modern Amenities: Introduced features like energy-efficient lighting, upgraded HVAC systems, and high-speed internet infrastructure.Aesthetic Upgrade: Refreshed the façade with contemporary materials while preserving historical elements to maintain its character.OutcomesIncreased Occupancy: The property went from 40% to 95% occupancy within six months of renovation.Higher Rental Rates: Upgraded spaces commanded rental rates 30% higher than before.Enhanced Property Value: The property's appraised value increased by 50% post-renovation.Investor's ROIBy investing in smart architectural design, the investor not only revitalized a neglected property but also significantly boosted their ROI through higher rental income and property appreciation.

Miami FL mostly for this strategy since rents are so high and land is so high we have 2 infill I'd love to know if you've done this 

The house includes high-end upgrades such as custom cabinetry, granite countertops and energy efficient appliances.

You will need to make sure that are no gaps in windows, doors, etc and that the HVAC system is well maintained as a tenant could argue that lack of remediation is the culprit for a high utility bill.

Fees seem high but could potentially be worth it.

Where I have seen "open concept on the way out" is in the very high end properties.  

This was a highly successful transaction.

They’ve already made a name for themselves in Mexico with projects that blend eco-friendly practices and thoughtful design, and now they’re bringing that expertise to one of the most popular markets in the U.S.For investors, this could be an exciting opportunity to work with a developer who consistently delivers quality and strong returns.Check it out:  Travel weekly by Northstar

Dwelling (Building coverage)The limit should be based on the Replacement Cost of the building (cost to rebuild withthe same kind and quality excluding the foundation)2.

It can be done but it may take years to build up cash flow especially if you live in high cost area like CA.