It appears roof failed, leaked for a long time.

I'm afraid skylights might leak or increase the cost. 

There were no visible signs of  leak above the ground.

It started with the "heartbreaking" single family houses, full of run down yards, overgrown trees, ceramic sewer pipes, leaking galvanized water pipes and Cochroaches throughout.

Scope of Work:Initial Assessment: Our team conducts a thorough assessment of the property to evaluate its current condition, identify structural issues, and determine the scope of renovation required.Design Concept: Collaborating with architects and designers, we develop a design concept that blends contemporary elements with the historic character of the row house, maximizing space utilization and optimizing layout efficiency.Structural Repairs: Structural repairs and reinforcements are undertaken to ensure the integrity and stability of the building, addressing any foundation issues, roof leaks, or structural deficiencies.Interior Renovation: The interior of the row house is completely renovated, including the removal of non-load-bearing walls to create open-concept living spaces, installation of new flooring, upgrading electrical and plumbing systems, and installing energy-efficient fixtures and appliances.Kitchen and Bath Remodeling: The kitchen and bathrooms are transformed with modern finishes, custom cabinetry, quartz countertops, and high-end appliances, creating functional and stylish spaces for daily living and entertaining.Historic Preservation: Special care is taken to preserve and restore original architectural features such as exposed brick walls, decorative moldings, and hardwood floors, enhancing the property's historic charm and character.Exterior Enhancements: The exterior of the row house receives a facelift with fresh paint, repaired masonry, restored windows, and landscaping improvements, enhancing curb appeal and contributing to the overall aesthetic appeal of the neighborhood.Quality Assurance: Throughout the renovation process, our team adheres to strict quality control measures and standards, ensuring that workmanship meets or exceeds industry best practices and building codes.Finishing Touches: The finishing touches, including interior decor, lighting fixtures, and hardware, are carefully selected to complement the design aesthetic and create a cohesive and inviting atmosphere.Timeline and Budget:The single-family flip project in the Philadelphia row house is estimated to be completed within [timeline], with a budget of [budget].

Finding maintenance issues prior to them becoming a larger problem (water leaks, pipes, roof etc.).

@Andrew Steffens for Tampa@Ryan Leake for Austin I have a contact in the Miami area, so DM me if you're interested.

After inspection, we discover there's drywood termite damage, moisture/water leaks seen from the attic and ceiling, roof doesn't have a permit with old patches.

When viewing potential purchases pay attention to any damage such as cracks, leaks or structural issues; you may want to hire a professional inspector for extra assurance.

I expect all basements to leak At some time or another even Those that are not leaked in 100 years.