It's understandable that unexpected things arise sometimes, especially when you're opening up walls or dealing with older electric or plumbing.

We also had just a recent problem with plumbing due to tree roots.

If one or more units are vacant, the remaining units often don’t provide enough cash flow to cover expenses, making it harder to meet operating costs.Maintenance costs: A fourplex comes with four times the appliances, plumbing, HVAC systems, and other components to maintain, leading to significantly higher repair and maintenance expenses than single-family homes.If you want to see the detailed calculation, read this BP blog - More Units Doesn’t Mean More Money—Why a Single-Family Home Can Beat a Fourplex.Resale value: Multi-family properties have a limited buyer pool—mainly investors—who base their offers on CAP rates.

@Sophanara Khoeun For significant repairs like foundational issues, plumbing, and electrical updates, hire specialists (e.g., structural engineers, plumbers) for precision, or a general contractor for coordination if the scope is broad.

Do you have a a significant budget to get plumbing, electrical, mechanical, etc to the building? 

I do plumbing inspections on the way in, along with full home inspections, and sometimes we do a pre-sale home inspection on the way out before the sale and we offer that as part of the listing package.

During your initial walkthrough, inspect the property for any major issues such as structural damage, roofing problems, plumbing, and electrical concerns, while documenting all cosmetic and functional issues with detailed photos and notes.Once you confirm the property’s potential, finalize your ARV and calculate the repair costs using either a reliable estimator or insights from contractors.

The structure for this is a discounted sale, lease back, buy back.One of the partners is a qualified intermediary as well that understands the plumbing behind it to make it 1031 compliant.If you have any questions on that - feel free to give me a buzz.

Plumbing is historically one of the most difficult things to fight since age and the structure matter so much and it is nearly impossible to pinpoint one issue that caused the damage. 

It could be stressful if there is a plumbing or heating issue and you're several hours away.