Concerns such as the home value decreasing, 24/7 humming noise, increase water bills, increase electric bills and other environmental concerns in regards to health. 

Ask Me About Certified IAQ/IEQ/Licensed Environmental Assessors And Qualified Real Estate Pros..

We just don't know the environmental impacts and ignorance is bliss.

., daily cleaning), in December 2024 and placed it in service in May 2025.I've encountered conflicting information about the OBBBA’s cutoff date for 100% bonus depreciation:Some sources suggest the property must be both acquired and placed in service after January 19, 2025, making it ineligible due to the December 2024 purchase (and thus limited to 40% for early 2025).Others indicate that the placed-in-service date (May 2025) determines eligibility for the 100% rate, regardless of the acquisition date.I understand the structure (likely 39 years as nonresidential real property) is ineligible, but components like furniture and landscaping (5-15 years) may qualify with a cost segregation study.

You can take bonus depreciation on any property that has assets that qualify.So to answer your question, yes, you can take bonus depreciation on components of a house that is used as a MTR.However, what you may want to determine from a conversation with an accountant is whether the activity will be treated as active or passive.The next question would be, even if you can do a cost segregation study, would the added depreciation from bonus depreciation be beneficial.

A good civil engineer and architect can often point out issues, but sometimes they are a bit silo'd in their view, and overlook things like environmental. 

Either way, @Josh Green is in your neck of the woods and will be a critical component to having on your team.

Only one component amongst many others.

Converting to a triplex = permits, zoning, and utilities.Before you fall in love with that plan, confirm the zoning actually allows for triplex or multi-unit conversions and that adding a 4-plex later won’t trigger new infrastructure or environmental requirements.

What are some important components I should consider?