In most cases, it's probably not worth the effort.Wall insulation:Acoustic insulation: Fill wall cavities with fiberglass or mineral wool insulation to absorb sound.

I have heard 1) That the buyer can just be added as additionally insured on my insurance. 2) That I can be added on as additionally insured on their insurance3) That I need to hold my own insurance and the buyer needs to have their own as well. 

But the fact that you’re here looking for solutions means you’re thinking like a smart investor, so let’s figure out your best move.Is a Sprinkler System Worth It?

I had to rely on my new real estate agent to find another contractor, adding unnecessary stress to the process.The deal I was presented with had an ARV of $120,000, but after the rehab, the appraisal came in at only $92,000, leaving me short by $28,000.

Here is a list of why adding a single ADU in single family zoned areas in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

Not worth my time and piece of mind.

Using 50% rule (expenses excluding P&i is 50% of rent) here are the numbers;1800 (rent) - $900 (expenses) - 1468 (heloc) = negative $568/monthAt your rent point with that size unit, your expenses will ve less than depicted by the 50% rule, so let’s use a likely more accurate 40%1800 - 720 (expenses) - 1468 = negative $388/monthNow let’s imagine you self manage and you time is not worth anything (I strongly recommend believing your time is worth less or worth less than a quality PM would charge) with 8% further reduction so expenses are down to 32%1800 - 576 (expenses) - 1468 = negative $244/month. 

There are also added expenses and financing hurdles to jump through.

The adjustments you’re making—subtracting the old mortgage, adding exchange-related costs, and applying cost segregation percentages—are reasonable, but confirm with your CPA to ensure you're not missing any adjustments.

Recommend you do at least 10 at a time to make it worth the contractor's time.5.