Live in one unit and rent out the others to cover your mortgage.Seller Financing: Negotiate terms with the property seller where they act as the lender, often requiring a smaller down payment and bypassing traditional underwriting.Partnerships or Joint Ventures: Partner with an investor who provides the capital in exchange for a share of the property’s equity or income.Lease Options: Use a rent-to-own agreement, which allows you to control the property while saving for a formal purchase.BRRRR Method (Buy, Rehab, Rent, Refinance, Repeat): Acquire a distressed property with short-term financing, rehab it to increase value, rent it out, and refinance to recoup your initial investment.Pro TipStay in close communication with your lender as you approach your next purchase.

I see you mentioned the BRRR method, here's a nice breakdown of it here on Bigger Pockets.   

@Jewell ArceneauxHow to drive ARV (my opinion)Improvements that drive the ARV the most: Roof, New Kitchen & Bathrooms, Flooring, PaintImprovements that DON’T drive the ARV as much: Windows, Landscaping, Driveway, Rough Plumbing & Electrical

Is this a common method or not?

Check out this BP article about how they come into play with the BRRRR method.

Strategies like house hacking, the BRRRR method, and long-term rentals have worked well for me.

Unlike a kitchen or bathroom renovation your literally building a second house on the property and your dealing with everything from grading, soils, foundation, electrical, plumbing, framing etc.

Here are a couple of methods of pipe replacement that I am aware of you might be interested in looking at.https://www.youtube.com/watch?

We are a team of five employees, and our work involves renting land for a number of years, designing and developing buildings, and managing them—including renting and maintenance.It’s an exciting yet challenging new chapter in my professional journey, and I’m eager to learn and grow alongside all of you.One of my key goals is to modernize our company’s workflow, which is currently reliant on traditional pen-and-paper methods. 

You can also use the Enemy Method to check the rates of your competitors.