I recycle equity to scale up.

Then later build some tiny houses with solar power for electricity/water heater and somehow collect rain water for recycling/filtering/growing food.

You'll want to recycle heavier items like beams, studs, siding and concrete.

I like using HELOCs since you're essentially recycling money that's tied up in the house doing nothing otherwise.  

We are recyclers.

, forget to put out basic supplies, lose the key, forget to greet the guest or hire the housekeeper, neglect to collect payment, lose the lease, forget to remind guests to take out garbage or separate recycles, don't replace broken furniture, dishes, worn linens or even bulbs, neglect to notice and charge for damage, and none came close to getting the number of bookings I get on my own. 

But I can't see it actually making up for the extra interest (and fees) you pay on the HELOC, which you don't have to pay if you simply make the extra payment on principal from your paycheck.As for the statement that what you pay from your paycheck is gone, and the HELOC instead makes money available for emergencies or investing as you recycle paying it off every so many months, well, there's a simple remedy for that: Take out the HELOC and just do not use it except for those emergencies or investments.

Maybe google "recycled countertops".Some great articles show up giving you pros and cons.Could even be an extra selling point, going the eco route step by step.

Intel is a great example, who is building the largest chip manufacturing plant in the US right here, and it will be a $20 billion dollar investment that brings a few new thousand jobs.https://www.dispatch.com/story/business/2022/01/21/intel-ohio-building-computer-chip-factories-licking-county-jersey-township/9173472002/ Another example of economic growth is the upcoming Ohio State University Wexner Medical Center Inpatient Hospital which is a 1.9million square foot hospital that will bring over 800 new beds and a thousand new jobs. https://abc6onyourside.com/news/local/new-osu-hospital-expected-to-transform-health-careHere are a few more recent investments https://www.10tv.com/article/money/business/hydrogen-power-company-hyperion-bringing-700-jobs-to-columbus/530-25907aab-5517-4661-a9f3-d2ed2d5be6b0 https://news.wosu.org/news/2022-02-08/rumpke-to-build-50-million-recycling-facility-in-columbus Check out The Complete Guide to the Columbus, Ohio Real Estate Market which goes through the Columbus, Ohio market in depth and will give you a better scope of where the highest levels of growth are taking place and where to look to invest.

When you are going to refi to recycle your capital, you are going to have even more of an issue.