After the construction is over there will be no loan, just cash flow, which would results appx. in 10% after all other costs deducted.

For newly constructed, purchased or renovated properties and also retroactive generally over the last 10 years, building components are properly classified into individual units of property and accurate recovery periods for computing depreciation deductions.

Here are some options and considerations:Loan Against Equity/ETFs:Margin Loans:Description: Margin loans allow you to borrow money using your investments (such as stocks or ETFs) as collateral.Pros:You retain ownership of your investments.Generally quick access to funds.Interest rates can be relatively low compared to other types of loans.Cons:Your investments are used as collateral, so if their value declines significantly, you may face a margin call (requiring additional funds or securities).Interest rates can vary and may be higher than traditional loans depending on the lender and your creditworthiness.Securities-Based Line of Credit (SBLOC):Description: Similar to margin loans, SBLOCs use your securities (stocks, ETFs) as collateral, but they typically provide more flexibility and may not trigger margin calls as easily.Pros:Allows for ongoing access to funds as long as your collateral remains sufficient.Interest rates may be competitive.Cons:Similar risks of potential margin calls if the value of your securities drops significantly.Terms and interest rates can vary widely among lenders.Comparison with 401(k) Loans:401(k) Loans:Description: Borrowing from your 401(k) allows you to access funds without selling investments, using your retirement savings as collateral.Pros:Typically low interest rates.No credit check required.Interest paid on the loan goes back into your 401(k) account.Cons:Usually capped at a percentage of your vested balance (commonly up to 50% or $50,000).If you leave your job, the loan may need to be repaid immediately or could be considered a taxable distribution.Potential opportunity cost of missing out on market gains if funds are withdrawn from investments.Other Alternatives:Home Equity Line of Credit (HELOC):Description: If you own a home with equity, a HELOC allows you to borrow against that equity at typically lower interest rates than unsecured loans.Pros:Lower interest rates compared to other types of loans.Interest may be tax-deductible if used for home improvements (consult a tax advisor).Cons:Your home serves as collateral, so failure to repay could result in foreclosure.Personal Loans:Description: Unsecured personal loans can be used for various purposes, including investing, but typically have higher interest rates than loans secured by collateral.Pros:No collateral required.Funds can be used for any purpose.Cons:Higher interest rates and stricter eligibility criteria based on creditworthiness.I am a loan officer and we do some of the loans stated above.

Hiring a Manager: Decide whether you'll manage the property yourself or hire a property management company.Tenant Screening: Develop a tenant screening process to find reliable renters who meet your criteria.Legal and Tax Considerations:Legal Structure: Consider forming an LLC or another legal entity to protect your personal assets.Tax Implications: Understand tax deductions available for rental properties, including mortgage interest, property taxes, and depreciation.Networking and Education:Real Estate Forums: Participate in forums like this one to learn from experienced investors and ask questions.Local Real Estate Groups: Join local investor meetups or associations to network with professionals in your area.Continued Learning: Attend seminars, webinars, or workshops to stay informed about real estate investing strategies and market updates.Starting with a rental property while keeping your condo as an investment is a great way to begin building wealth through real estate.

Would I be able to deduct depreciation against my personal w2 income without having rental income for the year? 

They may ignore it or they may deduct less for no central hvac than having window units?

Q2: If I sold the new property in the future (after living there for at least 2 years) would it again be considered a primary residence and get the 250k cap gains deduction?

Mortgage Interest Deduction: You can deduct the interest paid on a mortgage used to buy, build, or improve your home.4.

I've done this to save some money on the commission side of things by deducting the amount I would've gotten paid from commissions off of the purchase price of the property. 

The tax on income is approximately 12%, and when federal and state taxes are considered, let's say 6%, this will leave around $1500 after tax deductions, not accounting for expenses or potential depreciation refunds from tax planning.