Real estate gain + W2

[Namal Burman]

We have 2 W2s( Me+ Spouse).Have a primary residence SFH and 2 rentals.I have around $40K of rental income after all the deductions/depreciation.This time I used a CPA and I am a sure he tried his best to get all deductions possible. Can you folks suggest what can I do to offset this real estate gain of $40K per year? Should I buy another property in San Diego? Since it won't be cash flow in this condition and may run into loss it may offset my rental income but hoping to build equity and have another investment in my portfolio.What would you folks suggest?