Denver does require a minimum 30-Day lease unless you have obtained a short-term leasing license. It is unlikely that the City is investigating to determine if a Landlord enforces the full terms of his lease. However, should the City investigate your rentals because they have information that the rentals are being operated in a short-term fashion, your scheme is unlikely to be as bullet-proof as you may think. If you wish to discuss this in more detail you should contact us to coordinate a free case assessment with one of our Landlord attorneys, You can schedule a free case assessment 24/7 by calling 303-688-0944 or online