Is there a timeline when the property has to be developed by, including barn and green house?
Yes. You have 3 years from the time of signing. You have 6 months to submit your plan of transition. This includes size of house, budget, where are the funds coming from, other resources, etc.. You have 2 years from time of signing to submit blueprints and full building permit. Afterwards you have another 12 months to finish your house and get your certificate of occupancy. That includes the greenhouse and the barn. The greenhouse needs to be a minimum of 600 square feet. Later down the road, if you want to add on or build bigger, you will need to submit new plans so that everything is done to code.