Certain eligibility requirements may restrict you from receiving rebates on the work for both homes. For example, the federal Residential Renewable Energy Tax Credit only applies to upgrades made on your primary and secondary residence, rentals do not qualify. So you will receive a tax credit for the geothermal heat pump installed on your home but not the home your son rents. However, if he isn't actually renting from you, you may still qualify.

Also, whether or not you're technically your son's landlord, you may still be eligible for some Maryland and local utility rebates, but you will need to call the program administers to find out what the restrictions are. You may find that you will be better off waiting until your son buys the home so that he can take advantage of the rebates and tax credits.

Some programs to look into include:

• Sales and Use Tax Exemption for Renewable Energy Equipment


• Geothermal Heat Pump Grants


• Clean Energy Production Tax Credit