A frequent business type near D Harrington is Operators of Rental Apartments .
A local Employment Agency can assist with anything from graduate to executive positions. Only a stone's throw away you will fidn a choice in management consulting firms. The area's Investment Advice firm can advise on investments, savings and trading. For advice with tax or credit there is a local accountant who can help.
There is a Jewelry Store nearby. If you are hungry there is a restaurant serving the area.