I own rental properties in PDX and have used a number of tree trimming services over the years. Green Scape Landscaping is the best and most responsive company I have used to date. The owner, Ed Harris, is very detail oriented and is very concerned that he listens to what the customer wants, and gives the customer satisfaction. He is knowledgeable and will offer professional advice when warranted, but will defer to your wishes so long as you understand what it is you are asking for. Ed remains in communication with you throughout the process. He follows up, also.
His crew is fast, thorough, cheerful, and prompt. They are careful to be non-disruptive (especially important to me because of tenants). I will use them again and I recommend them to anyone who needs tree service. I would further infer that their other services (scheduled maintenance, etc.) are equally professional.