C.T.
http://www.cde.state.co.us/early/early.htm#childfind
http://www.cde.state.co.us/cdesped/download/pdf/CF_Direct...
Hi L. - I would encourage you to go through ChildFind for speech therapy. It is state dept. of education program that is absolutely FREE to you and there are no income restrictions. The evaluation and the weekly sessions are free to you.
Above is a link to a Colo. Dept of Education site that lists information about Child Find and the second one is a directory of all the Colorado offices - choose the one that is in your school district. They help identify kids between 18mos and 6 who may have speech or other developmental problems. You can have your son evaluated by a certified speech therapist and behavioral therapist at no cost to you.
They have 2 programs - one for kids between 18mos and 2years and 3-6yrs. The younger kids receive speech therapy in a home setting, the older kids are in a small group/play group setting. My niece is 4 and she attends a play group setting and has a lot of fun. A friend here in Parker just called Child Find because her 4.5 year old daughter is still having trouble with L's and R's. She wishes she had called sooner but didn't know about the program until I mentioned what was happening with my son.
I had my son evaluated just before his 2nd birthday. It has been 6 months and he has progressed well and looks forward to meeting with our speech therapist every week. We also have an "advocate" through Developmental Pathways that we can call on in case we have questions or concerns or if we need help with additional services.
Great program!
edit: Developmental pathways also coordinated a free hearing test for my son as well. We actually had the test performed twice.