Dear Shirely,
Once upon a time there was a young bull and an old bull standing on a hill looking down into the pasture at a herd of cows. The young bull snorted to the old bull, "lets run down there and get one of those cows!" The old bull slowly turned his head and said...."lets walk down there and get them all".
According to the Board of Real Estate Appraisers for the State of Colorado, the biggest problem facing the industry right now is YOU. Under trained, under supervised hot shot new appraisers who believe they have stepped into the promised land. Trainees doing 3 to 5 assignments A DAY with no regard to what they are doing. They have never met a property they couldn't appraise at what ever the lender NEEDS FOR VALUE and turn in the report in 48 hours. There is a lot more to appraising than rushing madly from house to house filling out a form.
By your own admission, when you slowed down long enough to catch your breath, you did a form of research to support you site adjustment. It is called the "extraction method" and is a form of paired sales analysis. All of your adjustments should be market driven and supported by data either in the appraisal report or the appraiser's work files.
You are young, hungry, and aggressive. Nothing wrong with that except sooner or later you will older and less hungry and agressive....I hope. Don't burn yourself out chasing the Almighty dollar or worse yet come foul of the law because you cut too many corners. The ASB is working now to put a stop to the kind of operation you have indicated you work in. Soon, only certified appraisers with years of experience and a good track record will be able to train newbies. Why? Because of operations like you have said you work in.
I may be old and I may be slow but I have been doing appraisals for over 24 years and have a track record I am proud of. Never been before the board of appraisers, never been in court except as a witness. I also teach the registered appraisers course for a local real estate college...we see many people just like you in the school, looking for the goose that lays the golden egg. Unfortunately too many of them get their goose cooked ... all in the name of speed and trying to satisfy a lender who could care less if you end up fined, license revoked, and even possibly in jail. Why? Because they can just go down the list and find another "Skippy or Skippette" who is willing to become YOU.
I wish you well!