with $100,000 down, monthly payment on a 15 year mortage

For a $100,000 loan, the 15 year fixed payment is $727.22/month Principal and interest

based on a 3.75% interest rate

Much more info would be needed.. and current laws makes it near impossible to just shoot out a payment without doing a full pre-qualification.. besides, if you put $100K down on a $100K home, there will be no payments.. if you put $100K down on a $1M home, you wont get financing since most would require 20% or more down.. credit scores, job, income, debt ratios, etc, etc, etc.. your question is impossible to answer, and even if you did provide the info on this post, no competent loan officer with any integrity would quote, and anyone that did is probably someone you wouldn't want to use.. you would be setting yourself up for disappointment.. If you want to know for sure, then the best advise I can give you would be to contact a LOCAL mortgage broker and apply with them. Once they see your complete loan scenario, they will be able to put together a written quote so you will know exactly what to expect.. Also, by applying with your LOCAL Broker, you have an advantage because he's familiar with local customs and works with numerous lenders, seeking out the best loan terms for your particular scenario. Because he has lower overhead, he can offer you lower rates and lower fees than most of the larger lenders.. I'm a Broker here in Scottsdale AZ and I only lend in Arizona. If you or someone you know is looking for financing options, feel free to contact me or pass along my information. William J. Acres, Lender411's number ONE lender in Arizona. 480-287-5714 WilliamAcres.com

More information is needed to answer this question, including what the loan amount is.