Property taxes can't be "negotiatied", per se - but they can be grieved. And sometimes negotiation is involved in the grieving process. There is ONE grievance day a year for taxes, and a deadline for filing the paperwork in order for your property to be reviewed. (Some smaller municipalities will allow you to call the assessor "off season" and discuss your assessment with them. They will most likely want to come into your home and see it for themselves, if they do agree to work with you on it. But for the most part, you will likely have to do an official tax grievance on tax grievance day. You can do this yourself with a lot of research, or hire an appraiser. Some appraisers will not only appraise your property, they will do all the paperwork filing (which is very deadline sensitive), and go to the Board of Assessment Review on your behalf. Most people think the value of their property should be the same or close to the same as their neighbor's. But, just showing up on grievance day and saying my neighbor's house is only assessed for $100,000 - so I think my assessment should be $100,000 won't work. The assessor will base his/her value of your property on sales that sold in your neighborhood of comparable properties to yours within the past year or so. That is what you'll need to research, as well. Find out the sales of similar properties in your area and then make adjustments based on whether they're bigger or smaller, have more bathrooms, a more updated kitchen, etc. You can google the name of your municipality and the words tax grievance form, and you will likely be able to download the forms you need online. Pay very close attention to the deadlines - AND to the offices where you have to send the paperwork - in most cases, you'll have to send out or hand deliver the forms to several different offices throughout your municipality and your school district and some have to be mailed special delivery. If you are turned down at the Board of Assessment Review on tax grievance day - you can file a claim in Small Claims Court, which is very low cost (usually about $30). You don't need a lawyer to go to Small Claims Court. You can go yourself, or you can hire an appraiser to go for you. Remember, you're not asking to lower your taxes - you're trying to lower the assessed value of your property, which will result in lower taxes. Also - make sure you're already getting all the discounts you're eligible for. Did you apply for STAR, which lowers school taxes? Are you a Veteran? or a Senior Citizen? All of these will not affect your assessment, but they help you to lower the percentage of the assessment that you're taxed on. Always feel free to call your local assessor's office to get more information, because each municipality functions differently.