Was originally set up at $375,000 It’s now at $454,000 And I need to make it about $550,000 to complete project
Provided that you are within the time period within which to do so (4 months for a single family home, and 8 months for any other project), you can always file successive mechanic's liens if the first lien did not catch everything (for instance, if you performed work since the first filing). However, the lien can only be filed for the reasonable value of the work and materials you've already provided to the project. Accordingly, if that value is "now at $454,000", that's the amount of the lien. You cannot lien for future or anticipated work; accordingly, you cannot "make it about $550,000 to complete project". However, this leads me to the question as to why you would want to put another $100,000 worth of work into a project for which you are not getting paid? I would recommend that you reach out to a knowledgeable construction attorney (I would be happy to take your call) to discuss a possible suspension under the Prompt Payment Act, and otherwise review your contract and review your suspension and termination options so that you're not losing any more money.
I am not certain what you are asking. It sounds like the original quote for the project was $375,000. The price increased to $454,000 and is now at $550,000. Are the price increases due to 1) scope changes, 2) quantity changes or 3) delays/supply chain issues?
Depending on why the price is changing answers the way you go about presenting the price increase. If it is scope or quantity, you have to put that out to the purchaser.
If the reason is either delay or supply chain issues, you need to be forthright about the sitaution.
Sounds like you really need some help because I can't tell if you're an Owner, a Contractor or otherwise. It almost sounds like you're a homeowner that is dealing with a Contractor adding scope via "Change Order" to your project. Absent more clear information, there is not much anyone can do to assist you.