Best to you!
ABR, ASP, CLHMS, CRS, ePRO, GRI, SRS
Generally, the new home construction purchase agreement has a paragraph that excludes paying a commission to a realtor and an addendum must be executed if you have a realtor who is to be paid by the builder. Do you have an addendum that contracts the builder to pay a realtor? If yes, is the realtor named in the adddendum the one whom you refer to as "my realtor" and who does not return your calls?
Sorry to read about this, good luck!
If your Realtor isn't answering your calls, you have a couple of options: Maybe try calling his broker (the company they work for, like ReMax, or Keller Williams, or some other agency), and asking them for help, or you can also contact the Austin Board of Realtors, and talk with them.
As for the details of your contract, I cannot comment on that at all, as I am not a lawyer or involved party.
Feel free to contact me if you want, but I really don't have more info than this.
Everything is govenered by the executed agreements you have signed
Lynn911 Dallas Realtor & Consultant, Credit Repair Advisor
Multimillion Dollar Sales Producer
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Have you signed a representation agreement? If you haven't, the Realtor is really not representing you and has no obligation to answer your questions (though he/she should morally have that obligation). If you have signed an agreement and you feel that the Realtor has not served your best interest and has not given you advice and has not represented you in this transaction, you can always file a complaint with TREC.