All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
Indeed, you did well by being keen on being kind to your parents-in-law; this is evidence that you are rational and just, so may Allaah reward you.
It is the right of the wife on her husband to live in a separate accommodation with him and she is not obliged to reside with any of his relatives as stated by the jurists . For more benefit, please refer to Fatwa 84608.
On the other hand, it is Islamically required that the son be kind and dutiful to his parents as we clarified in Fataawa 84942 and 87019. Therefore, the son should give each one his right; he should be kind and dutiful to his parents and provide his wife with a separate accommodation.
Hence, we advise you to discuss the matter with your husband to have a mutual understanding about it, and avoid problems and avoid being fanatic so that this would not lead to something more serious.
Also, it appears that your husband is convinced that he should offer you a separate accommodation but he does not want to make his parents angry. So, you should help him to solve this problem without any unpleasant consequences.
Finally, we advise you to be patient and tolerate as much as you can your parents-in-law living with you if this does not greatly harm you so that you would get the reward of the patient people, and you would avoid bad relationship between you and your parents-in-law or between him and his parents.
Allaah Knows best.