A court may generally only modify a Texas custody order if the modification is in the best interest of the child and there has been a material and substantial change in circumstances since the previous order was rendered or the parties signed the settlement agreement. The court may also modify an order if the modification is in the child’s best interest and an older child has told the court his or her preference or if the parent with the exclusive right to designate the child’s primary residence voluntarily gave up primary care or possession of the child for six months or more. Tex. Fam. Code Ann. § 156.101.
In some cases, when one parent seeks a modification, the trial court may instead grant a modification requested by the other parent. In a recent case, a mother challenged a modification giving the father the exclusive right to designate the child’s primary residence after she had initially moved for a modification to expand the geographic restriction on the child’s primary residence.
Mother Files Modification Suit
Following the parties’ divorce, the mother had the exclusive right to designate the child’s primary residence in one of two counties. She petitioned for modification eight years later, seeking increased child support and the right to designate the child’s primary residence in one of the counties or any contiguous county. The father requested the exclusive right to designate the child’s primary residence within that designated county.
Texas Divorce Attorney Blog


Texas family law presumes a man is the father of a child in certain circumstances, including when he is married to the child’s mother at the time of the birth or when he continuously resides with the child for the first two years of the child’s life and holds himself out to others as the child’s father. Tex. Fam. Code § 160.204. A Texas trial court must generally order genetic testing to determine parentage if one of the parties requests it, but that is not the case if there is a presumed father. Tex. Fam. Code § 160.502. When there is a presumed father, the court may deny the request for genetic testing if the conduct of the requesting party estops them from denying parentage and it would be inequitable to disprove the presumed father’s parentage. In deciding whether to deny a request for genetic testing, the court must consider the child’s best interests, including certain enumerated factors. Tex. Fam. Code § 160.608
A court should consider a number of factors in deciding a Texas custody case. Even when the court determines the parents should be joint managing conservators, the court does not have to award equal periods of possession and access to the child to each parent. Tex. Fam. Code § 153.135. Under Texas law, there is a rebuttable presumption that the standard possession order serves the child’s best interests. Tex. Fam. Code § 153.252. A father recently
The trial court in a Texas family law case has only a limited ability to change its judgment once its plenary power expires. Generally, plenary power lasts for thirty days from the date the final judgment is signed, but it may be extended if the court overrules certain motions or modifies the judgment while it still has plenary power.
When a court considers Texas child custody and visitation, the child’s best interest is the primary concern. The court considers certain factors, including what the child wants, the child’s current and future needs, any danger to the child, the parents’ respective abilities, programs available, the parents’ plans for the child, stability, any acts or omissions indicating the relationship between the parent and child is not proper, and any excuse for those acts or omissions.
A court must base its decisions regarding custody and visitation primarily on the child’s best interest. In a recent Texas case, a father 

