A Texas subdivision is promising safety checks will be done on homebuyers to assure no convicted sex offender lives next door.The no-offender feature puts the responsibility on home builders. Even if they unknowingly sell to a convicted sex offender, financial penalties will apply. Builders are expected to run background checks on adults buying homes and on juveniles expected to live in the houses.The federal government said the plan appears legal. Sex offenders are not considered a protected class. But officials said the criminals could live near the subdivision, giving residents a false sense of security.A criminal defense lawyer questions how effective the ban will be because, most sex offenders are relatives or acquaintances.