Pallet racking in Cypress, TX.

No, and assuming it does is the most common and most expensive mistake made on projects here. Cypress is unincorporated Harris County, so the Harris County Fire Code applies rather than the Houston Fire Code. The practical difference is large: Harris County requires an operational permit to use a building or portion of one with more than 500 square feet of high-piled combustible storage including aisles, and a construction permit for installing or modifying a structure with more than 500 square feet of it. The City of Houston threshold is 2,500 square feet and there is no separate construction permit of that kind. A rack system that needs no operational permit inside the city can very easily need two permits here.

Yes. Under the Harris County Fire Code, high-piled storage building permits are renewed annually, or sooner if the pathway or movement through the building changes. That second clause is the one that catches operators out, because it means a significant rack reconfiguration, a new aisle layout or a changed egress route is a permit event rather than an internal decision. If you are planning a relayout, it is worth treating the permit renewal as part of the project rather than as paperwork to deal with afterwards.

Modern buildings in this corridor carry Class A clear heights, so the practical limit is usually the sprinkler design rather than the deck. In an ESFR-protected building the certification sets maximum storage height and the flue spacing that must be maintained, and those are not field-adjustable. We measure usable clear height against the lowest sprinkler head and the lowest obstruction in the bay, confirm the sprinkler certification, and then design to the cube that is genuinely available.