The water history a Lighthouse Point sample is read against
The canals are the defining physical fact and they are tidal, connected through the Hillsboro Inlet to the ocean. What that means for a building is a groundwater level close to the underside of the slab and moving with the tide rather than only with rainfall. A slab in that position stays damp underneath permanently, and the floor becomes the coolest large surface in the house through the cooling season. That is exactly the condition that produces condensation at the floor and at the base of the walls without a single drop entering from outside.
That context is why the outdoor control sample is not optional here. A laboratory can tell you that a cubic metre of your air held a particular number of spores, and on its own that number is unusable, because outdoor air across Broward carries a heavy background load in every month of the year and a building is mostly breathing it.
So every job in Lighthouse Point starts with a cassette run in the outdoor air at the property, in the same hour, before any indoor sample is taken. Two things come out of the comparison. Count, where indoor air substantially above the outdoor air it is drawn from points at an indoor source. And species mix, which is usually the more useful of the two: when an indoor sample carries a genus the outdoor control barely registers, that difference is the finding even if the totals look ordinary.
Two limits go in the report rather than being left for you to discover. Sampling is a snapshot of one hour on one day, and a cooling system that has just cycled reads differently from one that has been off. And there is no federal or Florida numerical standard for indoor mold, so no laboratory can issue a pass or a fail. Anyone quoting a legal limit is quoting their own policy.
The commercial position in Lighthouse Point is the one published on every page of this site, because the rate card is not a Fort Lauderdale rate card. A flat price by property size, agreed before anyone drives out, with the accredited laboratory fee already inside it. It does not rise if the samples come back positive, nothing is added for the drive, and we take no payment of any kind from anyone who removes mold.

What Lighthouse Point itself changes
The buildings in Lighthouse Point
Lighthouse Point is a small town of 6,316 units at a 1967 median, 56% single-family detached and 77% owner-occupied, laid out almost entirely along a network of finger canals cut for boat access. The characteristic building is a single-storey concrete block house on a slab, frequently with a terrazzo or tiled floor, built at a time when nothing resembling a modern vapour strategy existed. There is no capillary break under most of these slabs and no perimeter insulation anywhere.
Where it hides in these buildings
Slab-edge moisture is invisible until flooring is lifted or furniture is moved, so the survey here concentrates on the lowest 300mm of every exterior wall and on the floor covering itself. The signature finding is a dark line at the skirting on a wall that reads perfectly dry at chest height, and it is routinely missed by an inspection that takes readings where a person naturally holds a meter.
The cooling systems here
Split systems retrofitted into houses built before central cooling was standard, with the air handler squeezed into a converted closet or the garage and duct run through an attic that was never designed to carry any. The commonest single failure in this town is a condensate line routed the shortest available way rather than the best one, so that when it blocks, which it does every few wet seasons, it discharges into a wall or a floor rather than somewhere a person would notice.