Where a dark patch hides in Hollywood
The 1960s single-storey stock here puts almost everything that matters out of sight in two places. The first is the attic, where the air handler frequently sits along with duct runs that were insulated to the standard of the day and have had sixty years to compress, slip or split. The second is the slab edge, where a terrazzo or tiled floor meets an exterior block wall, which on a house of this era has no capillary break worth the name. Growth at a wall base behind furniture is the commonest Hollywood finding and it is invisible until something is moved.
That is the practical half of this job, because a great deal of what gets photographed and sent to us is not fungal growth at all. Soot deposition from candles, thermal ghosting in dark lines that follow the framing behind the drywall, and dirt staining at an air gap all look convincing and none of them are mold. Send a clear photograph with something in it for scale before you book and a fair number of these conversations end there, at no cost.
Where there is something genuinely growing, a tape lift takes about thirty seconds and the laboratory names the genus. What comes back also says whether the material has actually been colonised or has merely collected spores that arrived from elsewhere, and that distinction is worth more than the name: colonisation means the water is right there, while deposition means keep looking.
Here is the part usually left out. Identification frequently does not change the work. Remediation practice does not vary much by genus, so a result naming one organism and one naming another on the same square metre of wet drywall generally produce the same scope and the same price. Where the fee earns itself is when somebody is disputing that there is growth at all, when the area is large enough that the scope will be argued over, or when the question is whether the staining is fungal in the first place.
The commercial position in Hollywood 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 Hollywood itself changes
The buildings in Hollywood
Hollywood has a median build year of 1969 across 72,843 housing units, which places most of the city in the first generation of Florida housing designed around central air conditioning from the outset rather than having it retrofitted later. That sounds like an advantage and it cuts both ways. These houses were designed to be cooled, so the envelope is tighter than the pre-war stock further south, but they were designed to a 1960s understanding of it: ducts sized generously, equipment specified by rule of thumb, and very little attention paid to what happens to humidity when the machine is satisfied early. Forty-three per cent of the stock is single-family detached and another 19% sits in buildings of fifty units or more, so the city carries both the single-storey slab house and the mid-century beachside block, and those two fail in completely different ways.
Where the water comes from
Hollywood sits inside the footprint of the April 2023 rainfall event, the one that put 25.91 inches on this coastline in 24 hours against a previous record of 14.59 set in 1979. That matters here for a specific reason: the older eastern parts of the city sit on a street grid laid out long before modern stormwater design, so water that arrives faster than the system can take it stands rather than drains. Add the ordinary wet season, 47.27 of the 66.52 inches this coast averages arriving between May and October, and a good share of the calls we take in Hollywood are about a building that took water once and was dried in a hurry.
The cooling systems here
Original ductwork is the defining piece of equipment in Hollywood, because the cooling has been replaced two or three times since 1969 and the duct almost never has. What that produces is a modern, efficient condenser and air handler blowing into a distribution system designed for a different machine, with insulation that has aged out and joints that have opened. In the beachside blocks the picture is different again: through-wall and packaged terminal units serving one room each, with no whole-house dehumidification anywhere in the building and a wall sleeve detailed half a century ago.