Since I last posted, I've narrowed a few things down. One of the rooms that was affected (there were 2 rooms total), has been fixed. The french drain I installed around the perimeter of the front of the house, where water was creeping under the foundation, seems to have fixed the issue in the larger room. There is now no more musty smell in there. However, the other room, which is a "closet" that backs up directly to a bathroom, still has the odor, which has actually gotten worse. The smell is definitely partially sweet, and partially musty. I've cut the drywall all the way around the room to see if there is any signs of water damage, dead animals, etc inside of the walls. Interestingly enough, the inside of the walls that butt up to other rooms, smell fine. The walls that have concrete on the other side, have the odor present (perimeter walls). The only two things I haven't addressed yet are the roof (I'd have to cut the ceiling open because there is no attic access at this point for how low the roof pitches). The other thing would be the foundation (slab). I have fairly expensive laminate flooring and underlayment in that room, which would have to be removed, and the floor would have to be inspected for dampness. However, given the circumstances, it's been narrowed down quite a bit. The room has 4 walls (2 butt up to exterior concrete and 2 others butt up to interior rooms), a standard hollow core wood door, a West-facing window, and a drywall knockdown ceiling. There is only two piece of furniture in the room, which are bookcases. One is MDF (still wrapped in plastic to hold it together before I bolt it in), and the other is pine wood, also wrapped in thin plastic to protect it. I've just put two large shop fans, a big air purifier, an ionizer, and ozone generator all in the room with a big bucket of damprid (although humidity levels in that room are only 49% in south florida, which is fairly average). I've also sprayed half a can of lysol air spray into the room. I'll let you guys know how that works out, and hopefully we can figure it out. and ESMAN - let me know your notes as well. Thanks.

I just toured a property with a mold expert. Not a mold remediation contractor,(who may be hoping to find a big problem to work on) but a Certified Industrial Hygienist. (CIH) He brought a moisture meter and other equipment. He checked under each sink looking for leaks. With the probe he checked a ceiling spot that looked like an old leak, but he said no moisture present there. You are going to be looking for water intrusion (roof, wall leaks, plumbing problems.)because those are spores you are smelling. a CIH can do air samples as well to see if spores are in the air. The fact that you could smell a change after rain suggests a roof leak or a crack along a wall outside. Can you go up into the attic space with a flashlight? A home inspector who checked the house out when you bought it wouldn't have found anything necessarily because as a new home ages it settles. You can find cracks around the fireplace flashing up on the roof because that caulking cracks sometimes with a change of season. Recaulk. Send a registered letter now to the builder detailing the fact that you gave notice earlier, and now the problem is worse after a rain. If you installed satellite or cable and the installers made holes for their equipment on the roof or just walked over the roof--that could be the area water is entering.

Suziesnowflake is spot on -- if the PO's had to replace subflooring, something's wrong. The problems with window flashing are espeically bad in stucco houses because the stucco traps the moisture inside. Our house was 6 years old when we started noticing a pretty strong musty smell in several of the bedrooms and in the laundry room. We had noticed the smell on and off for the past couple springs but it would always go away before we'd get worried enough to do anything about it. That year, the smell stayed and got stronger. We had no signs of water intrusion anywhere and no previous mold problems. We took the electrical outlet plate covers off the wall and noticed that the smell seemed to be coming from inside the walls. Also, the screws inside the outlet boxes were rusty. We had several contractors out and none of them could find any sign of a problem - a few of them even said I was crazy (not so bluntly but that was the implication) becuase they couldn't smell or see anything. Finally, one day, we pulled a piece of slightly punky wooden trim off the outside (the contractors all said that that's just a normal thing that happens to wood trim and we should just plan on replacing it once in a while). While we were removing it, the crowbar went through the house. All of the sheathing was completely moldy and rotten - you could put your finger through it. We ended up spending over $100K (none of it covered by insurance) to replace the entire outside of the house - we stripped it down completely to studs and drywall. Some of the studs had to be replaced. We had to replace all the insulation - it wasn't wet, but was holding the musty smell. We washed the worst of the mold off the studs with bleach. We reinstalled insulation, new sheathing, and new siding (while PROPERLY flashing the windows). It was a nightmare and we're still recovering financially and emotionally (I'm a stress eater and I packed on a good 40 lbs in less than a year from the ordeal). I hope that your problem isn't this serious, but if your home is recently built (last 15 yrs or so), there's a good chance that it is. After my hard-earned lessons on flashing and homebuilding techniques, I can even today drive around to new developments and watch new million-dollar houses being built with improper window flashing. This is going to become a big problem over the next 10-15 years as all of this hidden moisture starts to manifest itself. I'd definitely do some investigating since the sooner you catch it, the less there will be to fix (and maybe you can go after the previous owners for some of it if you can prove they knew there was a problem). Start by taking the outlet plate covers off in the rooms with the smell and sniff -- is the smell stronger in the outlet boxes? Are the screws inside the outlet boxes rusty? If so, you've got moisture in your walls and that's not good. I'll link to my website if you want to look at the gory details of our house....but it's not for the faint-hearted, LOL! And if you do look, remember that even with all that damage and rot, we never had ANY signs of moisture or leaking inside -- all we had was the smell which, like you said, was worst in the change of seasons (spring especially). Here is a link that might be useful: Worst case scenario....

Mara... I would LOVE to live off-post, but we have 3 chows ( sweetest, most friendly dogs ever ) and most places here at Hood won't let renters have "aggressive breeds" We're allowed to have them on post as long as we keep insurance on them and they don't cause any problems. When we first moved in, the backyard had those old metal poles for line drying, but no line. A few weeks later, maintenance came and took the poles out and we had to sign an agreement to not hang dry laundry to help keep up the appearance of the neighborhood. We have a back porch, but its not covered and is closed on three sides and we back up right next to the housing office haha. I supposed if this load is still stinky, I will just suck it up and them to the cleaners. I really appreciate all the suggestions you all have given me! I have gotten so much help for many problems.. who knew laundry could be so complicated?!