Building Biology for a home that holds you up.

Building Biology enhances the health and wellbeing of everyone in the home. This approach is the foundation of the Holistic Home Zone Method.

Mold issues from moisture problems, VOCs from new materials, combustion gases from gas appliances, bacteria indicators, odor patterns, and CO₂ all affect your air quality. Electromagnetic Frequencies (EMFs) such as radiofrequency from your Wi-Fi router, electric frequencies from your home’s wiring, dirty electricity from electronic devices, and magnetic frequencies from home appliances are all assessed. Kit also checks for cell towers transmitting 5G frequency with a specific meter designed to do so.

Water quality is assessed, and Kit also makes suggestions on how to improve your interior lighting to make sure that every aspect of your home supports your wellbeing.

The Holistic Home Zone Method aligns with the 25 Building Biology principles, which go past standard minimums on residential indoor air and water quality, as well as exposure to non-native EMFs.

Most Florida and Georgia homes I walk into run total VOCs between 200 and 500 ppb, well below the 1,000 ppb threshold where symptoms become common. New construction, recently renovated rooms, and homes with attached garages push well above that line. A Jacksonville client in October 2025 measured 1,840 ppb in a freshly painted nursery three weeks after the painter said it was “cured.” It wasn’t. The infant’s sleep and eczema resolved six weeks after the paint finished outgassing.

Formaldehyde is worth singling out because it is the VOC most tied to chronic sinus and reactive airway symptoms. Pressed-wood cabinets, MDF furniture, laminate flooring, and engineered wood subfloor are the common sources. Kit measures formaldehyde separately with a Temtop M2000 during the walkthrough and flags any room above 50 ppb.

The six VOC sources that account for 80 percent of Florida home findings: new mattresses within 90 days of delivery, paint within 6 weeks, engineered flooring within 120 days, plug-in air fresheners and diffusers, scented candles, and cleaning products left uncapped under sinks.

Gas stoves in kitchens without vented range hoods are the single most consistent combustion finding. NO₂ readings during cooking regularly hit 100 to 300 ppb, above the EPA 1-hour outdoor limit of 100 ppb. Homes with kids and asthma see the most benefit from either switching to induction or installing a properly ducted range hood that exhausts outdoors, not a recirculating filter that does nothing.

Gas water heaters in conditioned closets without combustion-air vents can back-draft on windy days and during bath-fan use, pulling CO into the living space. Kit tests draft at each combustion appliance and flags any closet that needs ventilation work.

Attached garages in Florida and Georgia homes are the other common finding. Pressure differentials during HVAC operation pull garage air into the house through shared walls and door gaps. Gasoline, lawn equipment, and engine exhaust track in at low concentrations over time. The fix is usually a simple weather-stripping upgrade on the garage-to-house door plus sealing the shared wall top-plate during attic work.

Most homeowners ask the wrong filter question. MERV 13 or MERV 16? The better question is whether the HVAC system is sized to handle the pressure drop that higher MERV filters create. A MERV 16 filter on an undersized return will starve the system, ice the coil, and produce worse air than a MERV 8. Kit checks static pressure at each return and recommends a filter grade that matches the system.

Duct condition matters more than filtration. Lined ductwork from the 1990s with degraded fiberglass liner acts as a mold food source when humidity rises. R6 flex-duct with compressed or kinked sections delivers 30 percent less airflow than spec and starves certain rooms. Kit logs duct condition during the walkthrough and flags the ones that need attention.

Runtime is the silent variable. A Florida or Georgia HVAC that runs short cycles never removes enough humidity, and indoor RH creeps above 60 percent by mid-afternoon. Thermostat setpoint strategy, a whole-home dehumidifier, or a variable-speed blower are the three fixes that work. Kit logs runtime during the inspection window and advises which approach fits the house.

An Building Biology assessment that ignores moisture misses most of what matters. An elevated VOC reading in a guest bathroom often traces to wet drywall behind a vanity that has started to grow. A spike in CO₂ in a sealed bedroom reveals the same stagnant-air pattern that invites mold on window returns. Because the tools overlap, Kit bundles mold + Building Biology at a 15 percent discount off the combined total.

Most clients booking IAQ alone fall into one of three patterns: a new-construction or renovation home with chemical-sensitivity concerns, a family with a recently diagnosed asthma or allergy issue looking for triggers, or a homeowner who got a passing mold inspection elsewhere and still doesn’t feel right in the house.

Building Biology assessments take five to eight hours on site for an average-sized home. Pricing is based on several factors, including square footage, type of build, the number of bedrooms and bathrooms, and whether there is a crawlspace or basement.

All clients receive a written report with findings within 72 hours. Lab fees for things affecting air quality or water, when warranted or requested, are collected at our cost.

Building Biology assessments are complete home environment inspections and a tremendous value. Most clients who are booking because someone in the household feels off choose the Building Biology approach to make sure all environmental toxins are considered at once.