Danbury's housing stock is mixed, and we work in all of it. The 2019 American Community Survey count used in the Western Connecticut Regional Affordable Housing Plan gives the city 32,990 housing units, of which 13,993, or 42%, are detached single-family houses; 11% are attached, 11% are two-family, and the rest sit in buildings of three units or more. Census QuickFacts puts the owner-occupied rate at 53.8% for 2020-2024 and the median owner-occupied home value at $411,200. The practical point for our crew is age: the hat industry that built much of the city had wound down by 1965, and any house built before 1978 falls under the EPA's Renovation, Repair and Painting rule once our demolition disturbs painted surfaces, which it always does. Our Danbury numbers page sets those figures beside the eight towns.
Every bathroom permit we pull in Danbury is reviewed under the 2022 Connecticut State Building Code, which applies to permit applications filed from October 1, 2022 and adopts the 2021 International Residential Code, the 2021 International Plumbing Code and the 2020 National Electrical Code. The Permit Center at 155 Deer Hill Avenue is the single intake point for Building, Zoning, Engineering, Fire Marshal, Health and Public Utilities review; we upload the application as PDFs through its OpenGov portal, staff do a completeness check, and we schedule every inspection through the same office. The code's exemption list spares painting, tiling, cabinets and countertops, but not the replacement or rearrangement of valves, pipes or fixtures, which is why we treat a shower valve swap as permitted work. Fee schedules are set by each municipality under Section 109.2 of the code.
Danbury's Water Pollution Control Plant treats wastewater for Danbury, Bethel, Brookfield, Ridgefield and Newtown through 164 miles of sewer line, and it accepts septage from New Fairfield and Redding, where homes pump septic tanks instead. WestCOG's 2020-2030 regional plan reports that 77% of Danbury residents have public water service, which leaves about 23% on private wells, the same share the Department of Public Health cites statewide. The difference shows up twice in our work. On a septic lot, adding a bathroom can trigger review under Public Health Code section 19-13-B100a, where the local director of health confirms that a code-complying area exists for the system. On a well, hardness, iron and manganese decide whether fixtures scale and stain; Aquarion's 2025 reports show hardness averaging 12 grains per gallon in Ridgefield and 16 in New Milford, and the DPH recommends testing a private well for all three before we order fixtures.
Danbury's NOAA 1991-2020 climate normals explain two details of how we build. The January mean is 28.0 degrees Fahrenheit, the year carries 5,777.1 heating degree days and 126 days with a low at or below freezing, so when a tub or shower sits on an exterior wall we insulate and air seal the cavity behind it. Connecticut's plan-review checklist requires the air barrier at exterior walls adjacent to showers and tubs to separate them from the showers and tubs, and the state sits in Climate Zone 5, where the IRC calls for a Class II or tighter interior vapor retarder on framed walls, which is what we install. We set footings and buried water lines below the 42 inches of frost depth cited in the state's code interpretation, which matters when a lake-cottage bathroom addition needs a new foundation or a new service line.
Candlewood Lake, completed on September 29, 1928, covers 5,420 acres with about 65 miles of shoreline across Brookfield, New Fairfield, New Milford, Sherman and Danbury. New Fairfield calls itself a summer vacation community, and Aquarion's main system there serves about 140 people, so nearly every lake house is on a well and a septic system, and we plan the job for both. That matters when we winterize a seasonal cottage: the Public Health Code treats adding a positive heating supply, a freeze-protected water supply or insulation as a building conversion that the director of health reviews, and a second bathroom can raise the design flow. Our permits guide covers the B100a review town by town, along with each building department's portal and hours.