Carpet cleaning, air duct cleaning and dryer vent cleaning in Rosemount, the five acre end of town is why we drive down.

The comprehensive plan puts this better than we could, saying “A little less than 20% of Rosemount’s housing stock is over 35 years old, the age at which major maintenance efforts need to take place such as furnace or roof replacements,” and then that “the total number of homes over 35 years old is expected to double over the next 10 years,” which is the city itself naming thirty five years as the point the furnace comes up, and the ductwork behind it is the part nobody looks at while that’s going on.

The rest of it is young, because the census puts the median year of construction at 2000 for Rosemount’s housing overall and at 2000 again for the owner occupied part of it, with just over half the city, 5,213 of 10,175 units, going up inside two decades, 3,171 of them in the 2000s and 2,042 in the 1990s, and only 16.4 percent of the housing here predating 1980. The city timed its own boom too, saying it added “nearly 400 new dwelling units each year” from 1999 through 2005 and hitting 551 permits in 2004 alone before falling to 53 units in 2011, so a street here tends to be one builder and one build year the whole way down, and whatever’s coming due on one house on it is coming due on the rest at the same time.

There’s an older Rosemount inside that, and the plan maps it by street rather than by feel, naming “Older, pre-1940’s neighborhoods immediately adjacent to downtown that follow a rigid grid street system west of South Robert Trail located north and south of 145th Street West,” then post war building through the 1950s to the 1980s spreading west, southwest and northwest of downtown, then the outward expansion north of Connemara Trail, south of 156th Street and east of downtown from the 1990s on. The census counts 302 units in the city from 1939 or earlier and 795 from before 1960, and the sanitary sewer plan counts about 944 connected properties built before 1970 against roughly 6,234 built after it, so the old core is a real thing and a small share of the town, and it’s worth saying which one you’re in when you call because a grid house off 145th and a 2004 subdivision aren’t the same job.

People stay in these houses as well, because the census counts 3,697 owner households in Rosemount, 42.6 percent of them, who moved in during 2009 or earlier, with 1,396 of those already in before 2000, and plenty of them bought new off a builder, so there’s been no closing and no walkthrough in seventeen years or more to put anybody in front of the ductwork. We can’t tell you from a website whether yours has ever been opened and we’re not going to guess at it, but you’ll get a straight answer once we’ve got a panel off, and if it turns out it doesn’t need doing we’ll tell you that and leave.

It’s the same three things at every house, powerful vacuum, compressed air and rotary brush, and all three of them go in every time. We sometimes cut more than two access points in the trunk lines. We never charge for more than two.

Almost every floor we’d be cleaning down here belongs to whoever answers the door, because the census counts 8,677 of the 9,924 occupied homes in Rosemount as owner occupied, and 87.9 percent of the units in the city are single family, 6,922 detached houses and 2,020 attached townhomes.

The city counts 30 parks across 540 acres and says they sit “primarily in the western and central portions of the city,” which is the half the houses are in too, with Carrolls Woods over on 142nd Street West, Schwarz Pond off Dodd Boulevard and Horseshoe Lake on Aulden Avenue, and then the north end of town is gravel drives, wells and horse pasture instead. What comes back in through your front door depends on which of those two ends you’re on, and either way it’s the same lane worn down the middle of the hallway and the same landing at the top of the stairs.

We run truck mounted hot water extraction, so the machine never comes inside, it sits out in the driveway and we bring the hose in, and it takes enough water back out of the carpet that a floor cleaned in the morning is dry that evening in normal conditions. Your water here runs 17 grains per gallon, which the city’s own water page calls considered hard, and that’s a working condition we account for rather than something we’ll sell you a product for, and coming this far it’s worth putting a whole floor on one visit rather than a room, because small carpet jobs come up to the $129 minimum for a visit anyway.

The city counted 168 townhome units in Rosemount in 1990, then 714 by 2000, 1,428 by 2010 and 1,518 by 2017. The census has caught up with that since and puts 2,020 attached homes here out of 10,175 units, so the shared wall stock is mostly a build from the late 1990s through the 2000s and those dryer runs are fifteen to thirty years old now. In a shared wall unit the laundry tends to sit away from any outside wall, so the duct has to turn its way out past the neighbors before it finds daylight, and that’s a lot more places for lint to stop than a straight run out the back would give it.

If you’re on a board, or you’re the one who ends up organizing things for the row, that’s the call worth making from this far away, because six or eight units booked into one afternoon is a different proposition to one vent at the far end of the metro, and we can put a number on the whole row for you over the phone.

There’s one thing we can’t do and you should hear it before you book us rather than after we’ve crossed the metro. Ground level only. We do not do roof vents or anything twenty feet up. That takes in the 342 units the census puts in buildings of fifty or more here, and it’s a straight limit rather than something anyone talks us into.

In 1942 the federal government took 13,000 acres of farmland here and moved 90 families off it to build the Gopher Ordnance Works, and the city’s own history says “Twenty thousand workers and 856 new buildings were part of the project” and that the plant, which was never fully functioning, ceased operations in April 1945. Around 8,000 of those acres went to the University of Minnesota shortly after, which is the land everybody here knows as UMore Park, and it’s a good part of why a city of about thirty five square miles has only ten thousand homes standing in it.

Between them Flint Hills Resources and the University own approximately 7,500 acres of Rosemount, which the parks chapter puts at 30 percent of the area of the city, and the same chapter says the western part of the city is largely developed while the eastern portion is devoted to agriculture, open space and industrial uses. So a job down here ends in a subdivision or on acreage, and a lot of what we drive past on the way in isn’t housing at all.

None of that means the city is finished, because the 2040 plan brings the UMore land inside the regional service area and points about 4,000 acres in the southeast at future growth, and the Metropolitan Council projects Rosemount will add 2,300 more housing units between 2020 and 2030. If yours turns out to be one of those, your ducts will have sat open through the whole build with every other trade working around them, so it’s worth a call in the first year rather than the tenth.