What Norwich's Revaluation Did

Parcel-by-parcel: how the October 1, 2023 reset changed 10,261 Norwich home tax bills

Why a Colchester site has a Norwich page

Colchester revalues every property on October 1, 2026. Norwich — thirteen miles down Route 2 — went through the same state-mandated reset on October 1, 2023, and its outcome is the closest real-world, parcel-level preview of what a post-pandemic revaluation does to home tax bills. This page measures Norwich's outcome from the state's public assessment files: every one of the 10,261 homes that appears on both the pre- and post-revaluation grand lists.

The companion page applies this measured pattern to Colchester's own grand list to see what 2026 could look like here — and why Colchester's different tax base changes the answer. For the mechanism lever by lever — and a model you can set to any town — see How a Revaluation Moves Your Bill; for the reset landing right now next door, see East Hampton's revaluation.

Homes whose bill rose
98.9%
10,143 of 10,261 homes (TCD rates; 98.8% at CCD rates). 118 homes — about 1 in 87 — pay less.
Median bill change
+$1,064/yr
at TCD rates (+$1,208 CCD) — a +27.1% increase; about +$89 a month.
Median assessment change
+61.4%
median home market value $133.8k → $217.6k. 34 homes (0.3%) saw an assessment fall.
Mill rate (TCD total)
42.22 → 33.25
−21.2%; CCD 48.64 → 38.20. Car taxes capped at 32.46 mills both years.
How to read this page: a revaluation does not raise a city's total tax collections by itself — when assessments rise, the mill rate is cut in the next budget. What it changes is each property's share of the total. With Norwich's adopted rates, a home's real-estate bill rose exactly when its assessment rose more than +27.0% (Town Consolidated District) or +27.3% (City Consolidated District, the paid-fire district). The median home rose +61.4% — more than twice the break-even — and that gap is the tax increase. See the glossary for mill rate and assessment terms.

Distribution of assessment changes — nearly every home cleared the break-even

Change in assessed value at the October 1, 2023 revaluation for 10,261 Norwich homes (single-family, condo, mobile home, two-family), in 5-point bins. Red bars: assessment rose. Blue: fell. The vertical line marks the +27% break-even — a home left of it got a tax cut.

What it shows: the whole distribution sits far right of the break-even line. The 10th-percentile home — one that did better than nine in ten — still rose +45.8% and still pays +$523 a year more (TCD). To the question "how likely was a tax increase?", Norwich's measured answer was: near-certain.

Distribution of bill changes — the typical increase clusters around $1,000 a year

Change in the annual real-estate tax bill per home, FY 2023–24 → FY 2024–25, at Town Consolidated District rates (42.22 → 33.25 mills), in $100 bins. CCD figures run about 14% higher.

DistributionAssessment changeBill change (TCD)$ / yr (TCD)Bill change (CCD)$ / yr (CCD)
10th percentile+45.8%+14.8%+$523+14.5%+$591
25th percentile+53.8%+21.1%+$803+20.8%+$911
Median+61.4%+27.1%+$1,064+26.8%+$1,208
75th percentile+72.1%+35.5%+$1,353+35.1%+$1,539
90th percentile+83.9%+44.8%+$1,664+44.4%+$1,895

Real-estate levy only; excludes individual exemptions and credits (veterans, elderly and disabled programs) and motor vehicles. The parcel file does not say which fire district a property is in, so both district rate pairs are shown; they differ only in the fire-service add-on. 90% of homes rose at least $500 a year, 56% at least $1,000, 3.5% at least $2,000.

Which properties rose most — the market moved hardest under the cheapest housing

Median assessment change by property type at the 2023 revaluation. Parcel medians (a parcel must carry the same class in both years); CT OPM's dollar-weighted class totals differ and are shown in the class table below.

TypeParcelsMedian changeMedian bill change (TCD)
Four-family174+118.7%+$3,259
Three-family313+85.4%+$1,817
Mobile home533+85.3%+$329
Two-family1,206+61.2%+$1,029
Condominium1,432+61.0%+$810
Single-family7,083+60.6%+$1,136
Apartment building (5+ units)193+39.9%—
Commercial664+4.1%—
Industrial98+4.7%—
What it shows: every kind of home cleared the +27% break-even, but not equally. Small multifamily houses and mobile homes — the least expensive stock, where investor and starter-home demand concentrated after 2020 — rose most (four-family +118.7% median, three-family and mobile homes about +85%). Commercial and industrial parcels, revalued in the same exercise, moved little by comparison (+4 to +5% median).

Within homes, the least valuable fifth rose most

Median assessment change by pre-revaluation value quintile (equal fifths of all 10,261 homes by GL 2022 assessed value).

Both readings: as a share of the old bill, the burden tilted toward the least expensive homes (+74.9% median assessment change for the bottom fifth vs. +52.6% for the top). In dollars, the most valuable homes still pay the largest median increases (+$1,331/yr vs. +$735, TCD) because they start from bigger bills. Both readings are valid; neither alone is the whole picture.

The tax base shifted onto homes

Share of Norwich's net taxable grand list by class, before (GL Oct 1, 2022) and after (GL Oct 1, 2023) the revaluation. Class shares use gross class values over the net grand list and are approximate.

Why nearly everyone paid more: a revaluation moves shares, not totals — but the reshuffle happened between classes. Homes rose ~62% while commercial rose ~11% and motor vehicles and business equipment shrank, so homes went from 51.1% to 61.5% of the base in one step. A home only "won" if it rose less than the whole base's +34.7% — and even the 10th-percentile home rose +45.8%. Separately, the adopted FY 2024–25 rate sat about 6% above the levy-neutral rate (33.25 vs. ≈31.35 mills), so of the median +27% bill increase, roughly twenty points came from redistribution onto homes and six points from levy growth. Car taxes offered no offset: capped at 32.46 mills both years, citywide motor-vehicle collections fell about $0.6M against an $11M rise in homes' real-estate levy.
Grand list classGL Oct 1, 2022GL Oct 1, 2023Change
Residential (homes)$1,084,471,363$1,756,432,872+62.0%
Apartments (5+ units)$123,383,825$165,573,975+34.2%
Commercial$380,835,285$423,380,092+11.2%
Industrial$62,969,275$67,796,275+7.7%
Vacant land$38,780,496$45,184,145+16.5%
Motor vehicles (net)$283,529,874$263,908,760−6.9%
Personal property (net)$167,690,436$157,582,640−6.0%
Net taxable grand list$2,122,094,386$2,857,744,631+34.7%

Gross assessed values by class except where marked net. The 2022 commercial figure excludes $13.8M of income-and-expense penalties listed separately that year (counted within commercial & industrial in the chart). Source: CT OPM, Net Grand List by Town (webp-fgt3).

Where in the city it landed

Median outcomes by the assessor's own CAMA neighborhood zones (zones with 100+ homes). Codes are valuation areas, not official neighborhood names; the most common streets locate each zone. The blank-coded group is parcels with no zone code recorded.

ZoneMost common streetsHomesMedian changeMedian bill change (TCD)Paying more
0110Great Plain Rd, Surrey Ln, Manwaring Rd327+80.9%+$1,547100%
0060East Main St, Hamilton Ave, Roosevelt Ave518+76.0%+$1,32196%
0080New London Tpke, Asylum St, Maple St650+69.8%+$1,385100%
(blank)Old Pond Ln, Nashua St, Apache St147+69.5%+$80888%
0051Central Ave, Prospect St, Boswell Ave518+68.2%+$1,10399%
0030Hunters Rd, Merchants Ave, Hunters Ave680+66.3%+$949100%
0140Laurel Hill Ave, Laurel Hill Rd, Ridgewood Dr383+65.9%+$1,206100%
0130Lucas Park Rd, Trading Cove Dr, Everett St264+65.4%+$1,08995%
0120Old Pond Ln, Dunham St, Summit St1,003+64.0%+$1,023100%
0050Plain Hill Rd, Boswell Ave, Broad St1,731+60.1%+$932100%
0020Old Canterbury Tpke, Canterbury Tpke, Baltic Rd682+60.0%+$842100%
0090Lincoln Ave, Yantic St, Oneco St381+59.2%+$89392%
0100Briar Ln, Sheraton Ln, Laura Blvd536+56.7%+$1,013100%
0070Sherwood Ln, Cherry Hill Rd, Dudley St393+56.3%+$1,358100%
0010Scotland Rd, Harland Rd, Canterbury Tpke1,325+52.1%+$1,04499%
0040Yantic Ln, North Wawecus Hill Rd, Browning Rd584+47.7%+$82199%
What it shows: the geographic pattern echoes the value tilt — zones dominated by lower-priced housing (the East Side around East Main Street, Greeneville along Central Avenue) rose most; the higher-priced western zones rose least. Every zone's median cleared the break-even by a wide margin.

The homes that went the other way

Decreases were rare and specific.

Of 10,261 homes, 34 (0.3%) saw an assessment decline: 30 were condominiums, concentrated in a few complexes off Yantic Street and Sherman Street where units were marked down roughly 12%, plus 3 single-family houses and 1 two-family (the largest, on Plain Hill Road, fell 41%; the files do not say why, and changes like these are consistent with demolition, damage, or data correction rather than the market). Including homes whose assessments rose but by less than the break-even, 118 homes (1.1%) ended up with any real-estate tax cut at all. Formal pushback was also small: the assessor's office reported 21 appeals of the 2023 revaluation pending into late 2024, 11 settled or withdrawn that quarter.

Check a Norwich home

Enter a home's assessments from before and after the revaluation (both are public in Norwich's Vision assessment database) to see the same arithmetic applied to one property. Estimates cover the real-estate levy only, before exemptions and credits.

Most of the city is TCD; the central city is CCD.

Defaults: a home at the median GL 2022 assessment ($93,600) carried at the median +61.4% change. Rates: FY 2023–24 total 42.22 (TCD) / 48.64 (CCD); FY 2024–25 total 33.25 / 38.20 — City of Norwich mill-rate table and CT OPM.

How this was measured

  1. Parcel files. CT OPM publishes every town's assessment roll (CAMA) annually on data.ct.gov. Norwich's rows were pulled from the 2022 collection (i7xw-titi; 13,969 parcels, stated valuation year 2022 — the last pre-revaluation values) and the 2024 collection (pqrn-qghw; 13,925 parcels, stated valuation year 2024 — post-revaluation), selected on property_city='Norwich'.
  2. Join. The files share a stable parcel id: 13,900 of 13,925 newer-file parcels matched (99.8%); street addresses agree on 99.2% of matches (the rest are spacing differences); 13,850 matches carry a positive assessment in both years.
  3. Validation. Residential-coded assessments in the join sum to $1,090.0M (old) and $1,767.2M (new) against CT OPM's published Norwich residential grand list of $1,084.5M (GL 2022) and $1,764.5M (GL 2024) — within +0.5% and +0.2% (the small excess is exempt parcels carried in the CAMA file).
  4. "Homes." Parcels state-coded single-family (1010), condominium (1021), mobile home (103R) or two-family (1040) in both files, excluding 3 built in 2022 or later: 10,261. Three- and four-family houses and 5+ unit apartment buildings are shown separately.
  5. Bills. Assessment × total district mill rate ÷ 1,000, FY 2023–24 (42.22 TCD / 48.64 CCD) vs. FY 2024–25 (33.25 / 38.20). Every figure on this page is generated by one script from the raw downloaded files, and each headline number was reproduced by an independent recomputation.

Known limits: the post-revaluation side is the GL 2024 file, one year after the reval (no public GL 2023 parcel file exists for Norwich; citywide residential moved +0.5% between the two years and 99.3% of parcels carry identical current- and prior-year values, so it stands in for the reval outcome). Assessment change conflates the market reset with physical change (renovation, demolition) — the files don't separate them.

Sources

  1. CT OPM, Connecticut CAMA Data 2022 (i7xw-titi) and 2024 Connecticut Parcel and CAMA Data (pqrn-qghw), data.ct.gov, accessed Aug 21, 2026.
  2. CT OPM, Net Grand List by Town, 2011–2025 (webp-fgt3) — Norwich class totals, GL 2022–2024.
  3. CT OPM, Mill Rates for FY 2014–2026 (emyx-j53e) and City of Norwich, Mill Rates (norwichct.gov/357/Mill-Rates).
  4. City of Norwich, Revaluation (norwichct.gov/592/Revaluation) — effective 10/1/2023; notices mailed 12/15/2023; conducted by Vision Government Solutions; prior revaluation 10/1/2018.
  5. Norwich Assessor's Office, Quarterly Report to the City Council, Oct–Dec 2024 (norwichct.gov) — 21 appeals; 11 settled or withdrawn in the quarter.
  6. C. Bessette, "Norwich homeowners see 60% jump in assessed property values," The Day, Dec. 28, 2023 (theday.com); "Norwich City Council narrowly approves $156M city, school budget," The Day, June 11, 2024.
  7. Conn. Gen. Stat. §12-62 (five-year revaluation cycle), §12-62a (assessment at 70% of fair market value) (cga.ct.gov).
  8. Raw extracts, provenance, and the analysis script: NorwichReval/ in the project repository.