- Before
- Reconciles premium at the batch level and knows a wave that ties out in total can still have a hundred customers paying the wrong amount.
- Now
- Starts from every policy re-rated and compared step by step, with differences grouped by cause; approves one rule per cause and signs first.
One wave, from test load to signed
Larkhaven Mutual is moving 214,860 in-force policies off HOMER, its in-house mainframe in service since 1994, onto Larkhaven One, one wave of renewals at a time. Wave 3 is 18,412 Homeowners policies in Iowa and Nebraska renewing in December. Offers mail Fri 30 Oct; the wave freezes Sun 25 Oct. Here is Monday 12 October, screen by screen, in the working solution.
- 01Monday morning
Test load 3, policy by policy
Nadia Kerrigan · Conversion leadTest load 3 ran Sunday at 22:40. The wave ribbon splits all 18,412 policies: 17,596 match to the cent, 309 within the $1.00 rounding tolerance, 472 differ, 35 can’t convert — 97.25% parity, up from 94.9% at test load 2. The first difference is Dale & Marisol Brennan, HO 418829-04: the HOMER green screen on the left, the Larkhaven One record on the right, aligned field by field.
“+$14.00 a year, the customer would see it on the renewal offer.”
- 02One click
Re-rated in the new system, step by step
Parity checkerNadia presses “Re-rate in Larkhaven One”. The current term is rated again at IA-HO-2025-07, the same rate version HOMER used, and all 11 rating steps are compared. Ten are equal. Step 6, the protective device credit, is −$14.00 in HOMER and not applied in Larkhaven One. The run log says why: converted with mapping version 3.7, one value with no target — PROT DEV = Y.
Same rate version or no comparison: a rate change is never mistaken for a conversion error.
- 03Traced
The credit was in a remark and on a scan
Difference explainer · Document readerHOMER’s PROT DEV field says only Y. The alarm type sits in the remark CS ALM SOUTHGATE MON #77412 CERT REC 03/19, and the scanned certificate of alarm installation from Southgate Monitoring Co., installed 14 March 2019, shows central-station burglary and fire monitoring. Under rule 406 of the rule manual, that earns a 1% credit on the $1,400.00 base premium.
“Protective device credit dropped. HOMER’s PROT DEV says only Y; the alarm type sits in the remark field, and the map had no target for a bare Y.”
- 04Decided
One rule for every policy with the same cause
Nadia Kerrigan · Conversion leadThe same cause runs through 128 wave 3 policies, worth +$2,108 a year. The proposed rule shows its evidence: 128 of 128 remarks name a central station, and 119 alarm certificates and 9 monitoring invoices read all show fire and burglary monitoring. Approving it moves the map from version 3.7 to 3.8; any policy that still differs stays on the list.
“When PROT DEV = Y with no type, read the remark and the alarm certificate and set the device type.”
- 05Re-rated
128 of 128 match to the cent
Parity checkerAll 128 policies are converted again and re-rated at HOMER’s rate versions. The Brennan home now reads $1,412.00 on both sides, protective device “Central station · fire + burglary”, and wave 3’s differences fall from 472 to 344. Parity moves to 97.94%.
“128 policies fixed and re-rated · 344 differences left in wave 3.”
- 06Next
Every other difference, by cause
Difference explainer344 policies still differ, net +$9,099 a year, across five causes — each with a count, an average, an example policy and a drafted rule. Roof age taken from the year built: 61 policies, about +$195 each; Ruth and Arne Halvorsen’s roof was replaced in 2021, but the age came from the 1962 build year, so $1,644.00 became $1,826.40. A 1.5% wind and hail deductible rounded to 2%. ZIP 50023 split into territories 14 and 14A, moving 96 Ankeny homes.
A rule fixes the conversion, not the rate, and a person approves every rule.
- 07Coverage
A jewelry schedule that never loaded
Document readerTeresa Villanueva’s HO 04 61 lists four jewelry items worth $18,400. The extract carried the schedule’s $202.40 premium but not its items, so Larkhaven One has no items — the coverage is missing. The same is true on 39 policies, $333,900 of scheduled property in all. The rule reads each scanned HO 04 61 and loads every item; a person checks any item over $10,000.
“Coverage differs — cannot be accepted; approve the rule.”
- 08Doubtful
The map, with the doubtful values left to people
Tomás Reyes · Product and forms specialistMapping version 3.8 covers 9 products, 64 forms, 212 fields and 1,318 code values. Values at 95% confidence or more are approved on their own; the rest wait for a named person. ENDT SPP to Scheduled personal property (HO 04 61) waits for Tomás; the roof age class, the wind and hail deductible, the split territory and the loss-free years wait for Nadia. Every decision is versioned.
- 09Exceptions
35 policies that need a person
Lorraine Abbott · Policy services lead21 policies have no construction type, 9 have a ZIP that does not match the county, and on 5 the named insured has died with the estate pending. They stay on HOMER until resolved, each with its agency and an action: request from the agent, correct the address, or convert by hand at renewal.
- 10Before the freeze
The wave signs only when it ties out
Grant Whitfield · Program managerThe Wave reconciler ties wave 3 measure by measure. Coverage A ($5,237,418,000), forms, endorsements and mortgagees tie. Written premium is +$9,140 against a $3,123 tolerance, and scheduled property is $333,900 short. Six blockers are listed, each with its owner, and the signatures go in order: Nadia Kerrigan, then Lorraine Abbott, then Grant Whitfield.
“Wave 3 signs when every policy ties out, or each open item is accepted with a reason. Coverage differences cannot be accepted.”