If a number on this site changed, it's here: what moved, when, and why. Newest first.
This covers changes that could move a figure you used: corrections (we had something wrong), data updates (a source published new numbers), and method changes (how something is calculated). New pages and design changes aren't listed. Mistakes also get their own page, Corrections, with what was wrong and what's right.
7 corrections4 data updates2 method changes
The full engineering history, every commit, is on GitHub ↗.
ValuePenguin's September 2026 survey puts the average for New York City at $18 a month (for $30,000 of belongings and $100,000 of liability). The old $15 default cited a page that no longer exists. Move-in cash on /rent/ rises by $6 (two months of reserve), and the rent vs buy example shifts by about $500 over 30 years.
Affected: /rent/, /compare/, /rent-vs-buy/, /guides/rent-vs-buy-nyc/ · The change on GitHub ↗
Freddie Mac's weekly survey put the 30-year fixed at 7.28% as of October 1, 2026. Every calculator and pre-built page now starts from that rate, and guide worked examples were recomputed at it. Higher rates lower what income supports.
Affected: /coop/, /condo/, /compare/, /buy/, /income/, /neighborhoods/, /affordability-index/ · The change on GitHub ↗
Automated checks now watch Freddie Mac's rate weekly and HPD's AMI chart monthly, and open a proposed update when either changes. A person reviews every update before it reaches the site; nothing changes on its own.
Affected: /data/ · The change on GitHub ↗
The rent calculator and cost-to-move tool added a $500 building move-in fee to every lease signing. New York law bars landlords from charging that fee; it's a co-op or condo board charge.
What was wrong: Lease-signing cash on /rent/, /cost-to-move/, and every /rent/<price>/ page included a $500 "building / move-in admin fee".
What's right now: The fee defaults to $0 for renters (RPL §238-a(1)(a), added by the HSTPA in 2019), and is only for renting a unit in a co-op or condo building. Lease-signing totals dropped by $500. Co-op and condo buyers still pay their building's move-in deposit or fees.
Affected: /rent/, /cost-to-move/ · The change on GitHub ↗
The Required Salary calculator reused the married-filing-jointly threshold for single and head-of-household filers.
What was wrong: NY State's 6.85% bracket ran to $2,155,350 for every filing status, so income between about $1.08M and $2.16M (single) was taxed at 6.85% instead of 9.65%.
What's right now: The bracket ends at $1,077,550 for single filers and $1,616,450 for head of household, per the 2026 IT-2105-I worksheets. Only results above about $1.08M of income changed.
Affected: /required-salary/ · The change on GitHub ↗
The income limits behind affordable-housing eligibility were labeled as the figures HPD uses, but were about 22% lower than HPD's published 2026 chart.
What was wrong: 100% AMI for 3 people was $124,700 (4 people: $138,550), so households were shown at a higher AMI percentage than HPD would assign. A 3-person household earning $150,000 showed 120% AMI.
What's right now: The table now matches HPD's 2026 New York City Area AMI chart: $152,700 for 3 people and $169,600 for 4. That household is at 98% AMI. Bands, eligibility, and max rents per band moved with it.
Affected: /affordable/, /reality-check/, /guides/nyc-ami-housing-connect-explained/ · The change on GitHub ↗
The comparison dashboard and Reality Check had their own copy of the buying math, which left out private mortgage insurance.
What was wrong: Below 20% down, /compare/ and /reality-check/ overstated what you could buy. With the default profile at 10% down: co-op $386,066 and condo $511,957.
What's right now: Both now run the calculators' own engine, PMI included: $354,800 and $470,495 for that profile, matching /coop/ and /condo/. At 20% down or more, nothing changed.
Affected: /compare/, /reality-check/ · The change on GitHub ↗
The income and price pages summed three of the co-op calculator's five fixed closing fees.
What was wrong: Co-op closing costs and cash needed on every /buy/<price>/ and /income/<amount>/ page left out the $1,000 move-in deposit and $800 of other fixed fees. /buy/500000/ showed $154,923 of total cash.
What's right now: They now include all five fees, matching /coop/: /buy/500000/ shows $156,723. Condo figures were unaffected.
Affected: /buy/, /income/ · The change on GitHub ↗
Wording only; the math was right.
What was wrong: /sell/ and the seller closing-costs guide described the extra 0.25% on NYC residential sales of $3M or more as a city tax.
What's right now: It's a New York State "additional base tax" (NY Tax Law §1402(a)(2)). The amounts didn't change.
Affected: /sell/, /guides/nyc-seller-closing-costs-explained/ · The change on GitHub ↗
The calculators, Compare, Reality Check, and the pre-built income, price, and neighborhood pages now run the same code with the same defaults, so the same inputs give the same answer everywhere. Each default records its source and basis on the sources page.
Affected: /methodology/sources/ · The change on GitHub ↗
The starting mortgage rate on the co-op, condo, and comparison tools moved to 6.95%, and four new guides were added.
Affected: /coop/, /condo/, /compare/ · The change on GitHub ↗
The pre-built price pages computed condo closing costs without New York's mortgage recording tax, which the condo calculator already charged.
What was wrong: Estimated cash needed on /buy/<price>/ pages was low by about 1.8% to 1.925% of the condo loan amount.
What's right now: The tax is included, using the same function as /condo/. Co-ops don't pay it, so their figures didn't change.
Affected: /buy/ · The change on GitHub ↗
Affordable-housing income limits were updated for 2026. (These figures were later found not to match HPD's chart; see the October 3 correction.)
Affected: /affordable/ · The change on GitHub ↗