The result is built entirely from a 2026 This Old House survey of 1,000 homeowners who completed a replacement [W1]. It is a national survey average, not a quote, and not a Wisconsin price.
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Survey average: about $4,150
This is a national survey average from a 2026 This Old House survey of 1,000 homeowners [W1]. It is not a quote, not a local price and not a Wisconsin average. Only a contractor who sees your windows can price your job.
For reference, the same survey put the overall national average at $517 per installed window and the average total project at $7,183 [W1].
How the estimate is built
The calculator takes the survey average for the frame material you picked and the survey average for the window type you picked, and uses the lower of the two as the bottom of the range and the higher as the top, multiplied by your window count [W1]. Pick "not sure yet" for either and it uses the overall $517 average [W1].
Nothing else is added. There is no Wisconsin multiplier, no local adjustment and no markup, because we have no source good enough to justify one.
What the estimate leaves out
- The condition of your openings. Rot, failed sills or masonry repair can change a job completely, and is often only found when the old unit comes out.
- Insert versus full-frame. The survey averages do not separate the two.
- The glass package. Cold-climate glazing, low-E coatings and gas fill cost more than clear double glazing. See double pane vs triple pane.
- Access. Upper storeys, steep roofs and tight lot lines cost more in labour.
- Disposal, trim and interior finishing.
- Permit fees, which your local building department sets. See window permits in Wisconsin.
- Any rebate. The Focus on Energy rebate has strict dates and a before-purchase reservation requirement [W2], so do not subtract it from a budget in advance.
Get a real number
Only a contractor who sees your windows can price the job. Request quotes and an independent local contractor may contact you about your project, or read the cost guide first.
A referral is not an endorsement, so check any contractor yourself before you sign.
We're a referral service, not a contractor, and independent contractors may pay us for referrals.