How much does window replacement in St. Paul cost in 2026?
Modern Exterior Systems (Modex) installs ProVia, Kolbe, and Pella windows across St. Paul. A lot of this city was built before 1940 — the wood double-hungs in Summit Hill, Crocus Hill, Mac-Groveland, and Highland Park are beautiful and almost always single-pane, drafty, and a few coats of paint away from sealed shut. Most full-house St. Paul window replacements run $25,000 to $108,000 on an average 18-window home in 2026, depending on line and glass package. ProVia Endure at the value tier ($1,400–$2,500/window). Kolbe Heritage for true historic restoration, when the sightlines have to match the original ($2,500–$6,000/window installed). Pella spans every tier from 250 Series through Reserve.
Updated May 2026 · Reviewed by Joe Dvorak, Owner, Modern Exterior Systems

Approach
Three premium window brands, deliberately chosen
Modex installs ProVia, Kolbe, and Pella windows because they deliver triple-pane Low-E performance, frame durability through Minnesota winters, and warranty depth that protects your investment for decades. We do not install commodity brands or offer bait-and-switch pricing—every window we quote meets the same performance standard.


Performance
Triple-pane Low-E glass handles Minnesota winters
At -20°F, double-pane windows lose significant heat. Triple-pane Low-E with argon or krypton fill is the baseline on every Modex full-house quote. This glass standard applies across ProVia, Kolbe, and Pella—no exceptions for budget projects.
Argon-filled chambers
Low-E coating reduces heat loss
Meets IRA 25C tax credit requirements
Brands
ProVia, Kolbe, and Pella at a glance
Three brands, three buyers. What each one is best at and where it lands on price.
Federal tax credit for energy-efficient windows
The IRA 25C tax credit gives Twin Cities homeowners a 30% tax credit (up to $600 per year) on qualifying ENERGY STAR-rated windows. Triple-pane Low-E windows from ProVia, Kolbe, and Pella all qualify. Note: siding does not qualify for IRA 25C; the credit is window, door, insulation, and HVAC specific.

Investment
Window replacement cost ranges
Broad cost bands per brand. Final number depends on window count, product line, glass package, and any custom-grille work. See the full cost breakdown for line-by-line detail.
ProVia
$15K–$45K
Full house · 8–20 windows
Aspect & Endure vinyl lines
Triple-pane Comfort-Tech Low-E standard
Strong custom-color program
Per-window $1,400–$3,000
IRA 25C tax credit eligible
Why choose
Three reasons Modex stands apart
Premium brands. Replacements that look like they belong. Warranties that outlast the trim.

Reason
Three premium brands, no commodity swap
Modex installs ProVia, Kolbe, and Pella because they deliver triple-pane Low-E performance and frame durability through Minnesota winters. We do not stock or quote commodity-tier vinyl. Every quote — Aspect to Heritage to Reserve — meets the same install and warranty standard.

Replacements that look like they belong
On older homes — 1920s craftsman bungalows in Linden Hills, Tudor restorations in Edina Country Club, lake-corridor customs in Wayzata — plain replacement windows make a house look wrong. We measure the original divided-light pattern and order new windows that match it, so the replacements read as original architecture, not as a budget swap.

Lifetime workmanship on a 5–10 year industry standard
Most window installers warranty workmanship for 5 to 10 years. Modex backs every residential window install for as long as you own the home. Material warranties from ProVia, Kolbe, and Pella are registered in your name and transferable per the manufacturer's terms if you sell.

Free estimate
Modex walks through your home, measures every opening, and discusses brand fit. No pressure, no sales pitch. See /our-process for the full timeline.
Custom quote
We build a detailed quote with brand, product line, glass options, and IRA 25C tax credit eligibility. Pricing is transparent—no hidden fees.
Professional install
Modex crews handle removal, frame prep, installation, and cleanup. Most full-house jobs complete in 5–7 business days.
Recent installs
Kolbe Heritage on a Country Club Tudor restoration, ProVia Endure on a Bearpath walkout, Pella Reserve on a Wayzata lake home—each selected for neighborhood character and performance demands.






What Twin Cities homeowners say
BBB-verified reviews from Modex customers across the Twin Cities metro. Full review archive on BBB and /reviews.
“Joe was very knowledgeable and patient in his explanation. His crew showed up and completed the project in one day despite having to replace a few boards. The roof looked very nice when finished and the old noisy roof vent fans were replaced with multiple low-profile silent vents. Very happy father and son afterwards.”
Marine P.
Twin Cities homeowner · 2024 · BBB Verified Review
“Very thorough and quick to respond. Rachel responded within an hour of my reaching out and was there the same day to investigate the issue. She also followed up via phone to assure me all was ok. Highly recommend Modern Exterior and in particular Rachel. In today's society, customer service in general is severely lacking — let alone same-day response.”
Dave R.
Twin Cities homeowner · 2024 · BBB Verified Review
“Joe from Modern Exterior Systems and his crew were excellent at communicating their timeline. They were responsive to my initial inquiry and did excellent work on my mom's roof. She appreciated Joe stopping by to update her on the project's status. There are a lot of roofing options out there. But nobody communicates better than Modern Exterior Systems. Fair price. Solid workmanship.”
Nate G.
Twin Cities homeowner · 2023 · BBB Verified Review
“My daughter had some storm damage and needed some work done. Kiki came through with efficiency in a professional and knowledgeable manner. She explained and answered all of our questions before putting on new shingles. The work was flawless. I highly recommend Kiki and Modern Exterior Systems!”
Aaron K.
Twin Cities homeowner · 2025 · BBB Verified Review
“Good job on the roof and did a great job with the insurance company too.”
Gary A.
Twin Cities homeowner · 2023 · BBB Verified Review
“Great job and workmanship — workers picked up everything. Thank you.”
Greg R.
Twin Cities homeowner · 2023 · BBB Verified Review
St. Paul window FAQ
Common St. Paul window replacement questions
Honest answers about 2026 cost ranges, install timelines, permits, and brand fit. The questions Twin Cities homeowners actually ask before they book a quote.
How much does window replacement in St. Paul cost in 2026?
Most full-house St. Paul window replacements run $25,000 to $108,000 on an average 18-window home in 2026. Per-window pricing: ProVia Endure $1,400–$2,500, Pella 250 Series $1,400–$2,500, Kolbe Forgent $2,500–$3,500, Pella Architect Series $2,500–$4,500, Pella Reserve $3,500–$5,500, Kolbe Heritage $2,500–$6,000 installed. Full-house cost depends on count (most St. Paul homes have 15–35 windows, ~18 on average) and product line. Want to sanity-check a quote? Read how to measure a window for replacement for the same method we use on a free in-home visit.
How long does window installation take in St. Paul?
Most full-house St. Paul window replacements take 2–5 days. A standard 15–20 window home is typically a 2–3 day install. Larger 25–35 window custom homes take 4–5 days. We install in shoulder seasons (spring, fall) when we can — the temperature extremes outside that window affect how spray-foam insulation cures around the frames.
ProVia vs Kolbe vs Pella — which is best for St. Paul?
ProVia is the value/durability sweet spot for most St. Paul homes — strong climate ratings, true lifetime warranty, $1,400–$6,000/window. Kolbe is the premium architectural choice — best for 1920s craftsman restoration, modern custom builds, and homes where window detail matters. Pella spans every tier — 250 Series for budget through Reserve for high-end. We'll spec the right brand for the home, not the brand with the deepest dealer kickback. Read our honest contractor review of ProVia windows for the full breakdown.
Do I need a permit to replace my windows in St. Paul?
Almost always, yes. In St. Paul, window-replacement permits run through the City of Saint Paul Department of Safety & Inspections (DSI), and you need one any time the window or frame is replaced — including same-size pocket inserts. The common exemptions are glass-only repairs, storm windows, and hardware fixes — see our window repair page for fogged-IGU and hardware scopes. Resizing openings, changing egress, or anything touching a basement bedroom always needs a permit and inspection — and on a designated historic property, exterior changes can trigger Heritage Preservation Commission review. We pull and include permits in the line-item quote — full breakdown in our MN window-permit guide.
Are Pella windows better than ProVia for Minnesota winters?
Both handle Minnesota's −20°F to 95°F climate well — that's table stakes for either brand on a Modex quote. ProVia carries a true lifetime warranty on most lines. Pella has a broader product range and showroom availability. Both offer triple-pane Low-E with argon or krypton fill. The “better” depends on aesthetic, budget, and how long you plan to stay in the home — not on -20°F performance.
More questions about your St. Paul windows?
Call Joe at 952-206-6339 or request a free St. Paul quote — written line-item, no high-pressure follow-up.
Ready to start?
Free St. Paul window estimate within 48 hours
Call Joe at 952-206-6339 or request a free St. Paul quote. Crew lead — or Joe on projects over $40,000 — on the property within 24 to 48 hours. Written line-item quote within 48 hours of the visit.


About Modex windows
Three premium window lines under one installer
Modex is a women-owned, family-operated roofing and exterior contractor based in Eden Prairie, Minnesota. The window division installs ProVia, Kolbe, and Pella across St. Paul, the western metro suburbs, and the broader Twin Cities region. Roofing and siding too — see our full St. Paul services. We install — we're not Authorized Dealers for any window brand; the manufacturer warranty registers direct to the homeowner regardless of the installer label.
Five manufacturer certifications on the roofing side: CertainTeed ShingleMaster, Malarkey Emerald Pro, Atlas Pro+ Silver Select, LP SmartSide Preferred, James Hardie Preferred. BBB Accredited A+. NRCA Member #1016569. MN License #BC762305. Lifetime workmanship warranty on every residential install, including windows.
Reviewed by Joe Dvorak, Owner, Modern Exterior Systems · Updated May 2026
Further reading
Deeper writeups on the topics this page covers — written for homeowners by a Twin Cities installer.

March 22, 2026
ProVia Windows Reviews: A Minnesota Contractor's Honest Take (2026)
MN contractor reviews ProVia windows — Endure, Aspect, Aeris. Honest comparison to Pella, Andersen, Marvin with installed pricing. 952-206-6339.

May 31, 2026
Pella Windows Review: A Twin Cities Contractor's Honest Take (2026)
A Twin Cities contractor reviews Pella windows - every line, real installed pricing, what I like and don't, and how Pella compares to ProVia and Kolbe.

May 31, 2026
Kolbe Windows Review: A Twin Cities Contractor's Honest Take (2026)
I install Kolbe windows in Twin Cities homes. Honest review — quality, cost, lead times, and how Kolbe stacks up against Pella Reserve and Marvin.

April 11, 2025
Is ProVia the Same as Pella? Clearing Up the Confusion
ProVia vs Pella windows compared by a MN contractor: manufacturing, pricing, warranty, which brand performs better in our climate.

May 31, 2026
Marvin vs ProVia Windows: A Twin Cities Contractor's Honest Comparison
MN contractor compares Marvin vs ProVia windows — cost, warranty, lead times, and which is the right fit for Twin Cities homes. Call 952-206-6339.

May 31, 2026
Andersen vs Pella Windows: A Twin Cities Contractor's Honest Comparison
Twin Cities contractor compares Andersen vs Pella windows head-to-head: cost, warranty, thermal performance, and what I'd actually pick for MN homes.


