Local research · updated July 2026
Bay & bow windows in Marshall, Minnesota
Multi-unit assemblies that project outward — bay (3 units, angled) or bow (4–6 units, curved). For Marshall's mixed-age housing stock (55.9% of homes predate 1980), bay & bow window replacement is a common project — and in the ENERGY STAR Northern zone, the number that matters most is a low U-factor (≤ 0.22) to keep heat in.
Short answer
Bay & bow windows in Marshall typically cost $2,760–$8,830+ installed per opening. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand.
Market bands + BLS PPI, localized to Marshall (BEA Regional Price Parity, 2024). How we estimate →
$2,760–$8,830+
installed range per opening for Bay & bow window, from a mid-grade insert up to a premium or full-frame job
Source: Market bands + BLS PPI, localized to Marshall
55.9%
of Marshall homes were built before 1980
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
U ≤ 0.22
the ENERGY STAR v7.0 number that matters most in the Northern zone
Source: EPA ENERGY STAR v7.0
Is a Bay & bow window right for a Marshall home?
Fixed center with operable flankers (bay) or a curved run of units (bow).
Where it fits:
- Adding interior space, light, and a seat or shelf
- Street-facing façade upgrades
What to weigh:
- A structural project, not a swap — support, roofing, and insulation of the projection drive cost
- Highest cost band of common window projects
Bay & bow windows and Marshall's climate
Marshall sits in the ENERGY STAR Northern zone (IECC zone 6A (cold, moist), Lyon County), where the priority is a low U-factor (≤ 0.22) to keep heat in.
Because a bay or bow projects beyond the wall, its roof and floor are a thermal weak point — insulating that projection well matters as much as the glass for Northern-zone comfort.
New to these numbers? See our plain-English guide to U-factor and SHGC and the full bay & bow guide.
What Bay & bow windows cost in Marshall
Bay & bow window replacement in Marshall runs $2,760–$8,830+ installed. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand. Marshall is a small, rural installer market, and that cuts both ways: fewer competing crews than a big metro, but also older, simpler houses that quote cleanly. Two things move the number most. The first is the age of the stock -- with a median build year of 1976 and a majority of homes pre-1980, out-of-square openings, old wood or aluminum frames, and lead-paint precautions on pre-1978 homes all add labor a new-construction quote never sees, so insist on an in-person measure. The second is the glass and air-sealing package for the climate: a true ENERGY STAR Northern window (U-factor 0.22 or lower) with a low air-infiltration rating is a different product than a builder-grade unit, so make competing bids specify the same U-factor and air-leakage numbers before you compare bottom lines. On incentives, do not budget a rebate you cannot confirm in writing: the federal 25C tax credit expired December 31, 2025; Minnesota's IRA-funded Home Energy Rebates (the HEAR and HOMES programs, branded Save Energy Minnesota) were still awaiting federal approval and not yet open to homeowners as of mid-2026; and Marshall Municipal Utilities' residential rebates cover appliances, heat pumps, and water heating -- not windows as a standalone measure.
That's the national range shifted to Marshall's cost level using the BEA Regional Price Parity for Minnesota (statewide average) (98.6, U.S. = 100; 2024). How we estimate local costs →
For a breakdown by frame material and install type, see our full cost guide.
Installers serving Marshall
A sample of companies with locations in the Marshall market. See the full Marshall directory for all listings, our map, and featured-partner disclosures.
| Company | Location | Request a quote |
|---|---|---|
 4.8 · 200,000+ reviews | Marshall, MN | Get a quote → |
Renewal by Andersen
4.8 · 200,000+ reviewsMarshall, MN showroom · serving the Marshall metro
Full-service manufacturer and installer, transferable warranty, local crews. Why it's our Top Pick
Get a quote →Listings compiled from manufacturer dealer locators and public business records. Premier and Sponsored Partners pay for placement and are labeled as such; star ratings shown are reported by the partner, with the source and date beside them. See our advertising disclosure. Contacting a company shares your details with it (or a vetted local installer) so it can reach you about your project.
Are you a window company? Claim your listing to take quote requests from Marshall homeowners directly.
Rebates & incentives in Minnesota
The federal window tax credit (25C) ended for projects placed in service after December 31, 2025. If your windows were installed in 2025, you can still claim it on your 2025 return — but for new projects there is no federal window credit. State and utility programs are now the main source of window incentives.
Minnesota's IRA Home Energy Rebates (Save Energy Minnesota, administered by the Department of Commerce) were still awaiting federal DOE approval and not yet open to homeowners as of mid-2026. In the meantime, the live path is the utility Conservation Improvement Program (CIP): whole-home efficiency retrofits can include windows within a modeled-savings project. Confirm current status with Minnesota Commerce before counting on rebate dollars. See our Marshall guide for the full program list.
Bay & bow windows in Marshall: FAQ
›What efficiency numbers should a Bay & bow window in Marshall meet?
Marshall sits in the ENERGY STAR Northern zone (IECC 6A (cold, moist)). Qualifying units need a U-factor of 0.22 or lower with an SHGC of at least 0.17. Because a bay or bow projects beyond the wall, its roof and floor are a thermal weak point — insulating that projection well matters as much as the glass for Northern-zone comfort.
›How much does Bay & bow window replacement cost in Marshall?
A useful planning range for Bay & bow window replacement in Marshall is $2,760–$8,830+ installed. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand. Marshall is a small, rural installer market, and that cuts both ways: fewer competing crews than a big metro, but also older, simpler houses that quote cleanly. Two things move the number most. The first is the age of the stock -- with a median build year of 1976 and a majority of homes pre-1980, out-of-square openings, old wood or aluminum frames, and lead-paint precautions on pre-1978 homes all add labor a new-construction quote never sees, so insist on an in-person measure. The second is the glass and air-sealing package for the climate: a true ENERGY STAR Northern window (U-factor 0.22 or lower) with a low air-infiltration rating is a different product than a builder-grade unit, so make competing bids specify the same U-factor and air-leakage numbers before you compare bottom lines. On incentives, do not budget a rebate you cannot confirm in writing: the federal 25C tax credit expired December 31, 2025; Minnesota's IRA-funded Home Energy Rebates (the HEAR and HOMES programs, branded Save Energy Minnesota) were still awaiting federal approval and not yet open to homeowners as of mid-2026; and Marshall Municipal Utilities' residential rebates cover appliances, heat pumps, and water heating -- not windows as a standalone measure.
›Do I need a permit to replace Bay & bow windows in Marshall?
Replacement generally requires a permit, and new units must meet the current energy code. See our Marshall guide for local permitting and rebate details, and always confirm your installer pulls the permit.
Sources
- — U.S. Census Bureau, American Community Survey 5-Year Estimates (B25034, B25035)
- — EPA ENERGY STAR Version 7.0 Residential Windows specification
- — DOE/PNNL IECC climate zone assignments by county
- — NREL residential window cost analysis (planning ranges)