Local research · updated July 2026
Bay & bow windows in Hattiesburg, Mississippi
Multi-unit assemblies that project outward — bay (3 units, angled) or bow (4–6 units, curved). For Hattiesburg's mixed-age housing stock (50.4% of homes predate 1980), bay & bow window replacement is a common project — and in the ENERGY STAR Southern zone, the number that matters most is a low SHGC (≤ 0.23) to block solar heat.
Short answer
Bay & bow windows in Hattiesburg typically cost $2,455–$7,845+ 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 Hattiesburg (BEA Regional Price Parity, 2024). How we estimate →
$2,455–$7,845+
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 Hattiesburg
50.4%
of Hattiesburg homes were built before 1980
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
SHGC ≤ 0.23
the ENERGY STAR v7.0 number that matters most in the Southern zone
Source: EPA ENERGY STAR v7.0
Is a Bay & bow window right for a Hattiesburg 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 Hattiesburg's climate
Hattiesburg sits in the ENERGY STAR Southern zone (IECC zone 2A (hot, humid), Forrest County), where the priority is a low SHGC (≤ 0.23) to block solar heat.
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 Southern-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 Hattiesburg
Bay & bow window replacement in Hattiesburg runs $2,455–$7,845+ 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. University-market pricing is competitive. Federal 25C is gone. Itemize NFRC numbers and permit.
That's the national range shifted to Hattiesburg's cost level using the BEA Regional Price Parity for Hattiesburg, MS (87.6, 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 Hattiesburg
A sample of companies with locations in the Hattiesburg market. See the full Hattiesburg directory for all listings, our map, and featured-partner disclosures.
| Company | Location | Request a quote |
|---|---|---|
| 1Window World of HattiesburgWindow World | Hattiesburg, MS | Get matched → |
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 Hattiesburg homeowners directly.
Rebates & incentives in Mississippi
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.
Mississippi's IRA Home Energy Rebates are administered through the Mississippi Development Authority Office of Energy (Energy & Natural Resources). As of mid-2026 consumer-facing HOMES/HEAR pathways were not clearly open for standard single-family window projects — treat status as pending and confirm at mississippi.org / MDA Office of Energy before promising rebate money. Windows would generally fit only inside a whole-home modeled-savings track when programs launch, not as a retail per-window check. See our Hattiesburg guide for the full program list.
Bay & bow windows in Hattiesburg: FAQ
›What efficiency numbers should a Bay & bow window in Hattiesburg meet?
Hattiesburg sits in the ENERGY STAR Southern zone (IECC 2A (hot, humid)). Qualifying units need a U-factor of 0.32 or lower and an SHGC of 0.23 or lower. 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 Southern-zone comfort.
›How much does Bay & bow window replacement cost in Hattiesburg?
A useful planning range for Bay & bow window replacement in Hattiesburg is $2,455–$7,845+ 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. University-market pricing is competitive. Federal 25C is gone. Itemize NFRC numbers and permit.
›Do I need a permit to replace Bay & bow windows in Hattiesburg?
Replacement generally requires a permit, and new units must meet the current energy code. See our Hattiesburg 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)