Next Door and Window

What Next Door and Window does

Next Door & Window is a family-owned, privately held window and door replacement contractor serving residential homeowners across the U.S. Midwest, with operations concentrated in the Chicago metropolitan area and extending into Madison, Wisconsin and St. Louis, Missouri. The company is a dealer-installer rather than a manufacturer, partnering with premium brands including Marvin (Signature, Elevate, Integrity), Infinity from Marvin (Ultrex fiberglass), and ProVia for entry, patio, and storm doors. Headquartered in Burr Ridge, Illinois and operating five showroom locations, the firm positions itself around Ultrex fiberglass windows — a material it markets as roughly eight times stronger than vinyl with a 30–50 year lifespan and a U-factor near 0.20 — and around proprietary service offerings such as the Full Frame 4 System installation methodology and the in-house NEXT Finish pre-finishing facility that disassembles windows for custom paint and stain before installation. Service is delivered through factory-certified internal installers, in-home and virtual consultations, and dedicated project managers, supported by ENERGY STAR and NFRC certifications and manufacturer warranties.

The company generates revenue primarily through one-time residential replacement projects, with an average ticket around $21,000 and per-window pricing ranging from roughly $1,500 for vinyl to $2,200–$4,000 for fiberglass, with financing available via 18-month interest-free plans. Customer acquisition is anchored by a multi-channel mix — local SEO, content marketing, social media across Facebook/Instagram/TikTok/Pinterest/Houzz, email, and referral — with management stating that over 50% of business comes from referrals and returning customers. Leadership is concentrated under founder and president Justin Bartley, who has been with the business for more than 30 years; the firm carries no disclosed institutional ownership, no public listing, and no funding rounds, and has accumulated a multi-decade track record of customer-service recognition including GuildMaster awards (2013, 2015, 2016, 2023, 2025), the BBB Torch Award for Ethics, Angie's List Super Service Award, and Crain's 2024 Best Places to Work in Chicago.

Name

Next Door and Window

Legal name

Next Door & Window

Website

https://nextdoorandwindow.com

Company type

Private

Founded year

1947

Operating status

Operating

Headcount range

101–250 employees

Short description

Next Door & Window is a family-owned residential window and door replacement contractor serving homeowners across Illinois, Wisconsin, and Missouri via five showrooms and certified installers of Marvin, Infinity, and ProVia products, with Ultrex fiberglass windows as its signature offering.

Ownership category

akta.pro rank

Product category

Window and Door Replacement Services

NAICS

Glass and Glazing Contractors (238150), Home Centers (444110)

SIC

Retail-Lumber & Other Building Materials Dealers (5211)

akta.pro primary industry

Window Replacement (Residential) (HSAPAJAA)

akta.pro secondary industries

Exterior Door Replacement (Entry/Patio/French) (HSAPAJAB), Storm Window & Storm Door Replacement (HSAPAJAG), Window & Door Frame/Sash Replacement (HSAPAJAF)

Keywords

• Window replacement services
• Door replacement installation
• Fiberglass windows
• Home improvement contractor
• Entry and patio doors

Headquarters

HQ city

Arlington Heights

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Window Replacement and Installation: One-time sale and installation of replacement windows including fiberglass, wood, and vinyl options. Revenue is generated per project with average window project around $21K. Includes full-frame replacement services.
2. Door Replacement and Installation: Installation of entry doors, patio doors, and storm doors from brands including Marvin, Infinity, and ProVia. Customization options include paint, stain, hardware, and decorative glass.
3. Pre-finishing Services: Custom paint and stain services for windows, doors, and trim performed in-house before installation. Maintains product warranties and eliminates odors in customer homes.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Next Door and Window sells and installs replacement windows and entry, patio, and storm doors for residential homeowners in the Chicago, St. Louis, and Madison markets. Offerings are sourced from manufacturer partners Marvin, Infinity from Marvin, and ProVia and emphasize Ultrex fiberglass windows, full-frame installation, and an in-house pre-finishing (NEXT Finish) service. Average window project value is approximately $21,000, with single windows ranging from $1,500 to $4,000 installed depending on material and style.

Product overview

Next Door and Window is a home improvement company offering window and door replacement services across the Chicago, St. Louis, and Madison areas. The company operates as a dealer and installer rather than a manufacturer, partnering with leading brands including Marvin Windows (Signature, Elevate, Infinity product lines) and ProVia for doors. Their product portfolio spans multiple window styles (double-hung, casement, picture, bay, bow, sliding, awning, corner, specialty shape) and door types (entry, patio, storm doors in various materials including fiberglass, steel, and wood). Key differentiators include their use of Ultrex fiberglass technology (8x stronger than vinyl), in-house pre-finishing/painting services (NEXT Finish), Full Frame 4 System installation method, and home visualizer technology. They emphasize fiberglass windows for their durability (30-50 year lifespan), energy efficiency, and minimal maintenance compared to vinyl or wood alternatives.

Differentiator

Problem solved

Functional benefit

Products and services

• Replacement Window Sales and Installation End-to-end window replacement service for residential homeowners: consultation, sourcing from manufacturer partners (Marvin, Infinity from Marvin), custom pre-finishing, and full-frame installation by factory-trained and certified internal teams. Available in fiberglass, wood, and vinyl materials, with Low-E glass, insulated glass units, and specialty glass options. Average project value approximately $21,000.
• Replacement Door Sales and Installation Sale and installation of entry doors, patio doors, and storm doors for residential homeowners, available in fiberglass, steel, and wood with customization options for paint, stain, hardware, and decorative glass. Sourced from Marvin, Infinity from Marvin, and ProVia, with custom bottom sweeps, dual perimeter seals, and insulation channels for energy efficiency and security.
• NEXT Finish Pre-finishing Service In-house custom paint and stain finishing performed before installation: products are fully disassembled and coated with two coats of polyurethane for stained finishes or matched paint, preserving manufacturer warranties and eliminating finishing odors inside the customer's home. Available for windows, doors, and trim.
• Full Frame 4 System Installation Full-frame replacement installation service that removes the entire existing window or door frame, trim, and surrounding materials and installs a brand-new frame and trim for maximum energy savings and a superior finished appearance. Executed by factory-trained and certified internal installers with dedicated project managers providing weekly updates.

Quantifiable outcome

• Windows can last 30-50 years with fiberglass material vs 15-30 years for vinyl
• +3 more outcomes

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Six partnerships are on record, tiered core and supporting.

• Marvin WindowscoreChannel Partner/ Reseller/ DistributorMarvin is a primary brand partner offering Signature, Elevate, and Integrity window lines. NEXT Door & Window is a Marvin Certified Installing Retailer (CIR). Products feature wood interiors and fiberglass or aluminum exteriors with various style options.
• Infinity from MarvincoreChannel Partner/ Reseller/ DistributorInfinity from Marvin is an Infinity Diamond Partner offering Ultrex fiberglass windows that are 8x stronger than vinyl. Features include fade-resistant acrylic finish and excellent energy efficiency with U-factor around 0.20.
• ProViacoreChannel Partner/ Reseller/ DistributorProVia is a door manufacturer partner providing fiberglass and steel entry doors with features including insulation channels, dual perimeter seals, and custom bottom sweeps for energy efficiency and security.
• GuildQualitysupportingGTM or Marketing PartnerCustomer review and feedback platform. NEXT Door & Window has received multiple GuildMaster Awards through GuildQuality, and uses the platform to collect and display customer testimonials.
• BBB (Better Business Bureau)supportingGTM or Marketing PartnerAccredited business with BBB. Has received Torch Award for Ethics. Accreditation serves as trust signal for customers.
• HomeAdvisorsupportingGTM or Marketing PartnerHomeAdvisor is a lead generation platform. NEXT Door & Window is listed as Top Rated on HomeAdvisor with positive customer reviews.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Window World: Largest U.S. window replacement franchise with hundreds of locations nationwide. Competes head-to-head in the residential replacement category with a similar showroom-plus-in-home consultation model, although Window World is more value-tier vinyl-focused rather than premium fiberglass.
• Feldco: Midwest-based window, door, and siding replacement specialist headquartered in the Chicago region. Directly comparable in geography (IL, WI, IN, MO), customer base (residential homeowners), product mix, and consultative showroom-driven GTM motion.
• Champion Windows: National manufacturer and installer of replacement windows, doors, sunrooms, and roofing. Direct peer in residential replacement with company-owned showrooms, in-home sales, and full-service installation; serves similar middle-to-upper income homeowner segment.
• Thompson Creek Window Company: Mid-Atlantic based window and door replacement specialist with company-owned manufacturing and direct-to-consumer installation. Direct peer in premium replacement, factory-trained installers, and consultative in-home selling model.
• Renewal by Andersen: National full-service window and door replacement specialist that sells and installs proprietary products via company-owned and franchise branches. Directly comparable business model to Next Door and Window: in-home consultation, certified installers, premium positioning, and full-frame replacement.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/nextdoor_window
• YouTubeyoutube.com/channel/UCkWyrl2zhO6pNbG3POF6XEQ
• Facebookfacebook.com/NEXTDOORWINDOW
• LinkedInlinkedin.com/company/next-door-&-window
• Instagraminstagram.com/nextdoorandwindow/?hl=en
• Pinterestpinterest.com/NEXTdoorandwindow
• TikToktiktok.com/@nextdoorandwindow

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Next Door and Window