Company Facts
Allstate Windows & Siding at a Glance
The work
- Best for
- Replacing siding and windows together through a three-generation family firm
- Primary service
- Windows and doors
Where
- Headquarters
- Houston, TX
- Service area
- Houston
- Emergency service
- Not advertised
Money and guarantees
- Free estimates
- Not advertised
- Financing
- Available
Credentials
- License number
- Not published
Editorial Review
Our Take on Allstate Windows & Siding
Allstate Windows & Siding is the pick for homeowners who want windows and siding handled together by a long-running Houston family firm. Its product range is narrower than the brand-neutral showrooms, and the listed address is an office suite.
Best forReplacing siding and windows together through a three-generation family firm
What We Like
- Founded in Houston in the 1970s by James C. LaGrappe Sr.
- Run today by three family members: James Sr., Jimmy Jr. and Mary
- Vinyl, aluminum and impact resistant windows plus patio doors and replacement doors
- James Hardie, vinyl and engineered wood siding handled by the same company
- 4.7 stars from 189 Google reviews, read November 3, 2026
Things to Consider
- The site centers on its own vinyl and aluminum lines rather than premium brand choice
- The listed address is an office suite, and a second address appears on the site footer
- The site publishes no warranty terms or financing details
Customer Ratings
Google Reviews for Allstate Windows & Siding
Customer ratings shown here come from Google. They are separate from our editorial review above.
Rating Distribution
- 5 stars87%
- 4 stars4%
- 3 stars3%
- 2 stars2%
- 1 star4%
iAbout this distribution
The distribution reflects the 189 Google reviews available when this profile's review data was last refreshed on November 8, 2026. Ratings and counts change continuously on Google, so figures here may lag the live profile slightly. We publish only the values returned by the source, never estimates for missing bands.
Recent Google Reviews
Editorial Ranking
Why Allstate Windows & Siding Made Our Top 5
It holds position 4 in 5 Best Siding Companies in Houston, TX (2026).
Areas Served
Based in Houston, TX.
iAbout service coverage
Coverage is as the business describes it, cross-checked against where its recent documented work is. A company will often travel beyond the areas listed here for a large job and decline a small one at the same distance, so confirm your address before scheduling.
Company Background
About Allstate Windows & Siding
Allstate Windows & Siding has the longest family history on this list. Founder James C. LaGrappe Sr. began his career in the 1970s selling windows and vinyl siding door to door in Houston, and he passed his experience to his son, Jimmy LaGrappe Jr., and his daughter, Mary LaGrappe. The three are described on the company site as the driving force behind the business, which calls itself the oldest family-owned and operated siding and window company in Texas and says it has been in business more than 50 years.
The office is at 5750 Bintliff Drive, Suite 200, in southwest Houston, and the site lists a second address on Hollister in northwest Houston. Hours are Monday to Friday from 8 am to 5 pm and Saturday from 8 am to 1 pm. The company serves Houston, Sugar Land, Katy, Galveston and The Woodlands.
On the window side the product list covers vinyl windows, aluminum windows and impact resistant windows, plus patio doors and replacement doors. Siding is the other half of the business, with James Hardie fiber cement plank, vinyl and engineered wood siding. That mix helps homeowners who want one crew to handle windows and siding on the same house, and the site says the products are installed by certified installers and that financing is available.
Allstate holds 4.7 stars from 189 Google reviews, read November 3, 2026. The about page says the majority of its sales come from previous customers and referrals, which is a useful sign for a company that has been in the Houston market this long.
The company suits homeowners who want windows and siding replaced together by an established family firm. It suits less well anyone who wants a wide choice of premium window brands, since the site centers on its own vinyl and aluminum lines, and anyone who wants a staffed storefront, because the listed address is an office suite. Before booking, ask for a written quote that names the product line and glass package for each opening, ask whether your project needs a City of Houston permit, and for a house built before 1978 ask for the firm's EPA lead-safe certificate number. Texas has no state licence for window installers, so also ask for proof of insurance.
iWhere this information comes from
Company history, ownership and capability details on this page are provided by the business and reviewed by our editors for plausibility and consistency. They are not the same as the credentials block, where each item carries its own verification status and source.
Other Sources
Reputation by Source
We show each source separately rather than blending them into a single score, because they measure different things.
Pricing
Company Pricing & Estimates
What this company publishes about its own pricing.
- Financing
- Available
Gallery
Project Photos
Business-submitted, reviewed by our editors
Compare
Similar Windows & Doors in Houston
Longhorn Windows and Roofing
4.9(97 Google reviews)Southeast Houston homeowners who want single-visit advice on windows and a roof · HoustonRanked #4View profileWindow World of Houston
4.8(5329 Google reviews)Insulated vinyl siding with financing and a lifetime warranty on siding · HoustonRanked #1View profileThe Window Experts
4.8(298 Google reviews)Comparing Pella, Andersen, Marvin and other brands with one installer · HoustonRanked #2View profileSouthern Front Stained Glass & Door Inc.
4.7(155 Google reviews)Custom wood and forged iron front doors with before-and-after install photos · HoustonRanked #3View profile
Allstate Windows & Siding FAQs
Is Allstate Windows & Siding licensed in Texas?
Texas has no state licence for window or siding installers, so there is no licence number to look up. The company site does not list a licence or certification number. Ask for proof of insurance and written terms, and for a home built before 1978 ask for the firm's EPA lead-safe certificate number.
What are Allstate Windows & Siding's hours?
The office at 5750 Bintliff Drive, Suite 200 is open Monday to Friday from 8 am to 5 pm and Saturday from 8 am to 1 pm, and it is closed Sunday. The company does not advertise emergency service, so book an estimate during those hours.
Which areas does Allstate Windows & Siding serve besides Houston?
The site says the company serves the greater Houston area, including Sugar Land, Katy, Galveston and The Woodlands. It advertises financing but does not publish terms, so ask for the rate and monthly payment in writing, along with the warranty on both the product and the installation.
Is Allstate Windows & Siding licensed and insured?
We have no credential records on file for this company yet. Ask for the certificate directly from the insurer before booking work.
What areas does Allstate Windows & Siding serve?
Houston. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.
Does Allstate Windows & Siding offer emergency service?
Emergency availability is not listed for this company. If you need an urgent call-out, check the ranking for companies that do list it.
What warranty do they offer?
Warranty terms are not on file. Ask for them in writing before work starts.
How was this profile built?
Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.
Can a business pay to improve its profile?
A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.
Is Something Incorrect?
Business information changes. Tell us about an address, phone, website, service area, credential or ownership change, or let us know if this company has closed.
Suggest an UpdateOwn Allstate Windows & Siding?
Claim your profile to verify and maintain your business information, services and service area.
iWhat claiming does
Claiming lets you correct and maintain the factual information on this profile. Claiming or upgrading a profile does not guarantee inclusion in a TenBestFind ranking and never affects ranking position, which is decided editorially.
About This Business Profile
- Last reviewed
- November 2026
- Profile last updated
- November 11, 2026
- Google review data updated
- November 8, 2026
- Sources checked
- Google Business Profile, Company website
- Could not verify
- License (none published), insurance, founding year
- Sponsorship status
- No commercial relationship