If you’re searching for the best cellar door company in Connecticut, you’ve probably already discovered that the market is thin. There’s no shortage of handymen and general contractors who will install a Bilco-style door. There are very few companies that specialize in this work, back it with real credentials, and stand behind the installation long after the truck leaves your driveway.
We’re Connecticut Cellar Doors, and we’re going to do something unusual here: we’re going to tell you honestly what to look for in any cellar door company — including what to look for in us. If another company beats us fair and square on those criteria, you should hire them. That’s what honesty looks like.
What Separates a Great Cellar Door Company from an Average One
1. Licensed and Insured?
Connecticut requires a Home Improvement Contractor license for this type of work. Ask for the license number and verify it at the CT Department of Consumer Protection website. We’re licensed (CT License #0644013), insured for $2 million in liability and workers’ compensation, and BBB Accredited with an A+ rating. Any company you hire should show you the same credentials.
2. Specialists or Generalists?
We do one thing: basement entry systems. Cellar doors, bulkheads, egress windows, bottom entry doors, basement windows, and stairs. Not kitchens. Not roofing. That specialization means our entire training, tooling, product knowledge, and warranty infrastructure is built around this specific type of work. A general contractor who installs a cellar door on the side cannot offer that depth — or that accountability.
3. Will They Assess Your Home Before Quoting?
A legitimate company visits your home before giving a price. If someone quotes you over the phone, they cannot know what your foundation masonry looks like, whether drainage is causing the problem, or whether your opening is a standard size. A phone quote is a guess. An on-site assessment is a real number — see our honest breakdown of what affects cellar door pricing in CT.
4. What Does Their Warranty Actually Cover — and Is It in Writing?
‘We stand behind our work’ is not a warranty. Ask specifically: how many years, what’s covered, does it include labor, and get it in writing before you sign anything. Our warranty is the most comprehensive available in Connecticut: 10-year structural manufacturer’s warranty, 2-year workmanship guarantee, plus our Like a Family Member and Better Than We Found It guarantees.
5. Do They Answer Their Phone?
In our industry, responsiveness is genuinely rare. If a company doesn’t answer before the sale, they won’t answer after. We answer our phones. We show up on time, every time. We call back when we say we will. This consistency is reflected in our 250+ five-star Google reviews, and it matters more than most homeowners expect until they try to chase down a post-installation problem with a company that’s moved on.
6. Will They Leave Your Property Better Than They Found It?
Ask any contractor what happens if the work site isn’t cleaned up properly when they’re done. We have an answer: we come back and clean up, and we give you $100 for the inconvenience. That’s our ‘Better Than We Found It’ guarantee — in writing.
Who Operates in the Connecticut Market
Connecticut Cellar Doors (That’s Us) — ctcellardoors.com
The largest cellar door specialist in New England. 10,000+ installations since 2002. The only company in Connecticut with a custom-welded door product and an optional 6-step powder coating protection process. Licensed, insured, BBB A+. We install Bilco, Gordon, and our own custom welded doors — recommending what’s right, not what costs more. Company-trained technicians that are employees — not contractors. We install over 900 per year.
Budget Dry Waterproofing (CT & MA) — budgetdry.com
A waterproofing company that installs cellar doors as part of broader basement solutions. If your issue is primarily water intrusion with a waterproofing component, they may be worth a conversation. Cellar door work is a secondary service for them, not their core specialty. Often times waterproofing companies will refer work to us for quality basement entry installations.
Non-Specialized General Contractors
The majority of quotes Connecticut homeowners receive come from non-specialized general contractors who do not focus on the installation of cellar doors. Specialization, masonry quality, and warranty depth vary greatly. Often times work is subcontracted. They are unable to do custom door sizes on their own. In fact, often times general contractors that do install hatchway doors get their doors from us.
Handymen
Jack of all trades. Can be good for simple replacements with no customization on door sizes. It’s not their specialty. Experience ranges wildly. May have installed 1 or 2 in their lifetime. No warranties on their work.
What Our Customers Say
We have 250+ five-star Google reviews. Here is a representative sample — patterns matter more than any single review:
My experience with CT Cellar Doors was fantastic from start to finish. From the original quote to the day of install, communication was clear, concise and friendly. The technicians were extremely considerate and respectful of the property. They took great care when doing their work, and left without a single trace of evidence that anyone had been there! Excellent experience.
Had a wonderful experience with CT Cellar Doors. The crew came at the time they said. They completed demolition of the old structure then built it back up correctly and installed the door within the same day. The workers were extremely personable, knowledgeable and answered any questions I had. Couldn’t recommend this company any higher.
Major upgrade from our previous basement doors. The two-person crew did a great job. They were courteous and professional. Explained everything, worked neatly and efficiently. The installation went smoothly and the finished product looks great — secure, water tight and very sharp with powder coated doors. I would absolutely recommend them to anyone in need of new basement doors.
Everyone we dealt with was great and the install went off without a hitch. We highly recommend CT Cellar Doors!
Ten. Pleasure doing business with your staff and the installers were great. On a scale of 1 to 10 where 10 is the best, they were a 12.
The patterns across our 250+ reviews: we show up on time, we do exactly what we said we would, the installers are professional and knowledgeable, the cleanup is thorough, and the quality surprises people who expected it to be just a basic replacement. Those aren’t aspirational goals — they’re the baseline we hold our team to on every single job.
How to Evaluate Any Company Before Hiring
- Verify their CT Home Improvement Contractor license at the CT DCP website
- Ask for proof of liability insurance and workers’ compensation
- Read their Google reviews — the patterns in the actual text, not just the star average
- Insist on an on-site visit before any price is given
- Get the warranty in writing before signing anything
- Ask specifically: do you do masonry? Do you install foundation plates as needed? What if it leaks after you leave?
- Ask what happens if my property isn’t left clean — and see if they have a specific answer
- Call them — see if a real person answers
Frequently Asked Questions
- Is Connecticut Cellar Doors the only specialist in the state?
- We’re the largest and most established specialist, but not the only company doing this work. Our differentiators are scale (10,000+ installs since 2002, and averaging 20-40 installs weekly as of 2026), product exclusivity, warranty depth, and 23+ years of focused experience — including the only fully welded steel door and 6-step powder coating available in CT.
- What if I got a bad installation from another company? Can you fix it?
- Yes. We fix other companies’ bad installs every single week. We’ve replaced thousands of incorrectly installed doors over our 23 years in business. We assess the full situation, explain what was done incorrectly and why, and quote the correct fix. Call us — we’ll be straight with you.
