Call us now and we'll work to schedule a technician the same day, across every trade we handle.
Book A ServiceAutomatic Door Installation in Londonderry, NH
Residential & Commercial Automatic Door Installation Across Londonderry
Cornerstone Services installs automatic doors for residential and commercial properties throughout Londonderry, NH. We handle all three primary door types: automatic sliding doors, automatic swinging doors, and revolving doors. The same team that manages our electrical, plumbing, and structural work manages your door installation, and everything falls under one signed workmanship warranty with one per-job price. Automatic door installation is part of our dedicated Home Modifications division, which also includes wheelchair ramp installation, grab bar installation, stairlift installation, kitchen modifications, and smart home setup. If your project touches multiple trades, we don’t hand you off to another contractor. We handle it from start to finish.
Call (603) 874-1402 to schedule your automatic door installation in Londonderry today.
Automatic Door Types We Install
Every installation starts with a property assessment. We look at the space, traffic volume, existing architecture, and any accessibility requirements before recommending a door system. That assessment shapes the entire project plan.
- Automatic Sliding Doors: The most common choice for high-traffic commercial entries and retail fronts. Sliding doors maximize the clear opening width and operate without user contact, making them a strong fit for ADA-accessible routes in busy commercial spaces.
- Automatic Swinging Doors: Including low-energy power-operated options, swinging doors are frequently specified for ADA-accessible routes in offices, healthcare facilities, and multifamily buildings. They integrate cleanly into existing single- or double-door openings.
- Revolving Doors: A strong option where climate control or energy efficiency at the entry point is a priority. Revolving doors reduce air exchange at building entries and are common in larger commercial or institutional settings.
Every installation includes motion sensors, safety edges, and emergency stop functions as standard safety features, consistent with ANSI/BHMA standards for automatic pedestrian doors. Our technicians clean up completely when the work is done.
Why Londonderry Property Owners Call Cornerstone Services
There’s no shortage of contractors who can hang a door. The difference with Cornerstone Services is what stands behind the installation: the same company managing the automatic door can also handle the electrical wiring, any wall framing adjustments, and the wider accessibility modifications around it. That’s not common. Most installers are door contractors only. We’re a full home services operation with a dedicated Home Modifications division, and automatic door installation sits inside it alongside wheelchair ramps, grab bars, stairlifts, and smart home setup.
Here’s what customers get, regardless of project size:
- Per-Job Pricing: We price by the job, not by the hour. The number we quote is the number you pay at completion, with no adjustments and no hidden fees.
- Signed Workmanship Warranty: Every job is backed by a signed warranty under our quality assurance policy. You get documented protection on our work.
- Background-Checked Technicians: Every worker we send to your property has passed a background check before arrival.
- On-Time Arrivals: Our service vehicles are staged on-call from multiple locations. Our scheduling system is built to support on-time arrivals.
- Same-Day Service: Available for customers who need help quickly. Call and we’ll work to get someone out the same day.
- Financing Available: Ask about current financing terms when you schedule.
- Monthly Promotions: We run rotating special offers each month, giving you opportunities to save on scheduled services.
Across all trades and all platforms, we’ve earned more than 1,250 five-star reviews on Google, HomeAdvisor, Facebook, and Yelp. That track record reflects every division we run, including automatic door installation.
Do You Need an Automatic Door? NH Code & ADA Context
Many Londonderry property owners aren’t sure whether an automatic door is a preference or a requirement. The answer depends on your building type and what’s triggering the project.
New Hampshire’s building code is based on the 2021 International Building Code with state-specific modifications. Under IBC Section 1105.1.1, certain occupancies are required to have at least one power-operated or low-energy power-operated door at each accessible public entrance, but only when the building’s calculated occupant load exceeds the thresholds set in Table 1105.1.1. Assembly occupancies (Groups A-1 through A-4) trigger the requirement at an occupant load greater than 300. Business, mercantile, and R-1 residential occupancies (such as hotels) trigger it at an occupant load greater than 500. Educational, most institutional, and R-2 residential occupancies aren’t listed in Table 1105.1.1 and aren’t covered by this requirement.
The ADA doesn’t require automatic doors in every situation, but when an automatic door is installed, federal standards govern how it must perform. Opening speed, sensor calibration, and force limits all fall under ANSI/BHMA requirements. Property owners renovating an existing building are generally required to bring affected areas into ADA compliance to the maximum extent feasible, and automatic door installation during a renovation may help address that obligation. None of this is legal advice; if you’re uncertain about your compliance requirements, consult a licensed architect or accessibility consultant. What we can do is install the door to perform correctly once you know what you need.
For residential properties, automatic doors serve a different purpose: supporting independent access for elderly residents or family members with mobility limitations. That’s where the connection to our full Home Modifications division matters most.
Schedule Your Automatic Door Installation in Londonderry
When you’re ready to move forward, Cornerstone Services makes it straightforward. You’ll get a per-job quote before any work begins, a signed warranty when it’s done, and a clean property when we leave. Same-day service is available if your timeline is tight.
Automatic door installation in Londonderry is one call away. We handle the assessment, the installation, and any related electrical or Senior Living Construction work, all under one roof and one price.
Visit our contact page or call us today at (603) 874-1402 to schedule your installation and get a no-surprise quote from Cornerstone Services.
The Cornerstone Difference: Built on Trust. Backed by Service.
The service standards behind the thousands of positive experiences our customers share year after year.
-
Flat-Rate Pricing
The price you're quoted before the job begins is the price you pay at completion, no hourly adjustments, no surprise charges.
-
On-Time Arrival
Service vehicles are staged at multiple locations so we show up when we say we will, not hours after your window closes.
-
Signed Workmanship Warranty
Every job comes with a signed warranty under our quality assurance policy. You get a written record of what the work covers.
-
Background-Checked Workers
Every technician passes a background check before they step onto your property, regardless of the trade or type of job.
-
Same-Day Scheduling
Call us and we'll work to get a technician out the same day. Our on-call staff is available 24 hours a day, every day of the week.
-
Clean Job Sites
Your home or business will be left clean when we're done. Technicians are responsible for cleaning up after every job, no exceptions.
1,250+ Five-Star Reviews & Counting
We let our work speak for itself. From quick repairs to major installs, our customers say it best.
-
Paul Quinn did electrical work for me and he was the best!Nicola Sullivan
-
Michael with Cornerstone Services was excellent to work with.Jamie Fasbender
-
He was very professional and explained all that he was doing.Mary Duford
-
Showed up as agreed and was very informative.John Cote
-
Fast response and very professional.Anne Butterworth
-
On time. Thorough. Kind. Positive attitude in this awful heat.N N
-
Cornerstone came promptly and fixed them.Marilyn Frank
-
He and his partner PJ worked quickly and efficiently to solve a dryer vent issue we had been experiencing.Pierre Thelusma
-
Took care of our electrical needs with ease!Peter Larocque
-
He was quick, thorough, professional, and made sure everything was done right.Jess Nichol
-
10/10 experience and so happy we got in touch with him and this company!Anthony Capozzi
-
They were so neat, you would never know there was a problem.Bill Mullen
-
Paul is always friendly, polite, and professional.Cindy Marcin
-
Paul was efficient and expert at correcting the problem and ensuring all was well.Woodrow Cook
-
He went above and beyond for me when some unforeseen issues arose with my bathtub install.Susan Hevey
-
Tech was on time, friendly, and competent.Vincent JJ Balukonis
-
He was very thorough and quickly corrected the issue.Gary Chisholm
-
Josh was very prompt with his services and explained things clearly.Kim Mcanany
-
Arnold is a pleasure to work with.Esther Bradbury
-
Jason is always great and knowledgeable and friendly.Mark Duell