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Call us now and we'll work to schedule a technician the same day, across every trade we handle.

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Home Services in Derry, NH

Full-Service HVAC, Electrical, Plumbing, Handyman, Cleaning, & Home Modification Services for Homes & Businesses

At Cornerstone Services, our promise is simple: one call covers everything. We provide comprehensive services for residential and commercial customers throughout Derry, NH, as part of our broader southern New Hampshire service area. Our licensed and insured technicians bring over 20 years of experience to every job we take on.

Need home services in Derry? Our team is available for same-day scheduling. Call us now at (603) 874-1402 and we can get someone out to you.

One Company Handles It All

Home maintenance in Derry doesn't have to mean coordinating with a different contractor for every job. Cornerstone Services brings electrical, plumbing, handyman, and deep cleaning services together under one reliable team, giving homeowners a simpler, smarter way to care for their homes. From rewiring outlets and upgrading fixtures to resolving stubborn leaks and handling the repairs that have been on the back burner for months,  our team arrives prepared to do it all with the skill and professionalism local homeowners deserve.

Trusting one team with your home's varied needs offers advantages that go well beyond convenience. When the same company handles your electrical, plumbing, and handyman work, they develop a genuine understanding of how your home is put together — and what it needs to stay in top shape. That familiarity means potential issues are caught earlier, work is completed more efficiently, and nothing falls through the cracks simply because it was "someone else's job." Cornerstone Services takes ownership of the full picture, giving property owners the peace of mind that comes with having a dependable team in their corner.

Keeping Your Property Well-Maintained

A well-maintained home is also a clean one, and our professional deep cleaning services round out the complete care your home deserves. Whether it's restoring order after a plumbing repair, preparing a space for an upcoming renovation, or simply achieving the kind of thorough clean that regular upkeep can't quite reach, their team handles it with the same attention to detail they bring to every service. Cornerstone Services isn't just a contractor; we're a long-term partner committed to keeping your home safe, functional, and truly cared for.

We also offer a dedicated home modifications service line, including wheelchair ramp installation, grab bar installation, stairlift installation, kitchen modifications for elderly residents, and smart home setup for elderly and disabled clients. It's a range of services that complements our trade work and follows the same single-provider model we apply to everything we do.

HVAC Services We Provide in Derry, NH

Our technicians are licensed and insured, handling the full range of heating and cooling work for both homes and businesses. Southern New Hampshire winters place real demands on furnaces and boilers, and humid summers push cooling systems hard. We're equipped for all of it.

Our Derry HVAC services include:

Ductless mini splits are a practical solution for homes without existing ductwork or for property owners who want room-by-room temperature control. Indoor air quality services address allergens, humidity, and airborne contaminants in both residential and commercial spaces. Whatever the heating or cooling need, our team handles it.

What Sets Our Services Apart

More than 1,250 five-star reviews across Google, HomeAdvisor, Facebook, and Yelp reflect a consistent standard across thousands of jobs. Here's what you get when we show up:

  • Per-job pricing: We quote by the job, not the hour. The number you receive before work begins is the number you pay at completion; no adjustments, no hidden fees.
  • Signed workmanship warranty: Every completed job is backed by a signed warranty under our quality assurance policy.
  • On-time arrival: Our service vehicles are staged from multiple locations so we show up when we say we will.
  • Same-day service: Call us and we'll work to get a technician out the same day.
  • Background-checked workers: Every technician entering your property has cleared a background check.
  • Tidy job sites: We clean up completely when the work is done.
  • Financing available: Ask about current financing options when you schedule.
  • Monthly promotions: Rotating offers give you opportunities to save on scheduled services.

Schedule Your Services Today

Whether you need a furnace repaired before the first cold snap, an AC system serviced before summer, a safety issue caused by a faulty electrical component, or you need a trusted expert for almost any other facet of your property's care, we're ready to help. Same-day scheduling is available. One call handles your HVAC service and every other home or business need on your list.

Call (603) 874-1402 to schedule with Cornerstone Services. We're ready to help today.

The Price We Quote is the price you pay at completion, every time.

No hourly overruns, no hidden fees. Every job is backed by a signed workmanship warranty.

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1,250+ Five-Star Reviews & Counting

We let our work speak for itself. From quick repairs to major installs, our customers say it best.
5
Based on 1,250+ reviews
    "Paul was by far the best one"
    Paul Quinn did electrical work for me and he was the best!
    Nicola Sullivan
    "Excellent to work with"
    Michael with Cornerstone Services was excellent to work with.
    Jamie Fasbender
    "He was very professional"
    He was very professional and explained all that he was doing.
    Mary Duford
    "A job well done!"
    Showed up as agreed and was very informative.
    John Cote
    "Fast response and very professional"
    Fast response and very professional.
    Anne Butterworth
    "Entire AC Unit Redone"
    On time. Thorough. Kind. Positive attitude in this awful heat.
    N N
    "I couldn’t be happier"
    Cornerstone came promptly and fixed them.
    Marilyn Frank
    "Overall, a Great Experience"
    He and his partner PJ worked quickly and efficiently to solve a dryer vent issue we had been experiencing.
    Pierre Thelusma
    "Excellent Service, Very Cordial"
    Took care of our electrical needs with ease!
    Peter Larocque
    "Paul from Cornerstone was fantastic!"
    He was quick, thorough, professional, and made sure everything was done right.
    Jess Nichol
    "Nothing but a wonderful experience"
    10/10 experience and so happy we got in touch with him and this company!
    Anthony Capozzi
    "Did an Excellent Job Finding a Leak"
    They were so neat, you would never know there was a problem.
    Bill Mullen
    "Paul is always friendly, polite, and professional"
    Paul is always friendly, polite, and professional.
    Cindy Marcin
    "All Went Smoothly and Efficiently"
    Paul was efficient and expert at correcting the problem and ensuring all was well.
    Woodrow Cook
    "Robert Did Fantastic Work"
    He went above and beyond for me when some unforeseen issues arose with my bathtub install.
    Susan Hevey
    "New customer"
    Tech was on time, friendly, and competent.
    Vincent JJ Balukonis
    "Jason did a fantastic job"
    He was very thorough and quickly corrected the issue.
    Gary Chisholm
    "Very Prompt and Clear Service"
    Josh was very prompt with his services and explained things clearly.
    Kim Mcanany
    "Great job, appreciate the care"
    Arnold is a pleasure to work with.
    Esther Bradbury
    "Jason is always great and knowledgeable"
    Jason is always great and knowledgeable and friendly.
    Mark Duell
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Questions We Hear Before Every Job

Do you charge by the hour?
No. Every job is priced by the job, not the hour. We give you a flat rate before the work begins, and that number doesn't change at completion, regardless of how long it takes.
What trades do you handle?
We cover HVAC, plumbing, electrical, cleaning, handyman work, and home modifications, including wheelchair ramp installation, grab bar installation, and stairlift installation. Every trade is handled by the same company under one warranty.
Is same-day service available?
Yes. Call us and we'll work to get a technician out the same day. Our staff is on-call 24 hours a day, every day of the week.
Are your workers background-checked?
Yes. Every worker we send to your property has passed a background check before setting foot in your home or business.
Do jobs come with a warranty?
Yes. Every completed job is backed by a signed warranty under our quality assurance policy. You get documented protection on the work, regardless of which trade performed it.
Do you serve commercial customers?
We do. We handle both residential and commercial work across every trade, with the same per-job pricing and signed warranty for business customers.

YOUR HOME
DESERVES THE BEST

Let's Make It Happen!
  • On-Call 24/7
  • One Company. Every Trade.
  • 1000s of Happy Customers
  • Your Neighbors Since 2003
Prefer to Call? Our staff is available around the clock.

Reach us any time to book a service, ask a question, or get on the same-day schedule.

Call (603) 874-1402
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