General contractor in Amherst, New Hampshire

Build, remodelor expand your homewith confidence.

100% SatisfactionExpert Contractor That You Can Trust

Serving New England since 2021

Custom homes, additions and renovations.

House wrapped and ready for siding on a Schwanz Construction project

Based in Amherst, NH, we manage new builds, additions and full renovations across New Hampshire, Massachusetts, Maine and Vermont, from the first plan to the final walkthrough.

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Recent projects

From skilled hands to homes that last.

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  1. Wolfeboro, NH, Wolfeboro, NH
    Custom home

    Wolfeboro, NH

    A custom home in Wolfeboro. Framing, metal roofing, composite siding and exterior finishes are in place; the final phase covers the rear and rooftop composite decks.

    • Structural framing
    • Metal roofing
    • Composite siding
    • Composite decks
    StatusIn progress
    LocationWolfeboro, NH
    RegionLakes Region
    View all 7 photos of Wolfeboro, NH
  2. Rattlesnake Island, NH, Alton, NH
    Waterfront renovation

    Rattlesnake Island, NH

    A full-home renovation on Rattlesnake Island: structural framing, new windows and doors, roofing, siding, custom decking, a screened porch and premium interior finishes.

    • Structural framing
    • Windows & doors
    • Roofing & siding
    • Screened porch
    • Interior finishes
    StatusIn progress
    LocationAlton, NH
    RegionLakes Region
    View all 11 photos of Rattlesnake Island, NH
  3. Arrowhead Point, Bristol, NH, Bristol, NH
    Renovation & addition

    Arrowhead Point, Bristol, NH

    A lakefront renovation with a major addition, a new detached garage with finished living space above, extensive interior work, custom decks and entryways, and updated exterior finishes.

    • Home addition
    • Detached garage
    • Interior renovation
    • Custom decks
    StatusCompleted
    LocationBristol, NH
    RegionLakes Region
    See all projects
  4. Rochester, NH, Rochester, NH
    Commercial

    Rochester, NH

    We coordinated every major building system: framing, metal roofing, LP composite siding, stone veneer accents, HVAC, plumbing, insulation, drywall, finish carpentry, painting, commercial entry doors and fencing.

    • Wood framing
    • Metal roofing
    • LP composite siding
    • Stone veneer
    • HVAC & plumbing
    StatusCompleted
    LocationRochester, NH
    RegionCenter Region
    View all 21 photos of Rochester, NH
  5. Nashua, NH, Nashua, NH
    New homes

    Nashua, NH

    Exterior and interior finishing for two newly built single-family homes: asphalt roofing, vinyl siding with PVC architectural details, composite porch decking and complete interior painting.

    • Asphalt roofing
    • Vinyl & PVC siding
    • Composite porch decking
    • Interior painting
    StatusCompleted
    LocationNashua, NH
    RegionCenter Region
    View all 5 photos of Nashua, NH
  6. Nashua, NH, Nashua, NH
    Multifamily

    Nashua, NH

    A large exterior renovation of three multifamily buildings: 52 second- and third-floor decks demolished and rebuilt, 26 concrete slabs replaced and new covered entrances, finished with Trex decking and Trex Transcend railings.

    • Deck reconstruction
    • 26 concrete slabs
    • Covered entrances
    • Trex decking & railings
    StatusCompleted
    LocationNashua, NH
    RegionCenter Region
    View all 21 photos of Nashua, NH

More from the job site

Two photos from each of our 13 documented projects. Tap any photo to browse the full project.

Client reviews

Proven results, in our clients’ words.

  • Google review

    I hired Schwanz to build two sets of stairs for my house. They did a fantastic job and were great with communication. Very professional. I would hire them again!

    Ian Theriault
  • Google review

    I am a general contractor based out of central NH. I was contacted a couple of months ago in regard to potential “partnering” on some upcoming projects I have/had on schedule. After a few weeks of pondering this I decided to give this relationship a GO! From the onset the wonderful management team from Schwanz Construction was communicative, resourceful and professional. I had a project located in Maine I needed to process before the winter. As most of us professional contractors are aware subcontracting work out is the norm. I contacted Pedro and his team and discussed the project in detail, we met and put this project on direct schedule. From the moment his team arrived I breathed a breath of fresh air. Impressive is a clear understatement. I placed my project manager in direct contact with Pedro’s and off to the races they went. Of course with every project arises some obstacles and some unforeseen challenges and the couple that did present themselves were met eagerly with resolve. In business we look for several things in a company. Like my own operation, service, communication, moral and ethic stand out and the crews incorporated within this company SCHWANZ has it all. There is not one fraction of a doubt I will utilise this great resource again and again. Professionalism has a fresh new look and cavalier spirit and approach is predominant with this great company. What a bright future this company has. Respectfully and honourably I submitted! Encore metal roofing and construction

    Paul Morrow
  • Google review

    Schwanz did a great job repairing & painting my home. They are extremely organized and their communication was excellent throughout our project. I recently recommended them to a friend who is now also scheduled Schwanz to paint their home!

    Neil Hause
  • Google review

    Great job, kind service

    Viena Posada
  • Google review

    Schwanz Construction was very responsive and worked very quickly. They provided pictures of their work and were responsive to questions and requests throughout. They were also very affordable. We will use their services in the future, and appreciate the hard work!

    Amoria Brown
  • Google review

    I used Schwanz Construction for a project a few weeks ago. Called to get a quote, they were able to show up two days later. Promised me the quote in three days, but gave it to me the next day. They were able to start the actual work a week later. Work was perfect. Even had a crew come in a few days after to verify my satisfaction. They are reasonably priced, started the work quickly and didn’t disrupt my house. Would use them again and recommend them to everyone.

    Vince Pierri
  • Google review

    This company came to our home, scraped and painted all of our exterior woodwork. They did a fantastic job. We did a walk around and found a few spots that needed to be touched up. Without hesitation they set some guys by to do the touch ups and it looks fabulous. Great company to work with, and we will use them for future projects.

    Dawn Hodges
4.7Average Google rating from 37 reviews, as of October 2026.Read all reviews on Google
New Hampshire Home Builders Association TrexPro Fully insured 4.7 on Google

Who we are

Craftsmanship that builds more than structures.

Founded in 2021 by Pedro Alves, Schwanz Construction was built on a clear commitment to quality, precision and integrity.

Our commitment

We manage each phase of new builds, additions and renovations with disciplined project management, elevated standards and transparent communication.

The goal is a seamless experience and results that reflect durability and thoughtful execution.

Home framed and sheathed, ready for the next phase, on a Schwanz Construction project

What we believe

True craftsmanship builds more than structures. It builds trust, legacy and long-term value.

Google rating from 37 reviews

4.7Average as of October 2026
Pedro Alves, founder of Schwanz Construction, next to a company truck
Pedro AlvesFounder

What we build

End-to-end construction, managed by one team.

Start your project
  • 4.7Google rating
  • 37Google reviews
  • 4States served
  • 2021Founded in Amherst, NH

Why Schwanz

Building with care, delivering with precision.

What homeowners and contractors get when they hire us, from the first plan to the final walkthrough.

Disciplined from the first plan

Every phase is managed with disciplined project management and elevated standards, so the schedule you start with is the schedule we work to.


  • Realistic schedule after the consultation
  • One team from plan to walkthrough
  • Updates at every step
  • Structured, detail-driven approach

How we build

From planning to completion.

Every project follows the same disciplined sequence, so you always know what is happening on site and what comes next.

  1. Our in-house design team works with local architects on the plan. After the first consultation, you get a realistic schedule.

    • Initial consultation
    • Design with local architects
    • Realistic schedule
    • Written contract
  2. Foundation layout and structural framing for walls, floors and roof: the skeleton everything else depends on.

    • Foundation layout
    • Structural framing
    • Floors, walls and roof
  3. Roofing, windows, doors, house wrap and siding close the structure against New England weather.

    • Roofing
    • Windows and doors
    • House wrap and siding
  4. Drywall, flooring, tile, cabinetry, finish carpentry and paint turn the structure into a home.

    • Drywall and insulation
    • Flooring and tile
    • Finish carpentry and paint
  5. We walk the finished project with you and take care of any touch-ups. You get updates at every step along the way.

    • Walkthrough with you
    • Touch-ups
    • Project handover

FAQ

Questions before you build.

Not covered here? Call +1 603-556-2431.

Are you insured?

Yes. Schwanz Construction is fully insured, so your project and your property are protected throughout every phase of the work.

How long will my project take to complete?

Timelines depend on the size and scope of the project. After our initial consultation, we give you a realistic schedule and keep you updated every step of the way.

What are your payment terms?

We typically require a deposit to begin work, with progress payments scheduled throughout the project. All terms are clearly outlined in your contract.

Let’s turn your plans into a home that lasts.

“Work was perfect. Even had a crew come in a few days after to verify my satisfaction.”Vince Pierri, Google review
Get in touch
NHVTMEMAAmherst (HQ)WolfeboroAltonBristolNashua

Service area

Based in Amherst, building across New England.

  • New Hampshire NH
  • Massachusetts MA
  • Maine ME
  • Vermont VT

Get directions See where we work

Schwanz Construction crew member working on an exterior wall

Let’s start your project

Tell us what you want to build.

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