Custom Home Builder & Design-Build Firm in Hershey, PA

For families living in Hershey, the appeal of this unique community goes far beyond the famous Hersheypark attractions and chocolate heritage. It is a place where established neighborhoods, excellent schools in the Derry Township School District, and a strong local economy anchored by Penn State Hershey Medical Center create an ideal environment to put down roots. When homeowners here realize their current house no longer fits their lifestyle, they face a common dilemma: try to find a new property in a competitive real estate market, or transform their existing home into exactly what they need.

ISM Construction partners with Dauphin County homeowners to design and build spaces that truly reflect how they want to live. Since 1994, our family-owned design-build firm has completed over 700 projects, focusing on clarity, craftsmanship, and a seamless process. Whether you are planning to build a custom home on a spacious lot near the medical center or looking to completely reimagine a classic property closer to downtown, our team manages every detail from the initial concept to the final walkthrough.

Our Design-Build Services in Hershey, PA

Every family has different needs, which is why we approach each project in Hershey with a fresh perspective and a commitment to customized solutions.

Custom Homes

Build on your land with a fully customized design created around your family’s lifestyle. We guide you through site engineering, land development, and the entire construction process from start to finish.

Home Additions

Expand your living space with thoughtfully designed additions that blend seamlessly with your existing home. From second-story additions and in-law quarters to garage additions and large-scale expansions, we handle every detail.

Home Remodeling

Reimagine your entire home with a comprehensive design-build approach that improves flow, functionality, and long-term value.

Kitchen Remodeling

Custom kitchen designs built for how you live. From layout redesigns to cabinetry, appliances, and finishes, everything is handled in-house.

Bathroom Remodeling

From luxury primary suites to functional family bathrooms, we create spaces that balance comfort, design, and durability.

Exterior Remodeling

Upgrade curb appeal and functionality with exterior renovations designed to enhance both aesthetics and performance.

Pole Buildings & Garages

Custom pole buildings and garages designed for how you work and play.

Home Renovations

Refresh your home’s look, feel, and function with renovations built around your lifestyle. From cosmetic updates to structural improvements, everything is handled in-house.

Interior Remodeling

Transform your living spaces with custom interior designs that improve flow, comfort, and long-term value. From layout changes to finishes, we manage every detail from start to finish.

In-Law Quarters

Add independent living space to your property with a fully custom in-law suite. Designed for comfort and built seamlessly into your existing home.

General Contractor

One team managing every trade, timeline, and detail from permits to final walkthrough. We keep your project on schedule, on budget, and stress-free.

Custom Garages

Custom-designed garages built for the way you work, store, and play. From workshop layouts to oversized bays, every detail is tailored to your needs.

Second-Story Additions

Expand your home upward without sacrificing your yard with a fully custom second-story addition. We handle the structural engineering, design, and construction entirely in-house.

We have refined our approach over three decades to ensure that building or remodeling in Dauphin County is an organized, predictable experience.

Our Proven Design-Build Process

Consultation & Discovery

Initial meeting to discuss your vision, review site considerations, and establish a realistic budget range.

Define & Refine

Detailed architectural plans are developed, materials are selected, and a fixed-price agreement is finalized.

Sign & Schedule

Contracts are signed, permits are secured, and a clear project timeline is established.

Build With Precision

Construction begins with our dedicated team managing all trades, keeping the site clean and communication clear.

Final Walkthrough

We review every detail with you to ensure the completed project meets our strict quality standards and your expectations.

Why Hershey Homeowners Trust ISM Construction

When you partner with us, you are choosing a design-build firm deeply invested in the Dauphin County community. We are not just building houses; we are building homes for our neighbors.

Fully Custom Design-Build: We handle both architectural design and physical construction entirely in-house, complete with 3D renderings.
Proven Track Record: Over 700 completed projects since 1994, built largely through referrals and repeat customers.
Industry Leadership: Proud members of the National Association of Home Builders (NAHB), Pennsylvania Builders Association (PBA), and the Lebanon County Builders Association (LCBA).
Family-Owned & Operated: Guided by integrity, clear communication, and a commitment to treating your home as if it were our own.

Our Remodeling Gallery

What Our Remodeling Clients Say

    
 
 
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   Khine K. 
 
 
 
 Trustindex verifies that the original source of the review is Google. We cannot recommend ISM enough. Every single person in the company has been amazing to work with. They were very responsive and at times during the planning phase when my husband and I did not see eye to eye, they came up with designs that combined what my husband and I wanted, that we are both happy with. They have been extremely accommodating as well with last-min changes. And they work with (most) contractors that very much care about what they do, that resulted in high quality workmanship. We highly recommend working with ISM for all of your project needs.
  
 
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   Clair Wilson 
 
 
 
 Trustindex verifies that the original source of the review is Google. ISM is great to work with. Very attentive staff and attention to every detail!
  
 
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   Linda Vance 
 
 
 
 Trustindex verifies that the original source of the review is Google. Building our forever home was something I had dreamed about for many years. The moment we met the team at ISM Construction, we felt at ease and reassured that we were in good hands. We knew they would be the right company to build our forever home. Their knowledge, experience, and reassurance helped us decide that ISM was the builder best suited for us ISM operates with integrity, responsibility, and a strong sense of accountability, and that spirit shows in everything they do. Ivan carries himself with a calm confidence that immediately puts you at ease. Josiah led our project and shared their program with us, which included a construction schedule, changes made, our selections, and many other details that made everything easy to follow. His steady leadership, great patience, and willingness to explain things more than once were truly appreciated. Nate was incredibly detail-oriented and organized. Many of the thoughtful ideas in our drawings came from his careful planning. Dawson, our project manager, was hands-on, personable, and always kind. When we visited the site, he answered all our questions with confidence and honesty. Together, they truly make an exceptional team. There were quite a few decisions to make, like layouts, finishes, details I didn’t even know existed.  Permit requirements were also an important part of moving forward which ISM handled effortlessly. They walked us through each step and remained committed to the schedule, even through last year's rainstorms and mud. Watching our land transform into a home was amazing and something I will never forget! As with any large project, small adjustments along the way are simply part of the process. What mattered to us was that the ISM team approached everything with professionalism and a willingness to make things right. That gave us peace of mind. ISM didn’t just build what we imagined, they helped make it even better. Now that we are settled in, friends and neighbors often compliment the beauty and quality of our home. It is everything we hoped for and more. We feel truly blessed to have worked with this team, and we are so grateful for the care they put into building our forever home. I would wholeheartedly recommend ISM to anyone looking to build. They will treat you like family and take pride in doing things the right way.
  
 
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   William Andrews 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had a great experience with ISM! They were quick to respond to our inquiry, provided us detailed plans and specs for our project. They had fair prices, amazing craftsmanship, and stayed on schedule! Every one of their workers were kind, professional, and we felt very comfortable around them. Highly recommended!
  
 
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   Jay Weaver 
 
 
 
 Trustindex verifies that the original source of the review is Google. We appreciated the work from ISM from day1 until move in. The experience showed in many areas. All the sub contractors met and exceeded our expectations. I would highly recommend ISM for your building needs. Jay & Miriam Weaver
  
 
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   Jayson Luckenbaugh 
 
 
 
 Trustindex verifies that the original source of the review is Google. Designing and refining a set of plans and bringing them to life requires the right partner and we were blessed to have found and work with ISM.  A selection process that was detailed, an organized schedule so we knew what was happening and when, communication throughout the project and working through challenges when things didn't go exactly as we planned made for a successful project.  We couldn't have envisioned the final product when staring at an untamed wooded lot on stake out day.  But ISM's experience, their excavator's vision (shoutout to Jere of On-Track!) made for a remarkable home we are lucky to have.  Thank you Ivan, Josiah, Nate, Dawson and the whole ISM team!
  
 
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   Glenn Warwood 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great experience working with ISM on our addition/ renovation project.
  
 
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   Amy Thome 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had a great experience working with everyone at ISM. They were very patient and flexible with us as we went back and forth with our additon to our ranch home. Definitely would recommend them!
  
 
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   Mike Spicer 
 
 
 
 Trustindex verifies that the original source of the review is Google. We did a remodel and an addition to our house and ISM were the best. Total professionals and everything exceeded our expectations. They gave us a schedule for 4 months and everything was done on time or earlier. They are perfectionists and it shows in the quality of their work. We need to remodel our kitchen and bathrooms next and there is only one company we will use and it’s ISM. Thanks so much for everything.

Annville Custom Home & Remodeling Pricing Guide

Transparency is a core value at ISM Construction. We believe you should have a clear understanding of the required investment before you begin the design process. Below is a general guide to our pricing; please note that custom homes typically begin around $380,000, depending on size, finishes, and land requirements.

Category	Size	Estimated Cost	Details
New Homes	Small Medium Large	$350,000 – $450,000 $550,000 – $750,000 $1,000,000+	1,500 sq. ft. 2,500 sq. ft. 3,500 sq. ft.
Additions	Small Medium Large	$65,000 – $85,000 $180,000 – $225,000 $300,000+	Based on 14×16 Sunroom 20×30 Great Room Full in-law quarters with kitchen
Remodels	Small Medium Large	$50,000 $90,000 $300,000+	Bathroom Kitchen Whole House
Garages and Pole Buildings	Small Medium Large	$70K – $80K $180K – $195K $250K – $300K	Pole Building 30X40 Detached Garage Detached Garage W/Finished Second Floor Bonus Room

Frequently Asked Questions About Building in Annville

Your Building Questions, Answered

Do you handle the specific permits required in Derry Township and Dauphin County?

Yes, navigating local municipal requirements is a core part of our service. We handle all necessary site engineering, zoning reviews, and building permits required by Derry Township and Dauphin County, ensuring your project is fully compliant before any construction begins.

Why should I choose a design-build firm over hiring an architect first?

When you hire an architect independently, they design without knowing exactly what the construction will cost, often leading to plans that exceed your budget. Our design-build approach integrates the design and construction teams from day one, meaning we design specifically to your target investment level, preventing costly redesigns and delays.

How long does a major remodeling project typically take in the Hershey area?

Timelines vary significantly based on the scope of work, but a major addition or whole-home remodel generally takes between three to six months of active construction. We provide a detailed schedule during the planning phase and manage all materials and trades to keep the project moving efficiently without sacrificing quality.

Can you build a custom home on a lot I already own near the medical center?

Absolutely. We specialize in building on your land and will evaluate your specific parcel to determine the best placement for the home. We handle the site preparation, utility connections, and grading required to ensure your new custom home fits perfectly on your property.

Ready to Transform Your Home?

If you are ready to explore the possibilities for your property, ISM Construction is here to help you navigate the process with confidence. We offer a Free Estimate to discuss your ideas and provide clear, actionable advice on how to move forward. We also understand that major renovations are a significant investment, which is why we provide Flexible Financing Options to help make your dream home a reality. Contact us today at 717-949-3986 or email info@ismconstruction.net to schedule your initial consultation.