Custom Home Builder in Lebanon, PA

Your Vision, Your Land, Your Dream Home.

Imagine a home designed not just for you, but by you. A home where every room, every window, and every finish reflects your family’s personality and lifestyle. Whether you own land and want to build on your lot, or you’re still searching for the perfect property, we partner with you to bring your unique vision to life on the land you love.

For over 30 years, our family-owned, design-build team has been the trusted choice for homeowners in Lebanon County. We’ve helped over 700 families create custom homes, from those building on their own lot to those discovering new land together with us. We’ve guided many homeowners through the rewarding journey of creating a custom home, from initial sketches to the final, joyful move-in day. Our process is built on a foundation of collaboration, transparency, and an unwavering commitment to the Golden Rule: treating you and your home with the respect you deserve.

Signature Elements of an ISM Custom Home

A Partnership You Can Trust

Building a custom home is one of life’s most significant adventures. The builder you choose will determine the quality of not just the final product, but the entire experience. Homeowners across Lebanon, Lancaster, Berks, and Dauphin counties choose ISM Construction because we are more than just builders; we are your dedicated partners.

As proud members of the NAHB, PBA, and LCBA, we are committed to the highest standards of craftsmanship and professionalism. But our true measure of success is the trust we’ve earned from over 700 families, many of whom have come to us through referrals from their own friends and neighbors. Our design-build model means you have a single, accountable team managing every detail, from navigating complex land development and permitting to ensuring every nail and board is perfect.

Our Custom Home Gallery

Our Proven Design-Build Process

01

Design & Plan

We listen to your vision, assess your land, and our in-house design team creates a detailed set of plans, 3D renderings, and specifications — refining every detail until it's exactly right.

02

Price & Sign

With a finalized design, we provide a transparent, fixed-price contract. You'll know your total investment before we break ground, with no surprises.

03

Build

Your dedicated Project Supervisor manages every aspect of the construction, keeping you informed through our online client portal and holding every trade to our high standards of quality.

04

Walk Through & Enjoy

Before we hand over the keys, we conduct a meticulous final walkthrough together. Your new home is backed by a comprehensive warranty, and our relationship doesn't end at the door.

What Our Custom Home 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.

Pricing Guide

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

Custom Home FAQs

Your Building Questions, Answered

What if we don't own land yet?

We can help. We have a network of real estate professionals and can assist you in finding the perfect piece of land for your dream home.

How is a custom home priced?

Because every ISM home is unique, we don’t price by the square foot. We develop a detailed, fixed-price budget based on your specific design and selections, so you know the exact cost before we break ground.

How involved can we be during construction?

As much as you want to be. We welcome your involvement and feedback. You have constant access to your property and project as its taking place. Our online client portal keeps you connected to the project 24/7.

Let's Build Your Forever Home.

If you’re ready to stop dreaming and start building, we invite you to begin a conversation with us. A custom home is more than a structure; it’s the foundation for your family’s future. Let’s build it together.