In-Law Quarters in Lebanon, PA

Keep Your Loved Ones Close. In Comfort & Style.

Life’s greatest joy is family. As your family evolves, the desire to have multiple generations living close by. Yet not under the same roof, becomes a priority. An in-law quarter is the perfect solution, offering a delicate balance of closeness and independence for the people you care about most.

At ISM Construction, we specialize in creating thoughtful, private, and beautifully crafted in-law suites. For over 30 years, our family-owned design-build firm has helped Lebanon County homeowners create welcoming and functional spaces for aging parents, returning college students, or long-term guests. We design each unit to be a true home, providing comfort, safety, and a genuine sense of personal space.

Designing for Independence & Peace of Mind

Why ISM is the Right Partner for Your Family Suite

Building a space for a loved one is a deeply personal project. It requires a builder with not only technical skill but also empathy and a collaborative spirit. Homeowners across Central PA trust ISM Construction because our design-build process is founded on communication and a shared commitment to your family’s well-being.

As a single, accountable team, we manage every detail, from navigating complex local zoning and permitting for in-law quarters to ensuring every finish is perfect. Our legacy of over 700 successful projects and our memberships in the NAHB, PBA, and LCBA reflect our dedication to quality. We build every in-law suite with the same care and craftsmanship as if it were for our own family.

Our In-Law Suite Gallery

Our Process for Creating Your Family Suite

01

Design & Plan

Our first meeting is a conversation about your family's specific needs, lifestyle, and level of independence required. Our designers then create a custom floor plan that maximizes comfort, privacy, and accessibility.

02

Price & Sign

You'll receive a detailed, transparent, fixed-price contract that outlines the full scope of work, giving you complete financial clarity and peace of mind.

03

Build

Our team builds with the utmost respect for your property and your privacy, working efficiently to deliver a high-quality space with minimal disruption.

04

Walk Through & Enjoy

We conduct a meticulous final walkthrough to ensure the new suite is perfect and ready for your loved ones to move in, backed by our comprehensive warranty.

What Our 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

In-Law Suite FAQs

Your Building Questions, Answered

What is the difference between an in-law suite and in-law quarters?

An in-law suite is typically attached to the main home, while In-Law Quarters can be attached or a separate, smaller dwelling on the same property. We can help you determine what is allowable under your local zoning laws.

Can you make the suite fully accessible for a wheelchair user?

Yes. We are experts in universal and accessible design and can create a fully ADA-compliant living space if required.

Does In-Law Quarters add value to my property?

Absolutely. A well-designed, legally permitted In-Law Quarters can significantly increase your property’s value and appeal to a wider range of future buyers.

Bring Your Family Together.

Creating a dedicated space for your loved ones is an investment in your family’s future and your peace of mind. Let’s work together to build a beautiful, comfortable, and independent home for the people you cherish most.