Design-Build Custom Homes & Remodeling in Lebanon County, PA
Serving our local community since 1994 with over 700 completed projects.
We handle both design and construction in-house for better coordination and fewer surprises.
We operate by a simple principle: treat others as you would have them treat you.
Proud members of NAHB, PBA, and the Lebanon County Builders Association.
Too often, homeowners experience unclear budgets, shifting timelines, and poor communication. We believe building your home should feel organized, transparent, and rewarding.
Define budget and detailed specifications before you commit.
We walk you through site engineering, permitting, and approvals for custom homes.
Defined meetings, scheduled walkthroughs, and a clear project roadmap.
Quality materials and attention to detail that stand the test of time.
Every project is fully customized to fit your land, lifestyle, and long-term goals.
Fully custom homes built on your land. We manage everything from design and engineering to construction and final walkthrough.
Second-story additions, in-law quarters, expanded kitchens, and living spaces designed to integrate seamlessly with your home.
Reimagine your entire home with a comprehensive design-build approach that improves flow, functionality, and long-term value.
Custom kitchen designs built for how you live. From layout redesigns to cabinetry, appliances, and finishes, everything is handled in-house.
From luxury primary suites to functional family bathrooms, we create spaces that balance comfort, design, and durability.
Upgrade curb appeal and functionality with exterior renovations designed to enhance both aesthetics and performance.
Custom pole buildings and garages designed for how you work and play.
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.
Add independent living space to your property with a fully custom in-law suite. Designed for comfort and built seamlessly into your existing home.
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-designed garages built for the way you work, store, and play. From workshop layouts to oversized bays, every detail is tailored to your needs.
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.
Every project is unique, but here are typical investment ranges for our
design-build services.
$260-$290
per square foot.
350k-450k
550k-750k
1,000,000+
$305-$375
per square foot.
50k-90k
100k-200k
500k+
Starting at $50k - $100k
Varies based on layout changes, finish and structure work.
We’ve simplified building and remodeling into three clear stages so you always know what comes next.
Discovery call, buyer’s guide, site engineering review, ballpark pricing, and design agreement.
Detailed prints, updated specifications, pricing review meetings, and finalized plans.
Selections meetings, scheduling, mechanical walkthroughs, and final walkthrough before completion.
Led by Ivan and Josiah Martin, ISM Construction has served Lebanon County homeowners since 1994. As a family-owned and operated business, we believe building homes is about relationships as much as construction.
Ivan began his work in construction in 1983, and after 11 years he founded ISM Construction. His relationship-based approach to building has made ISM what it is today.
Josiah grew up working in construction with his Dad and has been a part of ISM for the past 15 years. He and his wife Megan have been married for 14 years and are raising six children right here in our community. That commitment to family and community shapes how we approach every project.
Your Building Questions, Answered
Most custom homes begin around $380,000, depending on size, finishes, and land
requirements.
Yes. We are a true design-build company with in-house design services.
Absolutely. We guide you through all required approvals and land development steps.
We proudly serve Lebanon County and surrounding counties including Lancaster, Berks,
Dauphin, York, and Schuylkill.
If you’re looking for a builder who values transparency, structure, and long-term quality, let’s begin the conversation.