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

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 Bulding 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.