Finished Basements · Yardley, PA

Finished Basements in Yardley, PA

Slate Building LLC is a Yardley basement finishing contractor that transforms unused lower levels into warm, dry living space — family rooms, home theaters, gyms, wet bars, and guest suites. Every Yardley basement is waterproofed, code-compliant, and managed in-house with 5-star craftsmanship.

5.0 rating · 21 reviewsDesign-build · No subcontractorsServing Bucks County, PA

Recent Builds

Real projects, built in-house.

From canal-side homes in Yardley Borough to Lower Makefield developments, we design and build interior spaces that fit your home's character and how you live. Every project is managed in-house — one point of contact, no subcontractors.

Vaulted living room addition
Vaulted living room addition
Custom structural addition
Custom structural addition
Indoor-outdoor living space
Indoor-outdoor living space
Whole-home expansion
Whole-home expansion

What We Build

Finished basement services we offer.

Finished Living Space

Warm, dry, fully finished basements built for everyday living, lounging, and entertaining.

Home Theaters

Media and theater rooms with tiered seating, wiring, and acoustic finishes.

Home Gyms

Durable, well-ventilated workout spaces with proper flooring and lighting.

Wet Bars & Kitchenettes

Built-in bars, kitchenettes, and entertaining zones with custom cabinetry and stone.

Basement Bathrooms

Full and half baths with proper plumbing, waterproofing, and designer tile.

Egress & Safety

Code-compliant egress windows, insulation, and moisture control for safe, comfortable space.

In-Law & Guest Suites

Self-contained lower-level suites with bedrooms, baths, and private living areas.

Waterproofing & Finishes

Moisture management, insulation, flooring, and finishes built to last underground.

Why Homeowners Choose Slate

Craftsmanship in every detail.

Licensed & insured

Fully licensed and insured in Pennsylvania for your complete peace of mind.

Custom designs

Every project is designed from scratch around your home, lifestyle, and budget.

Premium materials

Custom cabinetry, stone, hardwood, and high-end finishes built to last decades.

Clear communication

One point of contact, transparent pricing, and daily updates throughout.

Local Bucks County contractor

We know local codes, permitting, and what holds up to Pennsylvania weather.

Have Questions?

Answers for local homeowners.

How much does it cost to finish a basement in Yardley, PA?

Finishing a basement in Yardley typically ranges from roughly $35,000 to $120,000+ depending on size, bathrooms, wet bars, and finish level. We provide a transparent, itemized estimate after an on-site visit.

How long does it take to finish a basement in Yardley?

Most finished-basement projects take 6–12 weeks depending on scope, plumbing, and egress work. We provide a clear timeline up front and manage every trade in-house.

Do you handle waterproofing and egress code in Yardley?

Yes. We address moisture control, insulation, and code-compliant egress, then file permits and coordinate inspections with local Yardley-area authorities so your basement is safe and legal.

Can you add a bathroom or wet bar to the basement?

Absolutely. We routinely add full baths, half baths, wet bars, and kitchenettes — running the plumbing, electrical, and waterproofing needed for a seamless, high-end finish.

Explore More

Services & service areas.

Slate Building LLC designs and builds across Bucks County. Browse our services and the towns we serve.