Garage Additions · Bucks County, PA

Garage Additions in Bucks County

Slate Building LLC designs and builds attached and detached garages across Bucks County — plus bonus rooms, offices, and suites above. As a design-build firm with every trade in-house, we deliver structurally sound, architecturally matched garages.

5.0 rating · 11 reviewsDesign-build · No subcontractorsServing Bucks County, PA

Recent Builds

Real projects, built in-house.

From two-car attached garages to detached carriage-style structures with finished space above, we build garages that add storage, function, and value to your property.

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

Related Services

Addition services we offer.

Room Additions

Single-room bump-outs and full wings that expand your living space and add lasting value.

Second Stories

Full second-story additions that double your footprint without sacrificing your yard.

Master Suites

Spacious primary bedroom suites with spa baths, walk-in closets, and private retreats.

In-Law Suites

Self-contained living quarters with private entrances, kitchenettes, and accessible design.

Sunrooms

Bright, four-season sunrooms and conservatories that bring the outdoors in year-round.

Garage Additions

Attached and detached garages, plus garage-to-living-space conversions and bonus rooms.

Family Rooms

Comfortable great rooms and family rooms with vaulted ceilings and seamless integration.

Structural & Finishes

Foundations, framing, roofing, siding, and interior finishes — all managed in-house.

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 a garage addition cost in Bucks County?

Garage additions typically range from roughly $40,000 to $150,000+ depending on size, attached vs. detached, and whether you add finished bonus space above. We provide a transparent estimate after an on-site visit.

Can you build a room above the garage?

Yes. Bonus rooms, home offices, gyms, and in-law suites above the garage are very popular. We engineer the structure and finishes so the space is comfortable year-round.

Do you build detached garages?

Absolutely. We build both attached and detached garages, matching your home's architecture, siding, and rooflines for a cohesive look.

How long does a garage addition take?

Most garage additions take 2–4 months depending on size and whether finished living space is included. We handle permits, foundation, framing, and finishes in-house.