Our Services · Greater Pittsburgh

HOME ADDITIONS

Seamless additions that expand your home and match its character down to the detail.

What to Expect

Home Additions by
Josiah Construction

A home addition is the most personal project we build — it has to match your existing home perfectly, from the roofline to the trim profile to the floor. We've done it enough times to know where the details matter most.

01

Room additions, sunrooms & four-season rooms

02

Second-story additions & dormers

03

Garage conversions & garage additions

04

Foundation & structural framing work

05

Exterior matching — siding, roofing, trim

06

Full interior finish — flooring, drywall, paint, millwork

Built to a Higher Standard Every project is entered into as a partnership — Master-carpenter-led, on schedule, with no corners cut. We'll walk it together at the end and make sure it lives up to the standard.
Project Gallery

Recent Addition Projects

Aerial view of wood-frame room addition under construction
Room Addition Framing, 2025
Lakefront room addition with mixed hardwood floor
Lakefront Room Addition
Commercial building addition with Hardie panel siding
Hardie Panel Addition, 2025
Let's Build

Ready to Start Your
Home Addition?

Tell us what you're dreaming of. We'll do the research, give you a straight estimate, and build it right.