Room Additions · Second Stories · In-Law Suites · Garage Additions · Licensed GC
Licensed · Bonded · Free 48-Hr Estimate
JK Prestige Constructor Corp is Jacksonville's trusted addition contractor — room additions, second-story additions, in-law suites, garage additions, and home office additions throughout Jacksonville and Northeast Florida. Permitted, fixed-price, owner-direct.
"An addition is a permanent improvement to your most valuable asset. We engineer it to integrate seamlessly — so it looks like it was always there, not like something added on." — J. Karras, Founder & CEO
Bedroom, office, family room, and great room additions — slab or crawl foundation, matching roofline, full MEP, and exterior match.
Attached in-law suite additions with separate entrance, bedroom, bathroom, and kitchenette — fully permitted.
Full second-story additions — structural engineering, temporary roof removal, and complete MEP extension through two floors.
Attached and detached garage additions — 1-car, 2-car, with workshop, storage, and ADU options.
Fully licensed in Florida. Every project is bonded and insured from groundbreaking through final walkthrough.
You work directly with the principal — not a call center. Real answers from the person accountable for your project.
Detailed written estimate within 48 hours. No vague ballparks — just a clear scope and number.
Every JK Prestige crew operates under OSHA 30 standards. A safer site means fewer delays.
Room additions in Jacksonville are a compelling alternative to upsizing your mortgage — you get more space in a neighborhood you love without the transaction costs of buying and selling.
JK Prestige manages the structural engineering, Duval County permits, framing, roofline integration, MEP rough-in, and interior finishes under one contract. We self-perform framing and drywall — the trades that determine whether an addition integrates seamlessly or looks tacked on.
According to Remodeling Magazine, room additions in the South Atlantic region recover 50–65% of cost at resale. In-law suites and accessory dwelling units are recovering higher percentages as Florida's population ages and demand for multigenerational housing increases.