From enterprise IT project rooms to Charlotte-area job sites
A Modern Jack exists because residential construction deserves the same rigor as the highest-stakes corporate projects — and because families deserve a better option than choosing between a costly move and an even costlier care facility.
The 30-second story
Between high mortgage rates, soaring rents, and assisted living costs topping $5,000 a month, single-family homes aren't working for modern families. Founder Keith Thorneburg spent 30 years managing high-stakes enterprise projects before launching A Modern Jack LLC to bring corporate discipline to residential construction.
Today, A Modern Jack specializes in turnkey ADUs, garage studio conversions, and in-law suites that let families live together affordably — without sacrificing privacy, independence, or equity.
Keith Thorneburg
Founder, A Modern Jack LLC
Background: 30 years in corporate enterprise IT project management
Licensing: NC General Contractor License #108854
Focus: Multigenerational housing, ADUs, and affordable living transitions across the Charlotte, NC metro
Vision, purpose, and mission
Vision
To solve the housing affordability crisis by transforming existing homes into functional, multigenerational sanctuaries that keep families together.
Purpose
To ensure housing remains accessible and affordable by optimizing existing structures for shared living — empowering families to build generational wealth, care for loved ones with dignity, and thrive independently on a shared footprint.
Mission
To provide expert modification services that allow families to live together with dignity and privacy. We empower families to thrive in shared households by delivering functional, affordable, and compassionate architectural solutions.
What we believe
Generational impact & affordability
We prioritize solutions that protect family wealth, eliminate unnecessary rent or assisted-living costs, and generate lasting real estate equity.
Autonomy & dignity
Shared living only succeeds when privacy is preserved. We design for absolute autonomy — acoustic decoupling, private entrances, independent mechanicals, and zero-threshold Universal Design.
Enterprise-grade execution
We replace standard industry ambiguity with corporate-level project rigor: clear communication protocols, real-time digital dashboards, fixed schedules, and absolute financial transparency.
Building science & future-proofing
Every modification is built for longevity and energy resilience — high-efficiency heat pump systems, optimal insulation envelopes, and infrastructure ready for solar and battery integration.
Community density & integrity
We support gentle, sustainable neighborhood density that keeps families rooted in their communities without disrupting the local architectural fabric.