Residential Construction
Craftsmanship
Web Design
Architecture
Custom Computers
Performance
Data Analytics
Insight
3D / Virtual Reality
Immersion
Consulting
Strategy
Welcome to
House of Kartheiser
Play Video Presentation
Based in Ottawa, Illinois, House of Kartheiser showcases the work of Mark Kartheiser — a multi-discipline designer, builder, fabricator, and data analytics consultant. This site is organized by service so you can quickly explore real project examples in construction and renovation, WordPress/Elementor sites, custom computer builds, dashboarding and spreadsheet forensics, 3D/VR modeling, and practical consulting. If you’re looking for someone who can plan, build, and deliver, use the Contact page to start the conversation.
245
Finished Projects
16
Years Building & Delivering
5
Espresso Shots A Day
Services I Offer
WEB DESIGN
CUSTOM COMPUTERS
DATA ANALYTICS
3D / VIRTUAL REALITY
CONSULTING
Trusted By
Skills I Offer
for Charity
Construction
Repairs, safety upgrades, and small build-outs that keep community spaces functional.
Web Design
Landing pages, donation funnels, event pages, and cleanup that improves clarity and trust.
Custom Computers
Reliable workstation builds, performance tuning, and troubleshooting for staff and volunteers.
Data Analytics
Spreadsheets, dashboards, and KPI tracking to demonstrate impact to donors and grant reviewers.
3D / Virtual Reality
Visualizations and space mockups to plan improvements before spending time and materials.
Consulting
Scope, priorities, and execution planning so projects stay realistic, measurable, and on-track.
COMMUNITY SUPPORT
Need skilled help for a nonprofit project?
If you’re coordinating a community upgrade, event setup, fundraising push, or facility improvement,
I can donate select time and deliverables to help you move faster—with real execution, not just ideas.