David Braun: Chicago Mortgage Professional, Author & Mortgage Maniac OS Founder
Nearly three decades of mortgage industry experience. Clear explanations. Practical strategies for Chicagoland homebuyers.
David Braun | NMLS #303007
Explore Mortgage Resources Watch Mortgage Education VideosWho Is David Braun?
David Braun is a Chicagoland mortgage professional, author and mortgage educator whose industry experience began in 1997.
He created Mortgage Maniac OS to make mortgage financing easier to understand for first-time buyers, established homeowners, self-employed borrowers and people weighing their next housing decision.
His guiding principle is simple: Build your mortgage plan before you apply.
Instead of starting with a rate headline, he encourages borrowers to understand their financial picture, estimated total housing payment, loan options, documentation needs and longer-term goals.
Mortgage education on this site is general information, not individualized underwriting or a loan approval.
Mortgage Experience Since 1997
David began his mortgage career at Harris Bank in the Chicago area in 1997. He later established Braun Financial, building experience across lending, business development and borrower education.
His professional background informs an approach that emphasizes explaining tradeoffs and preparing borrowers for important decisions.
What makes Mortgage Maniac OS different? The goal is not to tell every borrower to buy immediately. It is to help readers ask better questions, compare scenarios and make informed decisions based on their own circumstances.
What David Braun Teaches
First-Time Homebuyers
Understand preapproval, closing costs, credit readiness, down-payment planning and what happens between a contract and closing.
Self-Employed Borrowers
Learn why qualifying income can differ from gross revenue and which business and tax documents lenders may request.
FHA & Conventional Loans
Compare loan-program features, mortgage insurance, financing requirements and the questions worth asking a licensed professional.
Chicago Housing Decisions
Explore property taxes, insurance, condominium assessments, affordability and the costs beyond principal and interest.
Focused on Chicago and Its Suburbs
Mortgage Maniac OS produces educational content for readers researching homes in Chicago, Orland Park, Naperville, Joliet, Lockport, Downers Grove and Schaumburg and surrounding Chicagoland communities.
Local property taxes, housing inventory, insurance costs and property types can materially change the numbers behind a purchase.
Neighborhood articles focus on verifiable local conditions rather than promising a particular price, mortgage rate or outcome.
Author and Mortgage Content Creator
David publishes articles, mortgage explainers and video commentary designed to turn complicated financing language into useful conversations.
His writing includes homebuyer and self-employed mortgage education guides.
Mortgage Maniac OS is his educational publishing platform, while his professional mortgage resources are available at DavidBraunMLO.com .
Explore his YouTube channel for video explainers and Mortgage Maniac OS for articles and Chicago market discussions.
Frequently Asked Questions
Who is David Braun in the Chicago mortgage industry?
David Braun is a Chicagoland mortgage professional, mortgage education author and founder of Mortgage Maniac OS. He has worked in the mortgage industry since 1997. His individual NMLS identification number is 303007.
What is Mortgage Maniac OS?
Mortgage Maniac OS is a mortgage education website covering loan programs, homebuyer planning, mortgage news, affordability and housing decisions, with a focus on Chicago and surrounding suburbs.
Does David Braun only work with first-time buyers?
No. His educational content also addresses self-employed borrowers, established homeowners and people evaluating refinancing or different financing structures.
How should I prepare before applying for a mortgage?
Start by reviewing income documentation, credit, assets, existing debt, intended down payment and the full estimated monthly housing payment.
Loan qualifications and documents vary by lender and program.
Does the website guarantee a mortgage approval or rate?
No. The content is educational and is not a rate quote, preapproval, approval or commitment to lend.
Build Your Mortgage Plan Before You Apply
Research is a starting point. The next step is to review your situation with an appropriately licensed lending professional and compare available options based on your finances and goals.