Fix & Flip Calculator for
Houston Operators.

Houston is the most heterogeneous flip market in the US. Within a 30-minute drive you can find $90k tired single-family in Sunnyside and $1.2M Heights craftsman. That diversity means the "Houston flip" doesn't exist as a single underwriting category — you're running fundamentally different deals depending on sub-market. Five operational differences from less-complex markets.

Flood zone is the most important underwriting variable. FEMA flood map designation drives buyer demand, appraisal value, and insurance cost. Houston has more property in FEMA-designated flood zones than any other major US metro. A property in Zone AE (100-year floodplain) sells at a 5–15% discount to identical product outside the floodplain, takes 30–60 days longer on market, and locks the buyer into mandatory flood insurance that limits their offer math. Hurricane Harvey (2017) permanently reset Houston buyer perception of flood risk. Always pull the FEMA flood map (MSC.FEMA.gov, free) for the exact address before the offer. If the property is in a flood zone, underwrite ARV at the lower comp percentile and add flood insurance to your holding cost.

Hurricane insurance is a different cost category.Texas Gulf Coast properties carry separate hurricane / wind / hail riders, a 2%-of-dwelling-value hurricane deductible (not a flat $1k–$2.5k), and 2x–3x the base premium of inland Texas. A $250k Houston flip insurance policy quotes $2,500–$4,000/year vacant — $1,000+ more than the same flip in DFW and $2,000+ more than Oklahoma. Plug actual Houston insurance quotes into the calculator above as dollar figures — don't use a percentage estimate.

Houston-specific rehab line items. Heat and humidity wear HVAC harder — full system replacement runs $10k–$14k vs. $9k–$12k in DFW. Moisture management is a real budget category: vapor barriers, attic ventilation, exhaust fan upgrades, drainage improvements. Impact-rated roofing adds 15–25% to roof replacement but lowers insurance premium and is required by some HOAs. Mold remediation on flood-affected properties is its own line item — $3k–$15k depending on extent.

Sub-market variance affects every assumption. A Heights flip and a Sunnyside flip share almost nothing operationally. Heights is $500k+ ARV, 1920s–1940s craftsman, 35–55 day DOM to retail buyers who tour 5–10 homes before offering, and rehab pricing 30%+ above metro average. Sunnyside is $130k–$180k ARV, 1950s–1970s product, 40–60 day DOM to investor or first-time buyer, rehab at metro-average pricing. Same metro, opposite businesses. Pick your sub-market deliberately and price every input against that specific zip.

Hurricane season adds operational risk. June–November is hurricane season. A major storm can shut down inspections, appraisals, and closings for 1–4 weeks. Insurance markets stiffen post-storm. Hard money lenders pause or reprice. Flips that close August–October should carry 2–4 weeks of buffer in holding cost and a 2% TRR floor minimum to absorb storm-related delays.

Houston flip checklist. FEMA flood map check on the address — non-negotiable. Three solds within 0.5 miles and 60 days at similar finish AND similar flood zone. HCAD assessed value × 2.2% for property tax (verify MUD). Live Houston insurance quote with hurricane rider. Rehab priced at three live Houston subcontractor quotes including HVAC at Houston pricing. Foundation inspection on inner-loop deals. TRR buffer at 2% (3% during hurricane season). ARV stress-tested at 5% drift. Hit those and Houston flips produce $35k–$70k net per deal on a steady cadence.