For builders, developers, lenders, agents and attorneys: collect the Collin County drainage, floodplain, map, permit, survey, plat or commitment source and one process question without asking the public form to decide floodplain status, buildability, coverage, title or legal effect.
A builder, developer, lender, commercial agent or attorney may see a drainage plan, floodplain map, permit record, plat note, survey callout or commitment item before the file is ready for a decision. This handoff keeps the first packet source-forward: public source, jurisdictional lane, timing pressure and one next title or escrow process question.
Send the source that raised the drainage or floodplain question and label what kind of file condition it created. WG Title can route the title and escrow process question; engineering, floodplain administration, coverage, underwriting and legal conclusions stay with the right reviewer.
These public sources were checked on August 31, 2026. They help a transaction professional organize a better first packet, but they do not decide floodplain status, drainage sufficiency, drainage easement scope, buildability, permit sufficiency, insurance requirements, title status, underwriting, legal effect or closing timing.
Collin County's land-division page lists a drainage plan, flood-study approval letter when needed, OSSF review when needed, tax certificate, utility will-service letters, deed and TxDOT driveway permit lane as separate source items.
Read the source ->The county page says a flood study may be required when any portion of a FEMA-designated flood plain is on the property and the development reaches at least 5 acres or 50 lots.
Read the source ->The FAQ points readers to Collin County Interactive Maps for ETJ, city-limits, floodplain and commissioner clues, and to the permitting portal or open-records request path for available permit documents.
Read the source ->The engineering FAQ sends city-limit drainage complaints to the city, unincorporated county-maintained road ditch or culvert complaints to Public Works, and other unincorporated drainage complaints to Engineering.
Read the source ->The county drainage standards say development within the 100-yr floodplain must follow Collin County Floodplain Management Regulations and that lot-to-lot drainage is not allowed without a drainage easement.
Read the source ->FEMA's Map Service Center is the federal source lane for official flood maps and related flood-hazard products. Send the map panel or source link instead of paraphrasing a flood-zone conclusion.
Read the source ->TWDB describes the 2024 State Flood Plan as a statewide planning process that identifies exposure, infrastructure, practices and recommended risk-reduction solutions across Texas.
Read the source ->TDI's P-53 framework prohibits rebates, discounts and other things of value tied to solicitation or referral of title-insurance business. This page is available on the same terms to everyone.
Read the source ->The best drainage and floodplain handoff is not an engineering opinion, insurance decision, title opinion or legal conclusion. It tells the team what source exists, what file condition raised the issue and who needs the next answer.
This public resource is available to anyone on the same terms. It is not conditioned on sending a closing to WG Title and it does not offer a rebate, discount, commission, gift or thing of value for a referral.
Prepared as a courtesy. This document is available to any real estate professional on the same terms and is not conditioned on directing a closing to WG Title.
WG Title provides title and escrow services, not legal advice. WG Law is a separate, independently operated company and any relationship with it is governed by its own engagement.
Read TDI Procedural Rule P-53 ->This uses the existing closing-readiness form. The page URL, referrer, UTM fields and click IDs stay with the lead record, so the title team can see that the question came from this Collin County drainage and floodplain source handoff.
Do not paste wire instructions, account numbers, taxpayer credentials, Social Security numbers, identity-document numbers, confidential contracts, complete commitments, full plats, surveys, flood studies or client documents into this form.
Jamie Ellis authored this as ordinary business and educational content. Transaction-specific floodplain status, drainage sufficiency, drainage easement scope, buildability, permit sufficiency, insurance, title, underwriting and legal conclusions belong with the appropriate professional reviewer or decision-maker.
