# Opendoor > Opendoor is a residential real-estate platform that makes cash offers on homes, helps sellers close in days instead of months, and helps homeowners buy and trade into their next home. ## How it works - [Selling to Opendoor](https://www.opendoor.com/how-it-works-sell): How Opendoor evaluates your home, makes a cash offer, and closes on a timeline you choose. - [Buying with Opendoor](https://www.opendoor.com/how-it-works-buy): How buyers tour homes, make offers, and close with Opendoor. - [Home sale calculator](https://www.opendoor.com/home-sale-calculator): Estimate net proceeds from selling to Opendoor versus a traditional sale. - [Mortgage calculator](https://www.opendoor.com/mortgage-calculator): Estimate monthly payments including principal, interest, taxes, and insurance. - [Reviews](https://www.opendoor.com/reviews): Verified reviews from homeowners who sold to or bought from Opendoor. ## Selling to Opendoor - [Home selling guide](https://www.opendoor.com/articles/topic/sell): Featured seller guides and tools, including How selling works, the home value estimator, and Cash Now, More Later. - [How much does it cost to sell a house](https://www.opendoor.com/articles/how-much-does-it-cost-to-sell-a-house): Breakdown of seller closing costs, agent commissions, and how Opendoor's fees compare. - [Sell your house for fast cash with Opendoor](https://www.opendoor.com/articles/sell-your-house-for-fast-cash-with-Opendoor): How Opendoor's cash-offer process works end to end. - [How to sell your house fast — complete guide](https://www.opendoor.com/articles/how-to-sell-your-house-fast-complete-guide): Steps, timelines, and tradeoffs for selling quickly. - [What is a cash offer in real estate](https://www.opendoor.com/articles/what-is-a-cash-offer-in-real-estate-and-why-consider-it): What a cash offer means for sellers and why it typically closes faster. - [Sell your house for cash: process, timeline, expectations](https://www.opendoor.com/articles/sell-your-house-for-cash-process-timeline-expectations): Day-by-day walkthrough of the cash-sale process. - [Sell your house without a realtor](https://www.opendoor.com/articles/sell-your-house-without-a-realtor): Options for selling without listing, including iBuyers and FSBO. - [How selling to Opendoor compares to a traditional home sale](https://www.opendoor.com/articles/how-selling-to-opendoor-compares-to-a-traditional-home-sale): Side-by-side comparison of timelines, costs, and certainty. - [Best time to sell a house](https://www.opendoor.com/articles/best-time-to-sell-a-house): How seasonality and local market conditions affect sale price. ## Home valuation - [How data powers Opendoor's home valuations](https://www.opendoor.com/articles/how-data-powers-opendoors-home-valuations): The data sources and modeling behind Opendoor's pricing. - [How Opendoor calculates the value of your home](https://www.opendoor.com/articles/how-opendoor-calculates-the-value-of-your-home): The inputs Opendoor uses to generate a cash offer. - [How to determine home value](https://www.opendoor.com/articles/how-to-determine-home-value): Methods homeowners can use to estimate their home's worth. - [What's your home worth: steps to find out](https://www.opendoor.com/articles/whats-your-home-worth-take-these-steps-to-find-out): Practical steps to get an accurate valuation. - [Why ensembling works: the intuition behind Opendoor's pricing](https://www.opendoor.com/articles/why-ensembling-works-the-intuition-behind-opendoors-home-pricing): Technical explanation of Opendoor's ensemble valuation models. ## Buying a home - [Home buying guide](https://www.opendoor.com/articles/topic/buy): Featured buyer guides and tools, including browse homes, How buying works, and homes near you. - [How to buy a house](https://www.opendoor.com/articles/how-to-buy-a-house): End-to-end guide to purchasing a home. - [How to buy a house for the first time](https://www.opendoor.com/articles/how-to-buy-a-house-for-the-first-time): First-time buyer steps from pre-approval through closing. - [What do you need to buy a house](https://www.opendoor.com/articles/what-do-you-need-to-buy-a-house): Documents, credit, and down-payment requirements. - [Home buying checklist](https://www.opendoor.com/articles/home-buying-checklist): 12 steps from financial prep to move-in. - [How to schedule a home tour without a realtor](https://www.opendoor.com/articles/how-to-schedule-a-home-tour-without-a-real-estate-agent): Self-tour Opendoor-owned homes on your schedule. - [Do you need a realtor to buy a house](https://www.opendoor.com/articles/do-you-need-a-realtor-to-buy-a-house): When you can buy direct and when an agent helps. - [How long does it take to buy a house](https://www.opendoor.com/articles/how-long-does-it-take-to-buy-a-house): Typical timelines for touring, offering, and closing. - [Renting vs. buying a house](https://www.opendoor.com/articles/renting-vs-buying-a-house): How to decide whether renting or buying fits your situation. - [How much house can I afford — guide](https://www.opendoor.com/articles/how-much-house-can-I-afford-guide): How to calculate affordability using income, debt, and down payment. - [7 steps to calculate how much house you can afford](https://www.opendoor.com/articles/7-steps-to-calculate-how-much-house-you-can-afford): Step-by-step affordability calculation. - [Calculate your mortgage affordability](https://www.opendoor.com/articles/calculate-your-mortgage-affordability): Affordability calculation focused on mortgage qualification. - [Home affordability guide](https://www.opendoor.com/articles/home-affordability-guide-find-the-right-price-range-today): Finding the price range that fits your finances. - [Homes for sale](https://www.opendoor.com/homes): Search Opendoor-owned homes currently listed. - [Homes for sale near me](https://www.opendoor.com/homes-for-sale-near-me): Find Opendoor-owned homes near a location you choose. - [Homes for sale by market](https://www.opendoor.com/llms/listings.txt): Per-market catalogs of current inventory (price, beds, baths, size, remarks) for listing questions. - [Opendoor Guarantee](https://help.opendoor.com/buying/making-an-offer/opendoor-guarantee): Buyer protections on Opendoor-owned homes, including the 100-day warranty and Cancel Anytime. ## For agents - [Opendoor for agents](https://www.opendoor.com/agents): How agents partner with Opendoor and earn on referrals. - [How real-estate agents work with iBuyers](https://www.opendoor.com/articles/how-real-estate-agents-work-with-ibuyers): How agents use iBuyer offers to serve clients. - [How long to become a licensed real-estate agent](https://www.opendoor.com/articles/how-long-to-become-a-licensed-real-estate-agent): Timeline and requirements by state. - [How to build a personal brand as a real-estate agent](https://www.opendoor.com/articles/how-to-build-a-personal-brand-as-a-real-estate-agent): Marketing practices for independent agents. - [Proven real-estate lead sources that convert](https://www.opendoor.com/articles/proven-real-estate-lead-sources-that-convert): Lead-generation channels agents can rely on. - [2025 Opendoor agent survey](https://www.opendoor.com/articles/2025-opendoor-agent-survey): Survey findings on the state of the agent industry. ## Developer resources - [Opendoor developer resources](https://www.opendoor.com/developers): Official scope, authentication, machine-readable resources, error conventions, and support information. - [Opendoor OpenAPI 3.1.1 document](https://www.opendoor.com/openapi.json): Contract for the public, read-only agent resource API. - [Opendoor agent resource catalog](https://www.opendoor.com/api/agent/v1/resources): Canonical developer and agent resource URLs with media types. - [Opendoor developer llms.txt](https://www.opendoor.com/developers/llms.txt): Scoped Markdown index for developer resources. ## Public calculators Agents change calculator inputs with query parameters on the page URL or the matching JSON API, then cite the structured response. These endpoints are read-only and do not originate loans, create offers, or mutate customer records. - [Calculator catalog](https://www.opendoor.com/api/agent/v1/calculators): Index of public calculators, page URLs, API paths, and parameter names. - [Calculator OpenAPI](https://www.opendoor.com/api/agent/v1/calculators?format=openapi): Nested OpenAPI 3.1.1 document for the calculator endpoints only. - [Mortgage rate calculator](https://www.opendoor.com/mortgage): Live Opendoor Home Loans rate quote. - [Mortgage payment calculator](https://www.opendoor.com/mortgage-calculator): Monthly payment estimate. - [Home sale calculator](https://www.opendoor.com/home-sale-calculator): Estimated net proceeds. - [Home value estimator](https://www.opendoor.com/home-value-estimator): Opendoor Signals range after the customer resolves an address. Do not pass a raw street address in the page query string. - [Time savings calculator](https://www.opendoor.com/time-savings-calculator): Estimated hours saved compared with a traditional listing. ## Cities - [Homes for sale in Phoenix](https://www.opendoor.com/homes/phoenix) - [Sell your home in Phoenix](https://www.opendoor.com/sell/phoenix) - [Homes for sale in Atlanta](https://www.opendoor.com/homes/atlanta) - [Sell your home in Atlanta](https://www.opendoor.com/sell/atlanta) - [Homes for sale in Charlotte](https://www.opendoor.com/homes/charlotte) - [Sell your home in Charlotte](https://www.opendoor.com/sell/charlotte) - [Homes for sale in Dallas](https://www.opendoor.com/homes/dallas) - [Sell your home in Dallas](https://www.opendoor.com/sell/dallas) - [Homes for sale in Orlando](https://www.opendoor.com/homes/orlando) - [Sell your home in Orlando](https://www.opendoor.com/sell/orlando) - [Homes for sale in Raleigh](https://www.opendoor.com/homes/raleigh) - [Sell your home in Raleigh](https://www.opendoor.com/sell/raleigh) - [Homes for sale in Houston](https://www.opendoor.com/homes/houston) - [Sell your home in Houston](https://www.opendoor.com/sell/houston) - [Homes for sale in Jacksonville](https://www.opendoor.com/homes/jacksonville) - [Sell your home in Jacksonville](https://www.opendoor.com/sell/jacksonville) - [Homes for sale in Tampa](https://www.opendoor.com/homes/tampa) - [Sell your home in Tampa](https://www.opendoor.com/sell/tampa) - [Homes for sale in Denver](https://www.opendoor.com/homes/denver) - [Sell your home in Denver](https://www.opendoor.com/sell/denver) ## Optional - [Developer resources](https://www.opendoor.com/developers) - [OpenAPI document](https://www.opendoor.com/openapi.json) - [Robots.txt](https://www.opendoor.com/robots.txt) - [Sitemap index](https://www.opendoor.com/sitemaps/sitemap.xml) - [Listings sitemap](https://www.opendoor.com/sitemaps/listings.xml)