Can a brokerage build its own home search site?

Yes, and many do, using their MLS data feed under its display rules. A brokerage site with search, saved homes and lead routing to its own agents is closer to the MVP here than to a national portal.

Where does listing data come from?

Usually from a local MLS feed or a licensed listing data provider. Access, display rules and costs depend on the MLS and your license, so confirm them before planning the build.

Is this what Zillow spent to build its app?

No. It is Eltherion's estimate for building a comparable first version today. It says nothing about what Zillow spent, and Eltherion is not affiliated with Zillow. A product at that company's scale has years of work and teams behind it that no MVP includes.

How can I lower the cost?

Launch with fewer integrations, one market and one platform, and leave the full-platform features until users ask for them. The adjustable calculator shows how each choice moves the range.

Local, booking and real estate apps

How much does it cost to build an app like Zillow?

By Nick McCandless, founder of EltherionUpdated October 30, 2026

Short answer

Eltherion prices an MVP of an app like Zillow, a real estate listings and home search app, at $31k to $90k. A full platform with the features listed below runs $55k to $160k. These are Eltherion's own estimate ranges for building a comparable product, not what Zillow spent; your fixed price comes after a free scoping call, and small, tightly scoped work starts as low as $1,000.

Adjust this estimate in the calculator Get a fixed quote

An app like Zillow lets people search homes on a map, save favorites, get alerts and contact agents. The defining work is the listing data: where it comes from, how often it updates and what the data license allows you to show.

What an MVP of an app like Zillow costs, feature by feature

The first version below is the smallest product people could actually use. Core features are covered by the base price for a web app; each outside service the app connects to, and each add-on, adds its own line.

Eltherion estimate for an app like Zillow, MVP (updated October 30, 2026)
Line item	What it covers	Estimate
Core web app (MVP)	Map and list search, Listing pages, Accounts and saved homes, Lead routing	$25k to $75k
Listing data feed	Import listings from an MLS or listing data provider, under its license	$2k to $5k
Maps	Map search and boundaries	$2k to $5k
Email alerts	New listings that match saved searches	$2k to $5k
Total		$31k to $90k

Map and list search: Filter by price, beds, area and more.
Listing pages: Photos, details and agent contact.
Accounts and saved homes: Favorites and saved searches.
Lead routing: Send inquiries to the right agent.

What drives the cost of an app like Zillow

Listing data access is the gate: MLS and data-provider licenses decide what you can display.
Map search with many filters needs fast queries and good indexing.
Lead routing to agents is where the business value sits.

Full platform: $55k to $160k

The full-platform tier prices the same app at full-platform scope ($45k to $135k for the core) plus these additions:

Agent CRM integration: Push leads into agents' CRM ($2k to $5k).
Mortgage calculator data: Rates from a rates provider ($2k to $5k).
Native mobile apps: Search and alerts on iPhone and Android (part of the full-platform core).
Agent and broker accounts: Profiles, listings management and reviews (part of the full-platform core).

Most products should not build this tier up front. Ship the MVP, see what users actually do, and add the pieces that earn their place. Open the full-platform estimate in the calculator.

Running costs after launch

Maintenance and small improvements: $6k to $16k a year for the MVP (18% of the build, a planning assumption).
Hosting: about $4k a year (a planning estimate; heavy usage costs more).
Three-year total for the MVP, build included: $59k to $149k.

Each integration also has its provider's own usage fees (maps, messaging, video, AI models), which depend on how much the app is used.

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Frequently asked questions

How much does it cost to build an app like Zillow?: Eltherion prices an MVP of an app like Zillow, a real estate listings and home search app, at $31k to $90k, and a full platform at $55k to $160k. These are Eltherion's estimate ranges from its published pricing model; your fixed price comes after a free scoping call. Small, tightly scoped work starts as low as $1,000.
Can a brokerage build its own home search site?: Yes, and many do, using their MLS data feed under its display rules. A brokerage site with search, saved homes and lead routing to its own agents is closer to the MVP here than to a national portal.
Where does listing data come from?: Usually from a local MLS feed or a licensed listing data provider. Access, display rules and costs depend on the MLS and your license, so confirm them before planning the build.
Is this what Zillow spent to build its app?: No. It is Eltherion's estimate for building a comparable first version today. It says nothing about what Zillow spent, and Eltherion is not affiliated with Zillow. A product at that company's scale has years of work and teams behind it that no MVP includes.
How can I lower the cost?: Launch with fewer integrations, one market and one platform, and leave the full-platform features until users ask for them. The adjustable calculator shows how each choice moves the range.

How we priced this

Every number on this page comes from Eltherion's software development cost calculator: a base range for the product type, multiplied by scope, plus a fixed range for each integration and add-on. The method is published on the cost methodology page. The feature list describes a typical comparable product; Eltherion is not affiliated with Zillow.