Travel & marketplace · United States · USD
Cost to build an app like Zillow
A Zillow-like app is a data ingestion and search product with a lead generation business behind it. Listings arrive in bulk from MLS feeds and have to be normalised, deduplicated, geocoded and kept fresh. What users experience is a map; what you build is a pipeline.
What you are actually building
An app like Zillow is three or four screens people recognise sitting on a great deal of engineering they never see. These are the screens that define the shape — and the part of each one that costs real money.
Map, filters, saved searches
Clustered pins, draw-to-search and an alert when something new matches. Filtering a million listings in under a second is an index problem.
The listing
Galleries, floor plans, tours, schools and commute times — mostly third-party feeds, each with its own licence terms and outages.
Lead routing
The revenue is a qualified enquiry reaching the right agent within seconds, with a CRM and an audit trail behind it.
Price your own version
The calculator below is preloaded with the Zillow template — its features, architecture and a planning scale for year one. Remove what you do not need, add what you do, and the estimate follows.
Building an app like Zillow
A starting template, not a specification. Every feature, number and technology choice below is yours to change.
Reference template
Zillow
A Zillow-like app is a data ingestion and search product with a lead generation business behind it. Listings arrive in bulk from MLS feeds and have to be normalised, deduplicated, geocoded and kept fresh. What users experience is a map; what you build is a pipeline.
- Preloaded features
- 12
- Category
- Real estate
Map, filters, saved searches
Clustered pins, draw-to-search and an alert when something new matches. Filtering a million listings in under a second is an index problem.
The listing
Galleries, floor plans, tours, schools and commute times — mostly third-party feeds, each with its own licence terms and outages.
Lead routing
The revenue is a qualified enquiry reaching the right agent within seconds, with a CRM and an audit trail behind it.
What makes a Zillow-like app expensive
Three things dominate this shape of product. Everything else is comparatively ordinary app development.
MLS ingestion
Hundreds of regional feeds in inconsistent formats, with licensing rules about what can be displayed. Normalisation and deduplication are continuous work.
Map-based search
Polygon and radius search, clustering at every zoom level, and results that stay fast while the user pans.
Lead routing
Matching enquiries to agents, delivering them within seconds, and tracking attribution — the part that actually earns revenue.
Cost breakdown for the default template
Before you change anything. Costed at the midpoint of a $118–$155/hr blended US rate.
Features in a Zillow-like app
The starting list, longest build first — each bar is that feature’s share of the biggest one, so you can see where the hours actually go. Every row is a checkbox in the calculator above: this is a template, not a specification.
Core features (10)
509h totalAdvanced features (2)
283h totalIntegrations (6)
- Google Maps Platform
- SendGrid / Resend (email)
- Salesforce
- AWS
- Amplitude / Mixpanel
- Sentry / Datadog (monitoring)
How long, and who builds it
The $547,000–$895,000 figure assumes this schedule and this team. Both scale with the answers in the calculator above — and neither is a quote.
Delivery timeline — 7–10 months
- Discovery & product definition3–4 wks
- UI/UX design5–7 wks
- Development (app + backend)16–23 wks
- Integrations & infrastructure4–6 wks
- QA & security testing4–6 wks
- Store submission & launch2–3 wks
The team — 7 people
- Product manager1×
- UI/UX designer1×
- Mobile developer1×
- Backend developer1×
- DevOps / SRE1×½
- QA engineer1×
- Data / ML engineer1×
The phases add to more than the total on purpose: design starts before discovery finishes and QA runs alongside development rather than after it. 7 people is about 6.5 full-time equivalents — a smaller team takes proportionally longer, and a much larger one does not go proportionally faster. The two roles most often missing from a first plan are DevOps and QA, which together are 16% of this build.
Technology considerations
A stack that would serve this product shape well. A recommendation for what you could build — not a claim about what Zillow runs.
| Layer | Suggestion |
|---|---|
| Mobile | React Native, with a heavily optimised map and list view |
| Backend | Node.js or Python services with a listings ingestion pipeline |
| Database | PostgreSQL with PostGIS for polygon and radius search |
| Cache | Redis for search results and saved-search evaluation |
| Search | OpenSearch with geo-shape queries and faceting |
| Cloud | AWS |
| Object storage | S3 for listing photos, floor plans and tours |
| CDN | CloudFront |
| Media pipeline | Bulk image ingestion, resizing and watermarking |
| Monitoring | Datadog with ingestion-freshness and lead-delivery dashboards |
| ML serving | A managed inference endpoint (SageMaker, Vertex AI) with an offline evaluation pipeline |
Top cost drivers
- 1
Medium scale traffic and usage21% of the build
Caching, queues and real monitoring become mandatory. That is real engineering: caching layer (redis or equivalent) in front of hot reads; background job queue for anything slower than a request; read replicas and query-level database tuning. Lower your year-one traffic assumptions and this shrinks immediately.
- 2
Advanced backend architecture12% of the build
Needed when traffic is high enough, or spiky enough, that a single service cannot absorb it and a slow endpoint takes the whole product down with it.
- 3
6 third-party integrations8% of the build
Every external service is code you write, failure modes you handle and an API that will change without asking you. The ones you can defer are the cheapest scope cuts available.
- 4
High security posture5% of the build
Controls, hardening, audit logging and penetration testing. Retrofitting these after launch typically costs two to three times as much as building them in.
- 5
React Native2% of the build
A shared codebase covers both stores, with native work still required around hardware, payments and background processing.
Infrastructure and maintenance
Neither of these is part of the build figure, and neither of them stops.
Cloud infrastructure
$1K – $10K/month
- Baseline environment$120–$420
- Application compute$675–$2,400
- Database$27–$108
- Object storage$105–$130
- CDN & bandwidth$8–$19
- Transaction processing infrastructure$0–$2
Annual maintenance
$82K – $224K/year
15–25% of build cost per year: bug fixes, iOS and Android version updates, SDK and dependency upgrades, security patching and small improvements. Cloud costs are the separate figure alongside.
Building an app like Zillow — common questions
How much does it cost to build an app like Zillow?
Using this site's default profile — 12 features, react native, a advanced backend and medium scale traffic — the estimate is $547,000 to $895,000 for a US team, or roughly 5,153 engineering hours at a blended $118–$155 per hour. That figure covers design, both apps, backend, infrastructure, integrations, security, QA, DevOps and project management. It excludes cloud hosting, vendor fees, marketing and legal. Change any answer in the calculator on this page and the number moves with it.
How long does it take to build an app like Zillow?
About 7–10 months with the team this estimate assumes — 7 people, roughly 6.5 full-time equivalents. Discovery and design run first and partly in parallel, development takes about half the calendar, and QA overlaps the back half rather than following it. A smaller team takes proportionally longer; a much larger one does not go proportionally faster, which is why compressing this schedule costs more than it saves below a certain point.
What team do you need to build an app like Zillow?
1× product manager, 1× ui/ux designer, 1× mobile developer, 1× backend developer, 1× devops / sre (part-time), 1× qa engineer, 1× data / ml engineer. That is what 5,153 hours of work distributed across 10 disciplines actually requires. The roles people most often leave out of their own plan are DevOps and QA, which together are about 16% of this build.
What does an app like Zillow cost to run each month?
Cloud infrastructure is estimated at $1,386 to $9,529 per month at the scale this profile assumes, driven mainly by compute and database. Third-party services add $1,800 to $17,000. Separately, budget $82,000 to $224,000 a year for maintenance — bug fixes, OS and SDK updates and security patching. None of these are part of the build figure.
How do I get listing data?
MLS access through IDX or RESO Web API feeds, which require broker participation and carry display rules. It is a licensing and compliance workstream before it is an engineering one; budget 300–500 hours for ingestion and normalisation.
Do I need a valuation model?
Not to launch. An automated valuation is a headline feature but it requires a data science team, transaction data and continuous validation — 500+ hours plus data licensing. Most products launch without one.