Photos lie by omission
Wide-angle stills hide layout, light, and scale. Buyers book viewings to answer what one orbit would answer. Agents report 6 to 10 visits per sale, half disqualified in the doorway.
Phone-first 3D for listings
Sparse phone photos. One 3D twin buyers can walk.
HouseTwin will reconstruct a measurable 3D scene from sparse phone views. No scanner, no tripod, no reshoot. An agent shoots in minutes, shares a link, and skips wasted viewings.
- Sparse
- set of phone photos, no scanner
- Minutes
- capture time on site
- 1 link
- web 3D, no app to install
Problem
Listings still sell from flat photos. Buyers want space.
Scanners do not scale
Scanner-class capture is sharp but slow. Hardware rental, trained operator, hours on site, a day of processing. It never made sense for a small rental or a quick resale.
NeRFs were close, too fragile
Dense photo sets work in the lab. A few casual phone shots with glare, clutter, and thin overlap usually break. That sparse-view gap is what HouseTwin aims to close.
How it works
Shoot like a buyer, not a surveyor.
The pipeline is designed to assume bad input. It recovers camera poses, fills unseen areas with priors, and ships a light web mesh instead of a heavy scan.
Capture it yourself
Walk corner to corner and shoot a sparse set of phone photos with overlap. No visit from us, no scanner, no training. A guide flags blur and backlight on the spot.
input: your phone photos with EXIF
Reconstruct from few views
Planned: learned matchers recover poses, depth priors seed geometry, splats densify, then bake a light mesh with true scale.
planned: poses to splats to mesh
Share one link
Orbit and floor-plan view in the browser. Opens on a buyer phone on 4G. The agent sees what was viewed.
output: light web mesh plus plan
Demo · concept
Sparse snapshots in. Solid twin out.
Auto-play below shows the intended flow. Photos feed the solver, splats converge, mesh locks. Drag to orbit at any time.
aligning views5%
poses: solving, splats: seeding, mesh: none
drag to orbit · scroll to zoom
Concept preview rendered live. The full pipeline is still to be built.
Plan
Designed for sparse views, not dense scans.
STEP A
Recover poses
Learned matching plus phone EXIF and motion data. A bad view gets rejected instead of warping the scene.
STEP B
Seed geometry
Depth priors fill in plain walls. Doors and windows anchor scale. Goal is rooms that measure close enough for listings.
STEP C
Splats, then mesh
View synthesis first, then bake to a light mesh so the twin opens fast on a buyer phone.
STEP D
Show confidence
Every twin should ship with a coverage map. Uncertain corners get marked, not invented. One reshoot, not a reshoot day.
Pilot · five homes
First twins, with five early partners.
No visit needed. Shoot photos on your own phone, send them in, get back a twin link. Free for the first five homes.
01 · CORNER FLAT
Light flat, awkward hall
Long hall with mixed light. The twin should settle layout questions before a visit.
slot open
02 · FAMILY HOUSE
House with garden stairs
Tests the exterior to interior handoff across levels.
slot open
03 · SMALL RENTAL
Small unit, fast turnover
If capture takes more than minutes here, the product fails.
in talks
04 · RENOVATED UNIT
Renovated kitchen, low light
Glossy surfaces and an evening shoot. Hard case for depth.
slot open
05 · OLDER LAYOUT
Layout buyers misread
Plan view matters more than photos. Twin plus true floor plan.
slot openHave a home? Get one of the first five twins.
No visit, no scanner. Send phone photos, get back a twin link within a day.