---
title: "Interactive floor plans: formats, costs and the mistakes that lose buyers"
canonical: "https://en.prostor-agency.com/blog/interactive-floor-plans"
summary: "From scanned PDFs to clickable unit selection: which floor plan formats actually help sell apartments online, what each level costs, and the mistakes we keep seeing on developer websites."
publishedAt: "2026-08-21"
---

Nobody buys an apartment from a hero render. The decision happens on
the floor plan: this is where the buyer mentally places the bed,
argues about the kitchen and decides whether the money is worth it.
Which makes it strange how many developer websites treat plans as an
attachment, a scanned drawing in a PDF three clicks deep.

We build sales websites for developments and the plan section is
always where the arguments happen. Here is the format ladder as we see
it, with honest costs and the failure modes of each step.

## The ladder, from worst to best

A scanned architectural drawing is level zero. Wall thicknesses,
dimension chains, no furniture, hard to read even on a desktop. It
signals that the developer did not think about the buyer, and on a
phone it is simply noise.

A redrawn 2D plan is the workhorse. Clean lines, furniture that shows
scale honestly, area per room, orientation. For most projects this
level, done properly, outsells anything fancier that skips the basics.

A 3D plan helps people who cannot read flat drawings, and that is a
bigger share of buyers than architects like to admit. It costs more to
produce and it dates quickly if layouts change during construction, so
we usually add it for the running layouts, not the whole grid.

An interactive selector is the level where the plan stops being a
picture. The buyer filters by rooms and budget, sees what is free,
opens a specific unit with its plan, floor and price, and asks about
that unit instead of writing "send me all plans". We walked through
how these work in the [apartment selector article](/blog/apartment-selection-ux);
the short version is that selection by specific unit changes the
quality of every lead that follows.

Selection on the facade or the masterplan sits at the top: the buyer
taps the actual building and floors light up. It is the most tactile
format and the most expensive to do honestly, because it needs proper
renders and disciplined data behind it. Worth it for large or
image-driven projects; unnecessary for a single small building.

## Where floor plans lose buyers

The same mistakes repeat across markets, so a short list. Plans
without prices force a request that mostly never comes. Plans without
room areas start a support conversation that a caption would have
closed. Plans hidden in downloads never get seen on phones, and
[phones are where off-plan buyers live](/blog/off-plan-project-website).
Availability that lives only in the sales CRM makes the site lie
within a month, in both directions: buyers ask about sold units and
skip free ones they assumed were gone.

One more, subtler: replacing plans with interior renders. A beautiful
visual of one furnished flat answers a different question. The buyer
comparing three projects needs geometry and numbers, and when the site
gives them a mood instead, the comparison happens on a competitor's
site that published the boring drawing.

## What this costs

The honest ranges, consistent with what we quote on projects: vendor
widgets run $100–300 a month and are a reasonable start for a small
building. A custom selector inside the website is usually $3,000–8,000
within a bigger build. A landing page with simple unit selection
starts around $2,500; a full sales website with the selector, plans
and live availability runs $5,000–12,000. The spread depends less on
the pretty parts and more on the data: how availability, prices and
holds get from the CRM to the page.

If you are planning a project site and want to see how unit selection
could look on your building, [tell us about the development](/services/real-estate)
and we will sketch the selection flow and price the website. Reply
within one business day.