Property Sale Timing Coach

3.80

Derivation Chain

Step 1 Presidential real estate liquidation & normalization policy

→

Step 2 Real estate transaction activation

→

Step 3 Seller-side pricing & tax decision-making tool

Problem

As real estate normalization policies drive more multi-property owners to consider selling, calculating the combined impact of capital gains tax, comprehensive real estate tax, and health insurance premium adjustments requires either paying a tax accountant $225–$375 per consultation or separately querying the National Tax Service, National Health Insurance, and local government systems. After-tax proceeds can differ by tens of thousands of dollars depending on sale timing, yet without simulation tools, owners rely on gut-feel decision-making.

Solution

Input property details (acquisition price, holding period, assessed value) to run an integrated simulation of capital gains tax, comprehensive real estate tax, and health insurance premium changes by sale timing. Provides a month-by-month after-tax net proceeds comparison graph over a 12-month horizon, a multi-property tax surcharge avoidance strategy guide, and a long-term holding special deduction application timeline.

Target: Multi-property owners holding 2–5 properties (ages 40–60), pre-retirees considering property liquidation

Revenue Model: Premium one-time simulation $7.50, Monthly Subscription $22/mo (unlimited simulations + alerts), tax accountant referral fee $22 Per Transaction

Ecosystem Role: Consumer

MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty

3.0/5

U Urgency

4.0/5

M Market

5.0/5

R Realizability

4.0/5

V Validation

3.0/5

NUMR-V Scoring System

N Novelty	1-5	How uncommon the service is in market context.
U Urgency	1-5	How urgently users need this problem solved now.
M Market	1-5	Market size and growth potential from proxy indicators.
R Realizability	1-5	Buildability for a small team with realistic constraints.
V Validation	1-5	Validation signal quality from competition and demand data.

SaaS N=.15 U=.20 M=.15 R=.30 V=.20 Senior N=.25 U=.25 M=.05 R=.30 V=.15

Feasibility (70%)

Tech Complexity

29.3/40

Data Availability

20.6/25

MVP Timeline

20.0/20

API Bonus

0.0/15

Feasibility Breakdown

Tech Complexity	/ 40	Difficulty of core implementation stack.
Data Availability	/ 25	Practical availability and cost of required data.
MVP Timeline	/ 20	Expected time to ship a usable MVP.
API Bonus	/ 15	Bonus for viable public API leverage.

Market Validation (59/100)

Competition

8.0/20

Market Demand

6.2/20

Timing

20.0/20

Revenue Signals

10.5/15

Pick-Axe Fit

7.5/15

Solo Buildability

7.0/10

Validation Breakdown

Competition	/ 20	Signal quality from competitor landscape.
Market Demand	/ 20	Demand proxies from search and mention patterns.
Timing	/ 20	Fit with current shifts in tech, behavior, and regulation.
Revenue Signals	/ 15	Reference evidence for monetization viability.
Pick-Axe Fit	/ 15	How well the concept serves participants in a trend.
Solo Buildability	/ 10	Practicality for lean-team implementation.

Technical Requirements

Backend [medium] Frontend [medium] Data Pipeline [low]

Dashboard