With Seoul's official property prices surging 18.7%, multi-homeowners and high-value apartment owners find it hard to predict their holding tax burden. Tax accountant consultations cost 100,000-300,000 KRW (~$75-$225) per case, and the National Tax Service calculator cannot simulate comprehensive property tax, local property tax, and health insurance premiums together, causing missed tax-saving decision timing. Every year during the March-June official price announcement season, millions of property owners face this issue.
Solution
Automatically reflect official price changes to simulate comprehensive property tax, local property tax, and health insurance premiums, and instantly generate comparison tables for tax-saving scenarios like sale, gift, or corporate conversion. Differentiated by automatic checks for joint ownership division, one-homeowner special cases, and other deduction conditions.
Target: Property owners in the Seoul metropolitan area with official prices of 900 million KRW (~$675,000) or more, multi-homeowners and prospective retirees in their 40s-60s.
Revenue Model: Premium SaaS: 29,000 KRW (~$22) per account per month, 20% discount for annual payment. Basic single-home simulation is free; multi-home and corporate scenarios are paid.
Ecosystem Role: Supplier
MVP Estimate: 2_weeks
NUMR-V Scores
N Novelty
2.0/5
U Urgency
5.0/5
M Market
5.0/5
R Realizability
5.0/5
V Validation
5.0/5
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.
N=.15 U=.20 M=.15 R=.30 V=.20
Feasibility (68%)
Tech Complexity
29.3/40
Data Availability
18.8/25
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 (80/100)
Competition
10.0/20
Market Demand
20.0/20
Timing
18.0/20
Revenue Signals
10.5/15
Pick-Axe Fit
12.0/15
Solo Buildability
9.0/10
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.