B

Empty Nest Housing Optimizer

2.85

Derivation Chain

Step 1 Real Estate downsizing decision
→
Step 2 Post-sale alternative housing selection
→
Step 3 Unable to compare 30-year total costs of alternatives (small purchase / Jeonse / Monthly Rent / rural relocation)

Problem

Adults aged 55-65 who sell their large home after children move out have no basis to determine which option — purchasing a smaller apartment, Jeonse (Lease Deposit), Monthly Rent, or relocating to rural areas — is most advantageous long-term. Comparing the 30-year total housing cost across each option (property appreciation/depreciation, Jeonse deposit opportunity cost, Monthly Rent escalation rate, rural relocation initial costs) requires manual Excel simulation, but with too many variables, people give up and decide by 'gut feeling.'

Solution

On the web: (1) Enter estimated sale amount and current assets, (2) simulate 30-year total costs across 4 alternative housing scenarios — small apartment purchase / Jeonse (Lease Deposit) / Monthly Rent / rural relocation, and (3) display comparison graphs of asset depletion timeline, monthly housing cost trends, and healthcare accessibility scores.

Target: Ages 57-65 with children fully independent, planning to sell 100+ sqm apartments in Seoul/metropolitan area, couples planning a 2-person housing transition
Revenue Model: Basic 2-scenario comparison Free, full 4-scenario comparison + PDF export + scenario saving at $5.90 Per Transaction
Ecosystem Role: Consumer
MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty
3.0/5
U Urgency
3.0/5
M Market
3.0/5
R Realizability
3.0/5
V Validation
2.0/5
NUMR-V Scoring System
N Novelty1-5How uncommon the service is in market context.
U Urgency1-5How urgently users need this problem solved now.
M Market1-5Market size and growth potential from proxy indicators.
R Realizability1-5Buildability for a small team with realistic constraints.
V Validation1-5Validation signal quality from competition and demand data.
Each dimension is scored 1-5 and weighted into grade S/A/B/C/D.
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
20.8/25
MVP Timeline
20.0/20
API Bonus
0.0/15
Feasibility Breakdown
Tech Complexity/ 40Difficulty of core implementation stack.
Data Availability/ 25Practical availability and cost of required data.
MVP Timeline/ 20Expected time to ship a usable MVP.
API Bonus/ 15Bonus for viable public API leverage.
Total 100 points; below 50% is filtered out.

Market Validation (53/100)

Competition
8.0/20
Market Demand
6.2/20
Timing
14.0/20
Revenue Signals
9.0/15
Pick-Axe Fit
9.0/15
Solo Buildability
7.0/10
Validation Breakdown
Competition/ 20Signal quality from competitor landscape.
Market Demand/ 20Demand proxies from search and mention patterns.
Timing/ 20Fit with current shifts in tech, behavior, and regulation.
Revenue Signals/ 15Reference evidence for monetization viability.
Pick-Axe Fit/ 15How well the concept serves participants in a trend.
Solo Buildability/ 10Practicality for lean-team implementation.
Total 100 points; below 50 is filtered out.

Technical Requirements

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