B

Downsizing Move Total Cost Planner

3.55

Derivation Chain

Step 1 Real Estate downsizing and relocation decision support
→
Step 2 Missing cost items in downsizing relocations
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Step 3 Total cost visualization including capital gains tax, moving costs, remodeling, and lifestyle infrastructure changes

Competitor references

No usable source links are available for this idea. Its signal notes and scores need independent verification.

Problem

When people in their 50s–60s want to downsize after children move out (e.g., from a 112㎡ to 79㎡ apartment), they typically only calculate capital gains tax before deciding. In reality, brokerage fees, moving costs, interior renovation, acquisition tax, and lifestyle infrastructure changes (commuting costs, healthcare accessibility) add $15,000–$37,500 (~20–50M KRW) more than expected. There is no tool that totals these costs upfront, so homeowners only realize 'the net savings are much less than expected' after the move.

Solution

Users enter their current address and candidate relocation addresses. The tool itemizes: (1) capital gains tax, (2) acquisition tax, (3) brokerage fees, (4) moving costs, (5) estimated interior/remodeling costs, and (6) monthly living cost differences (transportation, healthcare, amenities) — summarizing the 'actual net asset change after relocation' on a single page. Side-by-side comparison of 2–3 candidate locations is supported.

Target: Ages 55–65, children have moved out, currently owning 99㎡+ apartments, considering downsizing or relocating to suburban/rural areas
Revenue Model: Free single comparison. 3+ candidate comparisons + detailed PDF report at $3.75 per transaction (~5,000 KRW). Moving company and interior contractor matching commissions.
Ecosystem Role: Infrastructure
MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty
4.0/5
U Urgency
3.0/5
M Market
3.0/5
R Realizability
4.0/5
V Validation
3.0/5
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.
N=.15 U=.20 M=.15 R=.30 V=.20

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 (57/100)

Competition
8.0/20
Market Demand
6.2/20
Timing
14.0/20
Revenue Signals
10.5/15
Pick-Axe Fit
10.5/15
Solo Buildability
8.0/10
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