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78score
HN · front_page
Freemium
Build

Property Sun & Shade Planner

Build a web app for homeowners, renters, and small property managers to evaluate sun exposure, shade timing, and future changes to yards, patios, balconies, and shared spaces. The strongest demand appears where people need practical decisions such as tree placement, comfort planning, and judging whether an outdoor area is usable in summer.

5 channels30-day mention trend: latest 1, peak 4, 30-day series
View on Reddit
Discovered Aug 13, 2026

Why this matters

You have an outdoor area that looks fine on paper but becomes unpleasant or unusable depending on time of day, season, and surrounding obstacles. Standard weather tools tell you sunset time for a city, not whether your yard, balcony, dog run, or shared green space is actually blasted by sun or already dark behind hills and buildings. You may also be considering planting trees or changing the layout, but guessing future shade is unreliable. Existing shade viewers are interesting yet often too rough around trees, too map-centric, or too clumsy on mobile for everyday planning. What you really want is a simple property-level planner that helps you make comfort and layout decisions with confidence.

  • · Built for Homeowners, renters with outdoor space, HOA boards, and small property managers who need to understand usability of patios, lawns, gardens, dog parks, and shared outdoor areas..
  • · Most likely monetization: Freemium.

The Pain · Narrative

You have an outdoor area that looks fine on paper but becomes unpleasant or unusable depending on time of day, season, and surrounding obstacles. Standard weather tools tell you sunset time for a city, not whether your yard, balcony, dog run, or shared green space is actually blasted by sun or already dark behind hills and buildings. You may also be considering planting trees or changing the layout, but guessing future shade is unreliable. Existing shade viewers are interesting yet often too rough around trees, too map-centric, or too clumsy on mobile for everyday planning. What you really want is a simple property-level planner that helps you make comfort and layout decisions with confidence.

Score Breakdown

Pain Intensity8/10
Willingness to Pay6/10
Ease of Build5/10
Sustainability7/10

Market Signal

30-day mention trendPeak: 4
Sparkline: latest 1, peak 4, 30-day series
Channels covered
front_pagewebdevsmallbusinessproductivityselfhosted

Go-to-Market

Exact target user

Homeowners in hot-weather metros who are deciding how to improve a patio, garden, balcony, or dog-friendly outdoor area.

Estimated user count

a few hundred thousand reachable early adopters globally

Primary acquisition channel

SEO long-tail

Price anchor

$9/month

First milestone

50 paid property reports or subscriptions from organic search within 30 days

MVP Scope · 1–2 weeks

Week 1
  • Build map search and property polygon selection for one pilot city
  • Integrate sun-position and terrain shadow calculation for hourly playback
  • Add manual object drawing with height input for trees and structures
  • Generate simple daily sun-hours summary for selected polygons
  • Create landing page with waitlist and sample property screenshots
Week 2
  • Add shareable report page with morning, midday, and evening snapshots
  • Implement account save for up to three properties
  • Add seasonal comparison view for summer and winter solstice dates
  • Instrument analytics for searches, saved projects, and report downloads
  • Launch content pages targeting searches about yard shade and patio sun exposure
MVP Features: Address-based hourly shade timeline for a selected date · Manual add/remove trees and structures with height sliders · Seasonal sun-hours report for a defined yard or patio polygon

Differentiation

Existing solutions
ShadowmapPeakFinderLocal sunshine terrace maps
Our angle
There is room for a more accurate, mobile-first, scenario-planning sunlight platform that serves both everyday consumers and higher-value planning use cases like landscaping, property evaluation, and outdoor energy setup.

Why This Might Fail

Self-rebuttal — the most important trust signal

  1. 1General consumers may treat it as a novelty and not enough of a recurring problem to justify subscription revenue.
  2. 2If the first few neighborhoods have wrong tree or building data, trust could collapse before retention is established.
  3. 3Free map-based tools may satisfy casual curiosity, leaving only a narrower slice willing to pay for property planning.

Evidence Summary

How AI synthesized this insight — no verbatim quotes

Multiple commenters described real planning uses beyond curiosity: checking eclipse visibility from home, estimating when terrain removes sunlight from a park, and wanting to model future tree placement for outdoor comfort. Several also discussed local inaccuracy around trees and structures, which suggests a commercial opening for a property-focused tool that combines scenario planning with clearer confidence and better usability.

1 1 post analyzed5 5 channelsAI · AI synthesized · no verbatim

Action Plan

Validate this opportunity before writing code

Recommended Next Step

Build

Strong demand signals detected. Real pain, real willingness to pay — start building an MVP.

Landing Page Copy Kit

Ready-to-paste copy based on real Reddit community language — no editing required

Headline

Property Sun & Shade Planner

Sub-headline

Build a web app for homeowners, renters, and small property managers to evaluate sun exposure, shade timing, and future changes to yards, patios, balconies, and shared spaces. The strongest demand appears where people need practical decisions such as tree placement, comfort planning, and judging whether an outdoor area is usable in summer.

Who It's For

For Homeowners, renters with outdoor space, HOA boards, and small property managers who need to understand usability of patios, lawns, gardens, dog parks, and shared outdoor areas.

Feature List

✓ Address-based hourly shade timeline for a selected date ✓ Manual add/remove trees and structures with height sliders ✓ Seasonal sun-hours report for a defined yard or patio polygon

Where to Validate

Share your landing page in r/HN · front_page — that's exactly where these pain points were discovered.

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Report & PRDBUSINESS

Other opportunities in the same theme

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Frequently asked questions

Who feels this pain?
Homeowners, renters with outdoor space, HOA boards, and small property managers who need to understand usability of patios, lawns, gardens, dog parks, and shared outdoor areas.
Is this a real opportunity?
This opportunity scores 78/100 on Pain Spotter's composite metric (pain intensity, willingness to pay, technical feasibility and sustainability). Validate further before committing engineering time.
How should I validate it?
Run 5 customer-discovery conversations with the target audience, post a landing page with a waitlist, and check the linked source post for recent activity before building.