# Home Check

> Home Check is the pioneering Agentic AI for Architecture & Scientific Feng Shui: it doesn't just answer, it does the work — measuring orientation precisely on satellite imagery, designing code-aware homes, checking and fixing feng shui right on the plan, and delivering 2D and 3D drawings with a full analysis.
> Check well, live well

Home Check knowledge base and product information for AI assistants. Each .md link is the plain-text version of its page.

## Product
- [How Home Check works](https://myhomecheck.ai/how-it-works)
- [Home Check Assistant](https://myhomecheck.ai/assistant)
- [House design](https://myhomecheck.ai/design)
- [Feng shui check & fix](https://myhomecheck.ai/feng-shui)
- [Digitize](https://myhomecheck.ai/digitize)
- [Compass & site reading](https://myhomecheck.ai/compass)
- [Reading & PDF](https://myhomecheck.ai/report)
- [2D · 3D · Renders](https://myhomecheck.ai/studio)
- [Tokens & tiers](https://myhomecheck.ai/pricing)
- [Get the app](https://myhomecheck.ai/download)

## Who it's for
- [Who Home Check is for](https://myhomecheck.ai/for)
- [Homeowners](https://myhomecheck.ai/for/homeowners): Homeowners and anyone building, renovating or buying
- [Professionals](https://myhomecheck.ai/for/professionals): Feng shui masters, architects, contractors, real estate
- [Academia](https://myhomecheck.ai/for/academia): Students, lecturers, researchers

## Own brand & own knowledge (professionals)

> On the PRO tier, feng shui masters and architects put their logo, name, representative and phone on the cover and footer of plan PDFs, analysis reports and shared images, plus a compass ring of their own. Turn on Custom feng shui or Custom architecture in the ⚙️ assistant settings and the Home Check Assistant analyzes and designs by your knowledge — knowledge kept to your account.

- Personal brand (PRO tier): logo, name, representative, phone — plus hand signature, seal and practising licence number — printed on the cover and footer of A3 plan PDFs, feng shui analysis PDFs and shared images; a small line “Analyzed with Home Check” is always kept.
- Custom compass ring: name, degree ranges, static or dynamic by year (a Flying Star template is included), used when surveying and orienting a plan.
- Custom feng shui: install your school's answer instructions and knowledge (notes + docx, pdf, txt, md files), pick Residence or Business, test on a sample house; when on, the Home Check Assistant analyzes by that knowledge and Home Check marks nothing Correct / Wrong.
- Custom architecture: write your rules (Required / Preferred / Suggested) and confirm the rules the assistant reads back; minimum safety (structure, escape routes, local building codes) is always kept.
- Own knowledge is tied to the account and used by that account's assistant alone; other users cannot see or use it.
- For professionals: https://myhomecheck.ai/for/professionals

## Knowledge
- [Knowledge base](https://myhomecheck.ai/learn/index.md)
- [Glossary](https://myhomecheck.ai/learn/glossary/index.md): Set polarity, sitting and facing, Water Mouth, bright hall… one short definition per term, with Chinese characters and names in three languages.
- [24 Mountains](https://myhomecheck.ai/learn/24-mountains/index.md): Degree range, trigram, direction and element of every mountain on the compass.
- [House facing](https://myhomecheck.ai/learn/direction/index.md): Enter a degree and read the mountain, trigram and sitting of the house at once.
- [Guides](https://myhomecheck.ai/learn/guides/index.md): Facing, polarity, digitizing a home, fixing feng shui, the water mouth, tube houses — step by step, with common mistakes.
- [Building codes](https://myhomecheck.ai/learn/building-codes/index.md): Key requirements for houses and the documents they come from.
- [FAQ](https://myhomecheck.ai/faq/index.md): Short answers to what people ask most about Home Check.
- [Full text of the knowledge base (llms-full.txt)](https://myhomecheck.ai/llms-full.txt)

## Glossary entries
- [24 Mountains](https://myhomecheck.ai/learn/glossary/twenty-four-mountains/index.md) (二十四山): The 24 mountains divide the 360° compass into 24 equal sectors of 15°, each called a mountain.
- [Set polarity](https://myhomecheck.ai/learn/glossary/set-polarity/index.md) (立极): Setting polarity means finding the centre of a house on its floor plan and placing the compass there, turned to the measured facing degree.
- [Sitting and facing](https://myhomecheck.ai/learn/glossary/sitting-and-facing/index.md) (坐向): Sitting is the side a house leans its back against; facing is the side it looks out from.
- [Bagua](https://myhomecheck.ai/learn/glossary/bagua/index.md) (八卦): The bagua are the eight three-line trigrams of the I Ching: Qian, Kan, Gen, Zhen, Xun, Li, Kun and Dui.
- [Early Heaven and Later Heaven bagua](https://myhomecheck.ai/learn/glossary/early-and-later-heaven-bagua/index.md) (先天八卦 · 后天八卦): Early Heaven and Later Heaven are two arrangements of the eight trigrams around a circle.
- [Nine palaces (Lo Shu)](https://myhomecheck.ai/learn/glossary/nine-palaces-lo-shu/index.md) (九宫 · 洛书): The nine palaces are a 3×3 grid that divides a plan into eight palaces around a centre palace.
- [Center palace](https://myhomecheck.ai/learn/glossary/center-palace/index.md) (中宫): The center palace is the middle square of the nine palaces, around the centre of the house; in the Lo Shu it holds the number 5 and the Earth element.
- [Five elements](https://myhomecheck.ai/learn/glossary/five-elements/index.md) (五行): The five elements are Metal, Wood, Water, Fire and Earth, linked by two cycles.
- [Birth-year mountain](https://myhomecheck.ai/learn/glossary/birth-year-mountain/index.md) (年命山): A person's birth-year mountain is the compass mountain that shares the Earthly Branch of their birth year.
- [Prosperous and weak sectors](https://myhomecheck.ai/learn/glossary/prosperous-and-weak-sectors/index.md) (旺方 · 衰方): Prosperous sectors are the parts of a home considered to have strong, favourable energy for its orientation; weak sectors have faint energy.
- [Death point](https://myhomecheck.ai/learn/glossary/death-point/index.md) (死点): The death point is the sector where, given the house's orientation, energy is considered most depleted.
- [Xuan Kong Flying Stars](https://myhomecheck.ai/learn/glossary/flying-stars/index.md) (玄空飞星): Xuan Kong Flying Stars is a feng shui school in which nine stars, numbered 1 to 9, fly through the nine palaces in Lo Shu order.
- [Five Yellow](https://myhomecheck.ai/learn/glossary/five-yellow/index.md) (五黄): The Five Yellow is star number 5 among the nine stars; each year it flies to a different direction in Lo Shu order.
- [Water method](https://myhomecheck.ai/learn/glossary/water-method/index.md) (水法): Water methods read how water moves around a site — where it comes from, where it gathers and where it leaves — and compare it with the house's sitting and facing to judge good and bad.
- [Water Mouth](https://myhomecheck.ai/learn/glossary/water-mouth/index.md) (水口): The Water Mouth is where water leaves a site or the bright hall in front of a house, measured as a degree from the centre of the home.
- [Grand scale](https://myhomecheck.ai/learn/glossary/grand-scale/index.md) (大局): The grand scale is the widest range in reading landform and water: the rivers, lakes and major hills of the whole region around a site.
- [Middle scale](https://myhomecheck.ai/learn/glossary/middle-scale/index.md) (中局): The middle scale is the intermediate range in reading landform and water: the rise and fall of the land within a few kilometres of the site.
- [Small scale](https://myhomecheck.ai/learn/glossary/small-scale/index.md) (小局): The small scale is the range right around the house: the street, lane, yard and drains next to the site.
- [Street water](https://myhomecheck.ai/learn/glossary/street-water/index.md) (街道水 · 虚水): Street water is the practice in urban water methods of treating streets and lanes as waterways, because flows of people and vehicles carry energy the way water does.
- [Dragon Entry](https://myhomecheck.ai/learn/glossary/dragon-entry/index.md) (龙入首): Dragon Entry is the last stretch of a dragon vein — a line of higher ground that carries energy — before it enters a site or house.
- [Dragon veins](https://myhomecheck.ai/learn/glossary/dragon-veins/index.md) (地脉): Dragon veins are lines that carry energy along ridges of higher ground — mountains, hills, mounds — like the veins of the earth.
- [Sha (surrounding landforms)](https://myhomecheck.ai/learn/glossary/sha-landforms/index.md) (砂): Sha are the mounds, hills or buildings around a site that shield it from wind and hold energy.
- [Bright hall](https://myhomecheck.ai/learn/glossary/bright-hall/index.md) (明堂): The bright hall is the open space in front of a house where energy gathers before entering the main door.
- [Contours](https://myhomecheck.ai/learn/glossary/contour-lines/index.md) (等高线): Contour lines join points of equal elevation on a terrain map.
- [Direct wind](https://myhomecheck.ai/learn/glossary/direct-wind/index.md) (直冲风): Direct wind is a strong current of air that blows straight at the main door or rushes right through a house.
- [Hide the wind, gather the qi](https://myhomecheck.ai/learn/glossary/hide-wind-gather-qi/index.md) (藏风聚气): "Hide the wind, gather the qi" — shelter from wind and energy is kept — is the root principle of feng shui.
- [Main door as qi intake](https://myhomecheck.ai/learn/glossary/main-door-qi-intake/index.md) (大门纳气): The main door as qi intake is the idea that the main door is the mouth of the home (the qi mouth), where outside energy comes in.
- [Door–kitchen–WC alignment](https://myhomecheck.ai/learn/glossary/door-kitchen-wc-alignment/index.md) (门灶厕对冲): Alignment is when the main door, the stove and a WC door sit on one straight axis, looking straight at each other.
- [Bed head](https://myhomecheck.ai/learn/glossary/bed-head/index.md) (床头): The bed head is where the pillow lies and the sleeper's head rests.
- [Altar sitting](https://myhomecheck.ai/learn/glossary/altar-sitting/index.md) (神台坐向): An altar's sitting is the side its back rests against, opposite the direction it faces.
- [Light well](https://myhomecheck.ai/learn/glossary/light-well/index.md) (天井): A light well is a vertical void open to the sky that brings light and air into the middle of a house.
- [Building coverage ratio](https://myhomecheck.ai/learn/glossary/building-coverage-ratio/index.md) (建筑密度): Building coverage ratio is the percentage of a plot covered by the building's footprint.
- [Setback](https://myhomecheck.ai/learn/glossary/setback/index.md) (建筑退界): The setback is the distance from the street boundary line (between road land and the plot) to the building line (which the house may not cross).

## The 24 Mountains (one page each)
- [The Zi 子 mountain](https://myhomecheck.ai/learn/24-mountains/ty/index.md): 352.5° – 7.5° · Kan 坎 · North · Water
- [The Gui 癸 mountain](https://myhomecheck.ai/learn/24-mountains/quy/index.md): 7.5° – 22.5° · Kan 坎 · North · Water
- [The Chou 丑 mountain](https://myhomecheck.ai/learn/24-mountains/suu/index.md): 22.5° – 37.5° · Gen 艮 · Northeast · Earth
- [The Gen 艮 mountain](https://myhomecheck.ai/learn/24-mountains/can-son/index.md): 37.5° – 52.5° · Gen 艮 · Northeast · Earth
- [The Yin 寅 mountain](https://myhomecheck.ai/learn/24-mountains/dan/index.md): 52.5° – 67.5° · Gen 艮 · Northeast · Wood
- [The Jia 甲 mountain](https://myhomecheck.ai/learn/24-mountains/giap/index.md): 67.5° – 82.5° · Zhen 震 · East · Wood
- [The Mao 卯 mountain](https://myhomecheck.ai/learn/24-mountains/mao/index.md): 82.5° – 97.5° · Zhen 震 · East · Wood
- [The Yi 乙 mountain](https://myhomecheck.ai/learn/24-mountains/at/index.md): 97.5° – 112.5° · Zhen 震 · East · Wood
- [The Chen 辰 mountain](https://myhomecheck.ai/learn/24-mountains/thin/index.md): 112.5° – 127.5° · Xun 巽 · Southeast · Earth
- [The Xun 巽 mountain](https://myhomecheck.ai/learn/24-mountains/ton/index.md): 127.5° – 142.5° · Xun 巽 · Southeast · Wood
- [The Si 巳 mountain](https://myhomecheck.ai/learn/24-mountains/ti/index.md): 142.5° – 157.5° · Xun 巽 · Southeast · Fire
- [The Bing 丙 mountain](https://myhomecheck.ai/learn/24-mountains/binh/index.md): 157.5° – 172.5° · Li 离 · South · Fire
- [The Wu 午 mountain](https://myhomecheck.ai/learn/24-mountains/ngo/index.md): 172.5° – 187.5° · Li 离 · South · Fire
- [The Ding 丁 mountain](https://myhomecheck.ai/learn/24-mountains/dinh/index.md): 187.5° – 202.5° · Li 离 · South · Fire
- [The Wei 未 mountain](https://myhomecheck.ai/learn/24-mountains/mui/index.md): 202.5° – 217.5° · Kun 坤 · Southwest · Earth
- [The Kun 坤 mountain](https://myhomecheck.ai/learn/24-mountains/khon/index.md): 217.5° – 232.5° · Kun 坤 · Southwest · Earth
- [The Shen 申 mountain](https://myhomecheck.ai/learn/24-mountains/than/index.md): 232.5° – 247.5° · Kun 坤 · Southwest · Metal
- [The Geng 庚 mountain](https://myhomecheck.ai/learn/24-mountains/canh/index.md): 247.5° – 262.5° · Dui 兑 · West · Metal
- [The You 酉 mountain](https://myhomecheck.ai/learn/24-mountains/dau/index.md): 262.5° – 277.5° · Dui 兑 · West · Metal
- [The Xin 辛 mountain](https://myhomecheck.ai/learn/24-mountains/tan/index.md): 277.5° – 292.5° · Dui 兑 · West · Metal
- [The Xu 戌 mountain](https://myhomecheck.ai/learn/24-mountains/tuat/index.md): 292.5° – 307.5° · Qian 乾 · Northwest · Earth
- [The Qian 乾 mountain](https://myhomecheck.ai/learn/24-mountains/can-tay-bac/index.md): 307.5° – 322.5° · Qian 乾 · Northwest · Metal
- [The Hai 亥 mountain](https://myhomecheck.ai/learn/24-mountains/hoi/index.md): 322.5° – 337.5° · Qian 乾 · Northwest · Water
- [The Ren 壬 mountain](https://myhomecheck.ai/learn/24-mountains/nham/index.md): 337.5° – 352.5° · Kan 坎 · North · Water

## Guides
- [How to measure your home's direction with a phone](https://myhomecheck.ai/learn/guides/measure-house-direction/index.md): Measure your home's facing direction with a phone: where to stand, how to hold it, how to avoid metal interference and why to record degrees, not names.
- [What setting polarity is and how to do it right](https://myhomecheck.ai/learn/guides/set-polarity-correctly/index.md): Set polarity on a floor plan correctly: find the true centre, enter the facing degree, check the main door, and avoid errors that skew every feng shui finding.
- [What to prepare before meeting an architect](https://myhomecheck.ai/learn/guides/before-meeting-an-architect/index.md): A checklist before your first architect meeting: land papers, measurements and facing degree, family needs, site photos and birth years — so the meeting leads to decisions.
- [How to read the 9-section feng shui analysis](https://myhomecheck.ai/learn/guides/read-the-9-part-reading/index.md): How to read Home Check's 9-section feng shui analysis: which sections first, what the levels mean, the three tiers of actions, read-aloud and PDF.
- [What the water mouth is and how to find it](https://myhomecheck.ai/learn/guides/find-the-water-mouth/index.md): The water mouth is where water leaves a site. How to find it at the grand, middle and small scales on a map: degree, mountain and confidence.
- [Fixing feng shui without demolition](https://myhomecheck.ai/learn/guides/fix-feng-shui-without-demolition/index.md): Gentle feng shui fixes: move and turn furniture, change the bed head, swap room uses, break door alignments — and when a re-layout is really needed.
- [Tube houses 4–5 m wide: a bright, airy layout](https://myhomecheck.ai/learn/guides/narrow-tube-house-layout/index.md): Laying out a 4–5 m tube house for light and air: stairs with a light well mid-house, compact bathrooms, a one-side corridor, rear ventilation — with codes.
- [Digitize a paper floor plan from a photo](https://myhomecheck.ai/learn/guides/digitize-a-paper-plan/index.md): Turn a paper, printed or scanned plan into a digital one: shoot it clearly, one photo per floor, confirm what the assistant reads, then set polarity.
- [LiDAR-scan a whole home into a floor plan](https://myhomecheck.ai/learn/guides/lidar-scan-a-whole-home/index.md): LiDAR-scan a whole home with a LiDAR iPhone or iPad: prepare the rooms, walk one loop the right way, check the 3D model, then go straight to the 2D plan.
- [Measure a home with a Bluetooth laser meter](https://myhomecheck.ai/learn/guides/measure-a-home-with-a-laser/index.md): Measure a home with a Bluetooth laser meter: activate and connect it, measure outer walls first, then details — each reading goes into the plan.

## Other languages
- [Tiếng Việt](https://myhomecheck.ai/vi/llms.txt)
- [中文](https://myhomecheck.ai/zh/llms.txt)

## Legal
- [Terms & Conditions](https://myhomecheck.ai/terms-conditions/)
- [Privacy Policy](https://myhomecheck.ai/privacy-policy/)

## Optional
- [Changelog](https://myhomecheck.ai/changelog)
- [Press](https://myhomecheck.ai/press)
- [About Home Check](https://myhomecheck.ai/about)
- [Security & privacy](https://myhomecheck.ai/trust)

Updated: 2026-10-25 · Content hash: sha256:c570756ad54416d039ad913c0bd6a55592cadeea49c5e0faf81f85bd6203cb2a