---
title: "Egyptian Hieroglyph O1: House plan | Kemet Vault"
description: "Learn O1 (House plan) in Egyptian hieroglyphs: logogram, pr (‘house’, ‘estate’ or ‘domain’), Unicode U+13250. Sign reading and verified sources."
url: "https://kemetvault.com/egyptian-hieroglyph-o1-house-pr/"
date_published: "2026-11-03T14:48:00+00:00"
date_modified: "2026-11-03T14:48:00+00:00"
---

# Egyptian Hieroglyph O1: House plan | Kemet Vault

KEMET VAULT / HIEROGLYPH REFERENCE / SOURCE-REVIEWED SIGN

Gardiner O1 depicts the plan of an enclosed building and is encoded as U+13250. The Unicode character record classifies the sign as a logogram for pr, meaning a house or domain. It is an instructive contrast to familiar one-consonant phonograms: one recognizable plan can stand for a complete Egyptian word rather than one sound alone.

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**House plan · O1**The house plan that can write pr

Copy authentic Unicode sign

## At-a-glance sign record

| Gardiner catalogue | O1 |
| --- | --- |
| Unicode | `U+13250` |
| Sign family | O · Buildings and structures |
| Common function | Logogram |
| Conventional value | pr (‘house’, ‘estate’ or ‘domain’) |

## Recognising the sign: shape and variants

The compact rectangular outline evokes an architectural plan rather than a perspective view of a modern house. Egyptian writing drew from familiar objects but used conventional forms. An encoded sign is a stable reference for digital text; in actual stone relief or ink manuscripts, proportion and orientation could vary. Do not mistake similar rectangular enclosures for the same sign without considering other marks and the wider inscription.

## How the sign works in Egyptian writing

As a logogram O1 can write pr, a word associated with a house, domain or estate. It is not the English letter P and not a blanket translation for every building shown in Egyptian art. Words and compound expressions can extend the sense of pr. The famous Egyptian designation pr-ꜥꜣ, conventionally ‘great house’, later became associated with the ruler in the development of the word pharaoh. That development belongs to historical vocabulary and context; the isolated O1 sign does not by itself name a king.

## A reading exercise, with its limits

Reading exercise: identify O1 as the house-plan logogram and record the transliteration pr before attempting an English gloss. Compare that with how the owl G17 contributes only m and how the mouth D21 contributes r. Do not construct an English sentence by substituting ‘house’ every time you encounter the rectangular sign; check whether pr is part of a larger expression and what other signs accompany it.

## Compare it with other genuine signs

Compare O1 with O1A, which Unicode lists separately and connects to the expression pr-ꜥnḫ, the ‘house of life’. The two are visually and conceptually related but not interchangeable codepoints. Another useful comparison is between O1 and N5, the sun disk: both may be used as logograms, although their semantic fields are architectural and solar respectively. The distinction explains why the standard Gardiner code is indispensable for research.

## What this sign cannot tell us

The meaning of pr is broader than the modern English idea of a private home. An elite estate, administrative establishment or an institutional ‘house’ requires contextual translation. A Unicode symbol also provides no proof of where a particular inscription was carved or who owned the structure it mentions.

## A common question about O1

**What does the O1 house hieroglyph stand for?**

Its standard logographic value is pr, commonly ‘house’ or ‘domain’. Longer expressions and archaeological context determine the appropriate translation.

## Verified references and further reading

This dossier uses the official Unicode sign identification and academic explanations of Egyptian writing. It is an educational sign-level reference, not a claim to decipher a specific unexamined monument or recover a lost pronunciation.

- [Unicode Consortium, Egyptian Hieroglyphs character names and standard values (including O1)](https://www.unicode.org/Public/18.0.0/charts/nameslist/13000/)
- [UCL Digital Egypt, The System of Egyptian Hieroglyphic Writing](https://www.ucl.ac.uk/museums-static/digitalegypt/writing/system.html)
- [UCL Digital Egypt, a worked introduction to phonograms and meaning signs](https://www.ucl.ac.uk/museums-static/digitalegypt/writing/system1.html)
- [UCL Digital Egypt, Egyptian sound-sign reference](https://www.ucl.ac.uk/museums-static/digitalegypt/writing/sounds.html)

Browse the [original 136-sign Hieroglyphic Explorer](https://kemetvault.com/hieroglyphic-explorer/) or read the [source-based study of Egyptian scribes and scripts](https://kemetvault.com/ancient-egyptian-scribes-hieroglyphs-hieratic-writing-schools/) for wider historical context. The explorer is an index; individual profiles provide dedicated research guidance for the six reviewed signs.

**Evidence review:** 3 November 2026. Unicode identity and proposed standard sign value checked; actual inscriptions can have contextual or orthographic variation.