How big is the typical condo in Singapore?

A typical condo has 52 homes. But a typical home is in a condo of 429. Pick a condo to see where it sits among 2,532 condos and executive condominiums, from URA's count of homes.

My condo

Type a condo's name, or tap an example. 2,532 condos and executive condominiums.

Condo name

429homes

Palm Isles · Condo · 6 blocks

About 8 times the typical condo (52 homes).

Bigger than 89 in every 100 condos50 in every 100 condo homes live in a condo this size or bigger

How many condos are each size?

Each bar is a share of all 2,532 condos. Your condo's row is outlined. Hover or tap a row for the numbers.

Under 50 homes

48 in every 100 condos (1,228 condos)

50 to 99 homes

17 in every 100 condos (431 condos)

100 to 299 homes

18 in every 100 condos (457 condos)

300 to 499 homesYour condo: Palm Isles

8 in every 100 condos (196 condos)

500 to 999 homes

8 in every 100 condos (196 condos)

1,000 homes or more

1 in every 100 condos (24 condos)

Share of all condos

Most condos are small: 66 in every 100 have under 100 homes, and only 9 in every 100 have 500 or more.

How big is your condo?

Its homes against the typical condo, a typical home's condo, and the biggest condo.

A typical condo is small. But big condos hold so many homes that a typical home is in a bigger one.

Palm Isles429

The typical condo52

A typical home's condo429

Biggest condo: Treasure at Tampines2,203

Bigger than 89 in every 100 condos, and 50 in every 100 condo homes live in a condo this size or bigger.

Which condos have 1,000 or more homes?

24 of 2,532. Each bar is the condo's homes. The dashed line is 429 homes, the size of a typical home's condo. Hover or tap a row for details, and click to pick it.

Show the other 14

Homes in the condo429 homes: a typical home's condo

Palm Isles has 429 homes, so it is not one of the 24 with 1,000 or more. The smallest of them has 1,006.

How many homes are in each block?

URA lists homes by address entry, which we call a block. A tall tower can be a single entry. Block counts are the least checked number on this page.

Palm Isles72

The typical condo38

The most in one entry: One Pearl Bank774

Palm Isles is listed under 6 address entries (blocks): about 72 homes in each. That is more than the typical 38 homes per block.

Fun finds

How many small condos does it take to match one giant?

The 304 smallest condos

Added together, the 304 smallest condos have fewer homes than Treasure at Tampines on its own (2,203).

Which is bigger: the 24 biggest condos, or the 1,228 smallest?

The 24 biggest hold more homes

The 24 condos with 1,000 or more homes hold 30,717 homes. The 1,228 condos with under 50 homes hold 27,662 between them.

How does Treasure at Tampines compare with the typical condo?

About 42 times as many homes

Treasure at Tampines has 2,203 homes in 29 blocks. The typical condo has 52.

The short version

Of the 2,532 condos and executive condominiums in URA's count of homes, the typical (middle) one has 52 homes. But line up every one of the 372,217 condo homes from the smallest condo to the biggest, and the home in the middle is in a condo of 429. 220 condos with 500 or more homes are 9 in every 100 condos and hold 42 in every 100 condo homes. The biggest, Treasure at Tampines, has 2,203.

What we did. We took URA's count of homes ("dwelling units") from data.gov.sg: 83,541 rows, one for each address entry. We kept the rows for condos and apartments and for executive condominiums, left out landed homes and rows with no project name, and added up the homes for each project name. That gives 2,532 condos with 372,217 homes. We sorted them into six sizes and found two typical sizes: the typical condo, and the condo a typical home is in.

What we found. The typical condo is small (52 homes) and 48 in every 100 condos have under 50 homes. But condos of 300 or more homes hold 63 in every 100 condo homes, and the 220 with 500 or more hold 42 in every 100 condo homes. 24 condos have 1,000 or more homes; Treasure at Tampines is the biggest with 2,203.

What to keep in mind. This counts homes in URA's file, not land area, tower height, prices or how good a condo is to live in. 13 joined names (7,386 homes) and condo rows with no name (5,837 homes) are left out. Block counts are the least checked number here.

By Ben (opens in a new tab). Updated 11 Oct 2026. Data: URA, No of Dwelling Units, via data.gov.sg, rows updated March 2025 and February 2026.

Questions people ask

What is the biggest condo in Singapore by number of homes?

Treasure at Tampines, with 2,203 homes in 29 blocks, in URA's count. Next come Normanton Park (1,840) and D'Leedon (1,703). This counts homes, not land area, height or how many people live there.

How many condos in Singapore have 1,000 or more homes?

24 of the 2,532 condos and executive condominiums in URA's file, including 1 executive condominium (Sol Acres). Together they hold 8 in every 100 condo homes.

How many homes does a typical condo in Singapore have?

The typical condo, with as many condos smaller as bigger, has 52 homes, and 48 in every 100 condos have fewer than 50. But a typical home, counting every condo home from the smallest condo to the biggest, is in a condo of 429 homes.

Why are the two answers so different?

Big condos hold many homes each. 220 condos with 500 or more homes are 9 in every 100 condos, yet they hold 42 in every 100 condo homes. The 1,228 condos with under 50 homes are 48 in every 100 condos but hold 7 in every 100 homes.

How many condo homes are there in Singapore?

URA's file adds up to 372,217 homes in 2,532 named condos and executive condominiums. That is the file's count of dwelling units under the names we could use, not an official count of every condo home. 5,837 homes sit in condo rows with no project name, and 7,386 in 13 joined names, so they are not counted.

Are executive condominiums (ECs) included?

Yes, and they are tagged EC. 75 of the 2,532 are ECs. Sol Acres, with 1,327 homes, is the biggest EC and is on the list of 1,000 or more.

Does this include landed homes or HUDC estates?

No. URA's file has 73,041 rows for landed homes, which we left out. HDB flats are not in this file at all.

How many blocks does the biggest condo have?

Treasure at Tampines is listed under 29 address entries, which we call blocks. 1,542 of the 2,532 condos are listed under a single entry. Block counts are the least checked number on this page: we compared one condo, Treasure at Tampines, with a published figure.

Why are some well-known condos missing?

13 names in the file join two or more neighbouring condos with a slash, for example The Palette/D'Nest (1,804 homes together). We cannot split their homes, so they are left out and listed in the numbers below. Rows with no project name are left out too.

How up to date is this?

The rows in URA's file were last updated in March 2025 (81,132 rows) and February 2026 (2,409 rows). A condo finished or sold out after that may be missing or out of date.

Does a bigger condo mean a bigger site, or a better place to live?

No. This page counts homes only. It says nothing about land area, tower height, facilities, prices or whether a condo is good to live in.

The numbers behind it

Condos by size: how many condos, and how many condo homes
Size	Condos	Share of condos	Condo homes	Share of condo homes
Under 50 homes	1,228	48.5%	27,662	7.4%
50 to 99 homes	431	17.0%	29,879	8.0%
100 to 299 homes	457	18.0%	79,764	21.4%
300 to 499 homes	196	7.7%	77,651	20.9%
500 to 999 homes	196	7.7%	126,544	34.0%
1,000 homes or more	24	0.9%	30,717	8.3%
All	2,532	100%	372,217	100%

The two typical sizes
Measure	Number	How it is worked out
Condos in the count	2,532	Named Non-Landed and EC projects, one entry per project name
Condo homes in the count	372,217	The sum of dwelling units (DU) over those projects
The typical condo	52 homes	Line up the condos by size: as many are smaller as bigger
A typical home's condo	429 homes	Line up every home from the smallest condo to the biggest: the home in the middle is in a condo of this size
Condos with 500 or more homes	220 (9 in every 100) with 42 in every 100 homes	From the size bands above
Condo homes in a condo of 300 or more	63 in every 100	234,912 homes in 416 condos

The 24 condos with 1,000 or more homes
Rank	Condo	Type	Homes	Blocks	Homes per block	Times the typical condo
1	Treasure at Tampines	Condo	2,203	29	76	42
2	Normanton Park	Condo	1,840	9	204	35
3	D'Leedon	Condo	1,703	7	243	33
4	Riverfront Residences	Condo	1,451	9	161	28
5	Parc Clematis	Condo	1,450	9	161	28
6	The Florence Residences	Condo	1,410	9	157	27
7	Parc Esta	Condo	1,399	9	155	27
8	High Park Residences	Condo	1,376	6	229	26
9	Sol Acres	Executive condominium	1,327	13	102	26
10	Stirling Residences	Condo	1,259	3	420	24
11	Melville Park	Condo	1,232	7	176	24
12	Jadescape	Condo	1,206	7	172	23
13	Kingsford Waterbay	Condo	1,157	9	129	22
14	The Minton	Condo	1,145	18	64	22
15	Reflections at Keppel Bay	Condo	1,129	17	66	22
16	The Sail @ Marina Bay	Condo	1,111	2	556	21
17	Bayshore Park	Condo	1,083	7	155	21
18	Avenue South Residence	Condo	1,074	7	153	21
19	Marina One Residences	Condo	1,042	2	521	20
20	The Interlace	Condo	1,040	23	45	20
21	The Bayshore	Condo	1,038	7	148	20
22	Sims Urban Oasis	Condo	1,024	8	128	20
23	Affinity at Serangoon	Condo	1,012	7	145	19
24	Mandarin Gardens	Condo	1,006	4	252	19

Show all 220 condos with 500 or more homes

All 220 condos with 500 or more homes
Rank	Condo	Type	Homes	Blocks
1	Treasure at Tampines	Condo	2,203	29
2	Normanton Park	Condo	1,840	9
3	D'Leedon	Condo	1,703	7
4	Riverfront Residences	Condo	1,451	9
5	Parc Clematis	Condo	1,450	9
6	The Florence Residences	Condo	1,410	9
7	Parc Esta	Condo	1,399	9
8	High Park Residences	Condo	1,376	6
9	Sol Acres	Executive condominium	1,327	13
10	Stirling Residences	Condo	1,259	3
11	Melville Park	Condo	1,232	7
12	Jadescape	Condo	1,206	7
13	Kingsford Waterbay	Condo	1,157	9
14	The Minton	Condo	1,145	18
15	Reflections at Keppel Bay	Condo	1,129	17
16	The Sail @ Marina Bay	Condo	1,111	2
17	Bayshore Park	Condo	1,083	7
18	Avenue South Residence	Condo	1,074	7
19	Marina One Residences	Condo	1,042	2
20	The Interlace	Condo	1,040	23
21	The Bayshore	Condo	1,038	7
22	Sims Urban Oasis	Condo	1,024	8
23	Affinity at Serangoon	Condo	1,012	7
24	Mandarin Gardens	Condo	1,006	4
25	Watertown	Condo	992	11
26	Caribbean at Keppel Bay	Condo	969	22
27	Parc Oasis	Condo	950	10
28	Signature Park	Condo	928	10
29	North Park Residences	Condo	920	12
30	Riversails	Condo	920	12
31	Braddell View	Condo	918	16
32	City Square Residences	Condo	910	6
33	Costa Del Sol	Condo	906	7
34	A Treasure Trove	Condo	882	14
35	Bartley Ridge	Condo	868	9
36	The Tapestry	Condo	861	7
37	The Lakeshore	Condo	848	3
38	Commonwealth Towers	Condo	845	2
39	Eight Riversuites	Condo	843	4
40	Seaside Residences	Condo	841	4
41	Piermont Grand	Executive condominium	820	13
42	La Fiesta	Condo	810	13
43	Park Colonial	Condo	805	6
44	Botanique at Bartley	Condo	797	9
45	Kovan Melody	Condo	778	12
46	The Anchorage	Condo	775	9
47	One Pearl Bank	Condo	774	1
48	Northvale	Condo	762	7
49	The Gardens at Bishan	Condo	756	4
50	The Trilinq	Condo	755	3
51	The Floravale	Executive condominium	754	16
52	Parc Riviera	Condo	752	2
53	Neptune Court	Condo	751	9
54	The Terrace	Executive condominium	747	12
55	J Gateway	Condo	738	2
56	Costa Rhu	Condo	737	4
57	Queens Peak	Condo	736	2
58	Parc Botannia	Condo	735	4
59	The Poiz Residences	Condo	731	6
60	The Tre Ver	Condo	729	9
61	Twin Waterfalls	Executive condominium	728	12
62	Valley Park	Condo	728	5
63	The Glades	Condo	726	9
64	Livia	Condo	724	10
65	Queens	Condo	722	3
66	Aquarius by the Park	Condo	720	10
67	Grandeur Park Residences	Condo	720	6
68	Northoaks	Executive condominium	720	6
69	Rio Vista	Condo	716	11
70	Whistler Grand	Condo	716	2
71	Eco	Condo	714	8
72	Caspian	Condo	712	6
73	Yew Mei Green	Executive condominium	712	3
74	Lake Grande	Condo	710	4
75	Bartley Residences	Condo	702	8
76	Parc Central Residences	Executive condominium	700	11
77	The Topiary	Executive condominium	700	8
78	The Warren	Condo	699	11
79	The Panorama	Condo	698	6
80	Euhabitat	Condo	697	23
81	Maple Woods	Condo	697	5
82	Hazel Park Condominium	Condo	696	6
83	Lakeville	Condo	696	6
84	Waterview	Condo	696	12
85	Woodsvale	Executive condominium	696	9
86	Palm Gardens	Condo	694	4
87	Sky Vue	Condo	694	2
88	Parc Rosewood	Condo	689	15
89	Dover Parkview	Condo	686	4
90	Prive	Executive condominium	680	4
91	Sengkang Grand Residences	Condo	680	9
92	Ripple Bay	Condo	679	7
93	The Rivervale	Executive condominium	671	3
94	The Tampines Trilliant	Executive condominium	670	12
95	The Woodleigh Residences	Condo	667	11
96	1 Canberra	Executive condominium	665	13
97	Castle Green	Condo	664	4
98	Principal Garden	Condo	663	4
99	Duo Residences	Condo	660	1
100	Ki Residences at Brookvale	Condo	660	10
101	Pine Grove	Condo	660	14
102	Symphony Suites	Condo	660	11
103	The Parc Condominium	Condo	659	7
104	Guilin View	Condo	655	5
105	Eight Courtyards	Condo	654	12
106	Ivory Heights	Condo	654	8
107	Forestville	Executive condominium	653	14
108	Bellewaters	Executive condominium	651	10
109	Savannah Condopark	Condo	648	18
110	Double Bay Residences	Condo	646	14
111	Eastpoint Green	Condo	646	3
112	Icon	Condo	646	1
113	Regent Heights	Condo	645	3
114	Clavon	Condo	640	2
115	Copen Grand	Executive condominium	639	12
116	Leedon Green	Condo	638	7
117	Parc Vista	Condo	638	7
118	Tembusu Grand	Condo	638	4
119	The Brownstone	Executive condominium	638	8
120	Maysprings	Condo	636	2
121	Forett@Bukit Timah	Condo	633	13
122	The Visionaire	Executive condominium	632	16
123	Q Bay Residences	Condo	630	8
124	The Lakefront Residences	Condo	629	3
125	Parc Life	Executive condominium	628	11
126	Rivercove Residences	Executive condominium	628	10
127	The Alps Residences	Condo	626	9
128	The Quartz	Condo	625	10
129	The Luxurie	Condo	622	10
130	Heritage View	Condo	618	3
131	Parc Centros	Condo	618	8
132	Tenet	Executive condominium	618	11
133	Blue Horizon	Condo	616	5
134	Clover by the Park	Condo	616	2
135	Jewel @ Buangkok	Condo	616	6
136	North Gaia	Executive condominium	616	11
137	Waterbank at Dakota	Condo	616	8
138	Orchid Park Condominium	Condo	615	8
139	The Garden Residences	Condo	613	5
140	Cote D'Azur	Condo	612	5
141	River Isles	Condo	610	9
142	The Centris	Condo	610	12
143	The Estuary	Condo	608	7
144	Aspen Heights	Condo	606	2
145	Lentor Modern	Condo	605	3
146	Pandan Valley	Condo	605	7
147	Blossom Residences	Executive condominium	602	3
148	Simei Green Condominium	Executive condominium	602	7
149	Citylights	Condo	600	5
150	Changi Rise Condominium	Condo	598	11
151	The Santorini	Condo	597	8
152	Cashew Heights Condominium	Condo	596	10
153	Amber Park	Condo	592	3
154	Riversound Residence	Condo	590	6
155	Trevista	Condo	590	3
156	Bedok Residences	Condo	583	8
157	Urban Vista	Condo	582	11
158	Regentville	Condo	580	5
159	Grandeur 8	Condo	579	8
160	Gem Residences	Condo	578	2
161	Arc at Tampines	Executive condominium	574	10
162	Esparina Residences	Executive condominium	573	9
163	Hillview Regency	Condo	572	2
164	Penrose	Condo	566	5
165	Midwood	Condo	564	2
166	One Amber	Condo	562	4
167	Bellewoods	Executive condominium	561	12
168	Midtown Modern	Condo	558	2
169	Casa Merah	Condo	556	12
170	Riverbank @ Fernvale	Condo	555	4
171	Archipelago	Condo	553	18
172	Regent Grove	Condo	553	3
173	Ola	Executive condominium	548	9
174	Hillion Residences	Condo	546	3
175	Lake Life	Executive condominium	546	5
176	The Sea View	Condo	546	6
177	Rivergate	Condo	545	3
178	Austville Residences	Executive condominium	540	6
179	Irwell Hill Residences	Condo	540	2
180	The Tropica	Condo	537	7
181	Compass Heights	Condo	536	2
182	The Cascadia	Condo	536	13
183	Wandervale	Executive condominium	534	9
184	Parkview Apartments	Condo	532	3
185	Hundred Palms Residences	Executive condominium	531	9
186	Flo Residence	Condo	530	7
187	Varsity Park Condominium	Condo	530	27
188	Carissa Park Condominium	Condo	528	3
189	The Hillier	Condo	528	2
190	Signature at Yishun	Executive condominium	525	11
191	Sanctuary Green	Condo	522	5
192	Simsville	Condo	522	4
193	The M	Condo	522	4
194	H2o Residences	Condo	521	5
195	Kovan Residences	Condo	521	8
196	Twin Vew	Condo	520	2
197	Forest Woods	Condo	519	7
198	Edelweiss Park Condominium	Condo	517	12
199	Parc Palais	Condo	517	6
200	The Vales	Executive condominium	517	9
201	Laguna Park	Condo	516	7
202	Le Quest	Condo	516	5
203	Citylife@Tampines	Executive condominium	514	9
204	Ecopolitan	Executive condominium	512	8
205	Kingsford . Hillview Peak	Condo	512	3
206	Pebble Bay	Condo	510	4
207	V on Shenton	Condo	510	1
208	River Place	Condo	509	4
209	Sky Habitat	Condo	509	2
210	Echelon	Condo	508	2
211	Skypark Residences	Executive condominium	506	9
212	The Clement Canopy	Condo	505	2
213	The Criterion	Executive condominium	505	10
214	Riverparc Residence	Executive condominium	504	7
215	The Makena	Condo	504	3
216	Treasure Crest	Executive condominium	504	8
217	The Waterside	Condo	502	6
218	Hedges Park Condominium	Condo	501	10
219	Chiltern Park	Condo	500	3
220	Highline Residences	Condo	500	7

The 13 joined names left out (two or more condos under one name)
Name in URA's file	Homes together	Blocks together
The Palette/D'Nest	1,804	24
NV Residences/Coco Palms	1,586	20
Waterfront Gold/Waterfront Isle	922	9
Waterfront Waves/Waterfront Key	842	9
One Holland Village Residences/Quincy House Singapore	551	3
Riviere/Fraser Residence River Promenade	527	3
Southaven I/Southaven II	497	7
Wing Fong Mansions/Wing Fong Court	218	2
Fernwood Terraces/Fernwood Towers	215	4
Crescendo Building/Crescendo Park	87	11
The Springside/The Brooks I/The Brooks II	61	2
Mandalay Towers/Mandalay Court	56	2
Tanglin Hill Villas/Tanglin Hill Meadows	20	1

The boring bit

Where the data comes from

URA's "No of Dwelling Units" file on data.gov.sg: 83,541 rows, one for each address entry, with the project name, a property type (Landed, Non-Landed or EC), the number of dwelling units (DU, which we call homes) and the date the row was updated. Downloaded 11 Oct 2026.

What is not claimed

Homes are not people. We do not know how many people live in a condo.
Homes are not size. A condo with more homes is not necessarily on bigger land, taller or better.
The counts are URA's dwelling units under the names in the file. A developer's own figure can differ by a few homes (for Normanton Park, the file has 1,840).
Block counts are address entries in the file. A condo can be one entry or many, and we compared only one condo, Treasure at Tampines (29 blocks), with a published figure.
The size bands (under 50, 50 to 99, 100 to 299, 300 to 499, 500 to 999, 1,000 or more) are our choice.
We do not rank condos as good or bad, and we do not say why some are bigger.

Coverage

The file has 83,541 rows: 73,041 landed (left out), 9,897 Non-Landed (condos and apartments) and 603 EC. Of the 10,500 Non-Landed and EC rows, 3,245 have no project name (5,837 homes, 1.5% of the condo homes in the file) and 97 belong to the 13 joined names (7,386 homes). The other 7,158 rows make up the 2,532 condos and 372,217 homes on this page. 75 of the 2,532 are executive condominiums.

The rows were last updated in March 2025 (81,132) and February 2026 (2,409). The data.gov.sg description of the file names an earlier period, so treat the counts as current to about 2025.

Report an error. Corrections are logged publicly with a date.

How we did it

Adding upMediansSize bandsShares of 100%

Downloaded the file from data.gov.sg on 11 Oct 2026.
Kept Non-Landed and EC rows with a project name; left out landed rows and unnamed rows.
Added up the homes (DU) for each project name and counted its rows as blocks.
Left out the 13 names that join condos with a slash, because their homes cannot be split.
Found the two typical sizes: the median condo size, and the size of the condo that holds the middle home when homes are lined up from the smallest condo to the biggest.
Drew the two bars: each size's exact share of condos, and of condo homes, as a slice of 100%. The pin is where the condo you picked sits when condos (or homes) are lined up from the smallest.
Compared two condos with published figures: Treasure at Tampines (2,203) and D'Leedon (1,703) match.

Show the Python code

KEEP = ("Non-Landed", "EC")          # condos and apartments (URA "Non-Landed") plus executive condominiums
BANDS = [                              # (key, lowest, highest, plain label)
    ("b1", 1, 49, "Under 50 homes"),
    ("b2", 50, 99, "50 to 99 homes"),
    ("b3", 100, 299, "100 to 299 homes"),
    ("b4", 300, 499, "300 to 499 homes"),
    ("b5", 500, 999, "500 to 999 homes"),
    ("b6", 1000, 10**9, "1,000 homes or more"),
]

def r0(x):
    """Round half up, the way the site always does."""
    return int(x + 0.5)

def aggregate(rows):
    """One entry per project name: homes (sum of DU) and address entries ("blocks").
    Landed rows and rows with no name are left out. A name with a slash joins two or more neighbouring condos
    (for example "THE PALETTE/D'NEST"); we cannot split their homes, so they are returned separately and not counted."""
    proj = {}
    for p in rows:
        if p["PROP_TYPE"] not in KEEP:
            continue
        name = (p["PROJ_NAME"] or "").strip().upper()
        if not name:
            continue
        e = proj.setdefault(name, {"homes": 0, "blocks": 0, "ec": False})
        e["homes"] += p["DU"] or 0
        e["blocks"] += 1
        if p["PROP_TYPE"] == "EC":
            e["ec"] = True
    proj = {k: v for k, v in proj.items() if v["homes"] > 0}
    joined = {k: v for k, v in proj.items() if "/" in k}
    return {k: v for k, v in proj.items() if "/" not in k}, joined

def band_of(homes):
    for key, lo, hi, _ in BANDS:
        if lo <= homes <= hi:
            return key

def summarise(proj):
    sizes = sorted(v["homes"] for v in proj.values())
    n, total = len(sizes), sum(sizes)
    median = statistics.median(sizes)
    # line every home up from the smallest condo to the biggest: the home in the middle lives in a condo of this size
    run = 0
    for s in sizes:
        run += s
        if run * 2 >= total:
            middle_home_size = s
            break
    bands = []
    for key, lo, hi, label in BANDS:
        ps = [s for s in sizes if lo <= s <= hi]
        bands.append({"key": key, "lo": lo, "hi": hi, "label": label, "projects": len(ps), "homes": sum(ps)})
    return {"n": n, "total": total, "median": median, "middle_home_size": middle_home_size, "bands": bands}

What could make it wrong: a condo whose rows carry two names, a new condo missing from the file, homes recorded under another name, or a row with the wrong property type. We did not use machine learning: adding up and sorting answer the question directly.

Source: URA, No of Dwelling Units, on data.gov.sg (opens in a new tab). Contains information from this dataset accessed on 11 Oct 2026, made available under the terms of the Singapore Open Data Licence version 1.0 (opens in a new tab).