2019-07-01 Homebuilding & Renovating

200 homebuilding.co.uk

Your

build

costs

O

ne of the most important aspects when

planning your self-build or home

renovation/extension project is working

out how much it is going to cost. This figure

will depend on the size and shape of the

house, the level of your own involvement,

where in the country you intend to build,

and the materials you’re going to use. If you

can make even rough decisions about these

factors, then you can begin to work out how

much it is going to cost.

As a very general rule of thumb, expect

a building plot to cost between a third

and a half of the end value of the finished

house. The costs of building a house will

then depend on the variables listed above.

All building work is usually quoted on a

cost/m^2 basis. For example, a typical new

four bedroom self-built home is around

200m^2 (with 100m^2 on two storeys) and

usually varies between £1,000-£2,500/m^2

(although self-builders can achieve costs of

between £500-£3,500/m^2 +).

Renovation costs are more difficult to

establish as they involve many variables,

but allow at least £1,000-£1,500/m^2 for

work. This, added to the cost of the plot/

house and with a 10-30% contingency,

should result in less than the final end

value of the house. The table below, based

on information from the Building Cost

Information Service (part of the RICS, the

Royal Institution of Chartered Surveyors),

is updated monthly to help you work out a

more accurate estimate for your self-build.

Note, these figures are for build costs only

and do not account for VAT, which is not

charged for self-build projects.

There is a free online version at

http://www.homebuilding.co.uk/calculator.

Find out how much

your new home

might cost to build,

with our self-build

cost calculator

buildrouteA buildrouteb buildrouteC buildrouted

(diY + subbies) (Subbies) (builder/subbies) (Maincontractor)

Standard Good excellent Standard Good excellent Standard Good excellent Standard Good excellent

<90m^2

91-160m^2

161m^2 +

90-130m^2

131-220m^2

221m^2 +

twOstOrey

singlestOrey

1366 1580 1900 1446 1673 2012 1527 1766 2124 1607 1859 2236

1198 1386 1667 1268 1468 1765 1339 1549 1863 1409 1631 1961

1089 1262 1517 1153 1336 1606 1217 1410 1695 1281 1484 1784

1042 1206 1450 1103 1277 1535 1164 1348 1621 1226 1419 1706

1251 1518 1972 1324 1607 2088 1398 1697 2204 1471 1786 2320

1097 1331 1730 1162 1409 1831 1227 1487 1933 1291 1566 2035

998 1211 1575 1057 1283 1668 1116 1354 1760 1175 1425 1853

955 1158 1506 1011 1227 1594 1067 1295 1683 1124 1363 1771

1114 1461 1833 1179 1547 1940 1245 1633 2048 1310 1719 2156

977 1281 1607 1034 1356 1702 1092 1431 1797 1149 1507 1891

889 1165 1464 941 1234 1550 993 1302 1636 1045 1371 1722

849 1115 1399 899 1181 1481 949 1246 1563 999 1312 1645

1314 1521 1868 1392 1610 1978 1469 1700 2088 1546 1789 2198

1153 1333 1639 1221 1412 1735 1289 1490 1831 1357 1569 1928

1049 1214 1492 1110 1285 1580 1172 1357 1668 1234 1428 1755

1002 1161 1426 1061 1229 1510 1120 1298 1593 1179 1366 1677

1107 1340 1700 1172 1419 1800 1237 1498 1900 1302 1577 2000

971 1176 1491 1028 1245 1578 1086 1314 1666 1143 1384 1754

883 1070 1357 935 1133 1436 987 1196 1516 1039 1259 1596

845 1023 1297 895 1083 1373 945 1143 1449 994 1203 1526

1021 1308 1641 1082 1385 1738 1142 1462 1834 1202 1538 1931

897 1146 1441 949 1214 1525 1002 1281 1610 1055 1349 1695

815 1043 1310 863 1105 1387 911 1166 1465 959 1227 1542

780 997 1253 826 1056 1327 872 1114 1401 918 1173 1475

greaterlondon

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greaterlondon

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greaterlondon

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greaterlondon

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Mids,yorks,ne&wales

greaterlondon

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Mids,yorks,ne&wales

greaterlondon

south-east

nw,sw,east&scotland

Mids,yorks,ne&wales

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