Answer the questions below to receive an instant guide price for your project. No personal details are required to view your estimate. Prices shown are based on rates from 1 July 2026, are reviewed every three months, are for projects within a 25-mile radius of Worthing, and are subject to a site survey and formal quotation.
Build your estimate
Complete each step below. Pricing is kept hidden until you generate your estimate.
Step 1: Property Type
Step 2: Site Access
Step 3: Number of Bedrooms
3
1
7
Step 5: Extension Size
20m²
3m²
150m²
Step 4: Extension Type
Step 6: Specialist Features
Please select at least one Specialist Feature option, or choose None.
None
Kitchen
Utility Room
WC
Bathroom
Wet Room
Ensuite
Step 7: Finishes
Please select at least one Finish option, or choose None.
None
Wood Flooring
LVT Flooring
Lino Flooring
Carpet
Media Wall
Skirting and Architrave
Step 8: Glazing
Please enter at least one Glazing item, or choose None.
None
Windows
Skylights
French Doors
Single Back Door
Sliding Doors
Bifold Doors
Juliet Balcony
Please complete the highlighted missing question(s) before generating your estimate.
Estimated Cost Range:
£ â £
(Excluding VAT)
All estimates are intended as a guide only and subject to site survey and formal quotation.
Tell us about your project
Leave your details and DSH Construction can follow up with a formal quotation.
+44
AD - Andorra+376
AE - United Arab Emirates+971
AF - Afghanistan+93
AG - Antigua and Barbuda+1-268
AI - Anguilla+1-264
AL - Albania+355
AM - Armenia+374
AO - Angola+244
AQ - Antarctica+672
AR - Argentina+54
AS - American Samoa+1-684
AT - Austria+43
AU - Australia+61
AW - Aruba+297
AX - Aland Islands+358
AZ - Azerbaijan+994
BA - Bosnia and Herzegovina+387
BB - Barbados+1-246
BD - Bangladesh+880
BE - Belgium+32
BF - Burkina Faso+226
BG - Bulgaria+359
BH - Bahrain+973
BI - Burundi+257
BJ - Benin+229
BL - Saint Barthelemy+590
BM - Bermuda+1-441
BN - Brunei Darussalam+673
BO - Bolivia+591
BQ-BO - Bonaire, Saint Eustatius and Saba+599
BQ-SA - Bonaire, Saint Eustatius and Saba+599
BQ-SE - Bonaire, Saint Eustatius and Saba+599
BR - Brazil+55
BS - Bahamas+1-242
BT - Bhutan+975
BV - Bouvet Island+47
BW - Botswana+267
BY - Belarus+375
BZ - Belize+501
CA - Canada+1
CC - Cocos (Keeling) Islands+61
CD - Congo, The Democratic Republic of the+243
CF - Central African Republic+236
CG - Congo+242
CH - Switzerland+41
CI - Cote d'Ivoire+225
CK - Cook Islands+682
CL - Chile+56
CM - Cameroon+237
CN - China+86
CO - Colombia+57
CR - Costa Rica+506
CU - Cuba+53
CV - Cape Verde+238
CW - Curacao+599
CX - Christmas Island+61
CY - Cyprus+357
CZ - Czech Republic+420
DE - Germany+49
DJ - Djibouti+253
DK - Denmark+45
DM - Dominica+1-767
DO - Dominican Republic+1-809
DZ - Algeria+213
EC - Ecuador+593
EE - Estonia+372
EG - Egypt+20
EH - Western Sahara+212
ER - Eritrea+291
ES - Spain+34
ET - Ethiopia+251
FI - Finland+358
FJ - Fiji+679
FK - Falkland Islands (Malvinas)+500
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FO - Faroe Islands+298
FR - France+33
GA - Gabon+241
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GB-NIR - Northern Ireland+44
GB-SCT - Scotland+44
GB-UKM - United Kingdom+44
GB-WLS - Wales+44
GD - Grenada+1-473
GE - Georgia+995
GF - French Guiana+594
GG - Guernsey+44
GH - Ghana+233
GI - Gibraltar+350
GL - Greenland+299
GM - Gambia+220
GN - Guinea+224
GP - Guadeloupe+590
GQ - Equatorial Guinea+240
GR - Greece+30
GS - South Georgia and the South Sandwich Islands+500
GT - Guatemala+502
GU - Guam+1-671
GW - Guinea-Bissau+245
GY - Guyana+592
HK - Hong Kong+852
HM - Heard Island and McDonald Islands+672
HN - Honduras+504
HR - Croatia+385
HT - Haiti+509
HU - Hungary+36
ID - Indonesia+62
IE - Ireland+353
IL - Israel+972
IM - Isle of Man+44
IN - India+91
IO - British Indian Ocean Territory+246
IQ - Iraq+964
IR - Iran, Islamic Republic of+98
IS - Iceland+354
IT - Italy+39
JE - Jersey+44
JM - Jamaica+1-876
JO - Jordan+962
JP - Japan+81
KE - Kenya+254
KG - Kyrgyzstan+996
KH - Cambodia+855
KI - Kiribati+686
KM - Comoros+269
KN - Saint Kitts and Nevis+1-869
KP - Korea, Democratic People's Republic of+850
KR - Korea, Republic of+82
KW - Kuwait+965
KY - Cayman Islands+1-345
KZ - Kazakhstan+7
LA - Lao People's Democratic Republic+856
LB - Lebanon+961
LC - Saint Lucia+1-758
LI - Liechtenstein+423
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LR - Liberia+231
LS - Lesotho+266
LT - Lithuania+370
LU - Luxembourg+352
LV - Latvia+371
LY - Libya+218
MA - Morocco+212
MC - Monaco+377
MD - Moldova, Republic of+373
ME - Montenegro+382
MF - Saint Martin (French part)+590
MG - Madagascar+261
MH - Marshall Islands+692
MK - Macedonia, The Former Yugoslav Republic of+389
ML - Mali+223
MM - Myanmar+95
MN - Mongolia+976
MO - Macao+853
MP - Northern Mariana Islands+1-670
MQ - Martinique+596
MR - Mauritania+222
MS - Montserrat+1-664
MT - Malta+356
MU - Mauritius+230
MV - Maldives+960
MW - Malawi+265
MX - Mexico+52
MY - Malaysia+60
MZ - Mozambique+258
NA - Namibia+264
NC - New Caledonia+687
NE - Niger+227
NF - Norfolk Island+672
NG - Nigeria+234
NI - Nicaragua+505
NL - Netherlands+31
NO - Norway+47
NP - Nepal+977
NR - Nauru+674
NU - Niue+683
NZ - New Zealand+64
OM - Oman+968
PA - Panama+507
PE - Peru+51
PF - French Polynesia+689
PG - Papua New Guinea+675
PH - Philippines+63
PK - Pakistan+92
PL - Poland+48
PM - Saint Pierre and Miquelon+508
PN - Pitcairn+870
PR - Puerto Rico+1-787
PS - Palestine+970
PT - Portugal+351
PW - Palau+680
PY - Paraguay+595
QA - Qatar+974
RE - Reunion+262
RO - Romania+40
RS - Serbia+381
RU - Russian Federation+7
RW - Rwanda+250
SA - Saudi Arabia+966
SB - Solomon Islands+677
SC - Seychelles+248
SD - Sudan+249
SE - Sweden+46
SG - Singapore+65
SH - Saint Helena, Ascension and Tristan da Cunha+290
SI - Slovenia+386
SJ - Svalbard and Jan Mayen+47
SK - Slovakia+421
SL - Sierra Leone+232
SM - San Marino+378
SN - Senegal+221
SO - Somalia+252
SR - Suriname+597
SS - South Sudan+211
ST - Sao Tome and Principe+239
SV - El Salvador+503
SX - Sint Maarten (Dutch part)+1-721
SY - Syrian Arab Republic+963
SZ - Swaziland+268
TC - Turks and Caicos Islands+1-649
TD - Chad+235
TF - French Southern Territories+262
TG - Togo+228
TH - Thailand+66
TJ - Tajikistan+992
TK - Tokelau+690
TL - Timor-Leste+670
TM - Turkmenistan+993
TN - Tunisia+216
TO - Tonga+676
TR - Turkey+90
TT - Trinidad and Tobago+1-868
TV - Tuvalu+688
TW - Taiwan+886
TZ - Tanzania, United Republic of+255
UA - Ukraine+380
UG - Uganda+256
UM - United States Minor Outlying Islands+1
US - United States+1
UY - Uruguay+598
UZ - Uzbekistan+998
VA - Holy See (Vatican City State)+379
VC - Saint Vincent and the Grenadines+1-784
VE - Venezuela, Bolivarian Republic of+58
VG - Virgin Islands, British+1-284
VI - Virgin Islands, U.S.+1-340
VN - Vietnam+84
VU - Vanuatu+678
WF - Wallis and Futuna+681
WS - Samoa+685
YE - Yemen+967
YT - Mayotte+262
ZA - South Africa+27
ZM - Zambia+260
ZW - Zimbabwe+263
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