General Contractors Email List in Japan

SphereScout lists 199,000+ general contractors in Japan (October 2026 snapshot). Of these, 16,000+ (8.3%) have an email address, 172,000+ (86.3%) have a phone number, 81,000+ (40.8%) have a website, and 9,000+ (4.5%) have a mobile number. Includes general contractors, home builders, and construction companies.

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Last update: October 2026File type: CSV/Excel

How many general contractors are there in Japan?

Source: SphereScout Data Lab, snapshot of October 27, 2026. About this data

SphereScout indexes 199,000+ public business listings categorized as General Contractors in Japan. 16,000+ businesses (8.3%) have at least one email address; 172,000+ (86.3%) have at least one phone number. 9,000+ (4.5%) have a mobile number.

Where these listings are concentrated

Tokyo To13,000+6.9% of this dataset
Osaka Fu11,000+5.9% of this dataset
Aichi Ken10,000+5.3% of this dataset
Kanagawa Ken10,000+5.1% of this dataset
Hokkaido10,000+5.1% of this dataset
Saitama Ken9,500+4.8% of this dataset
Fukuoka Ken8,500+4.5% of this dataset
Chiba Ken8,000+4.1% of this dataset

Show all 47 regions

Hyogo Ken7,000+ (3.7%)
Ibaraki Ken5,500+ (2.9%)
Shizuoka Ken4,500+ (2.4%)
Hiroshima Ken4,500+ (2.3%)
Miyagi Ken4,500+ (2.3%)
Niigata Ken4,500+ (2.3%)
Nagano Ken4,000+ (2.1%)
Fukushima Ken4,000+ (2%)
Gifu Ken3,500+ (1.9%)
Kyoto Fu3,500+ (1.9%)
Kumamoto Ken3,000+ (1.7%)
Tochigi Ken3,000+ (1.7%)
Mie Ken3,000+ (1.6%)
Kagoshima Ken3,000+ (1.6%)
Okayama Ken3,000+ (1.6%)
Gumma Ken3,000+ (1.5%)
Okinawa Ken2,500+ (1.4%)
Aomori Ken2,500+ (1.3%)
Iwate Ken2,500+ (1.3%)
Ehime Ken2,500+ (1.3%)
Yamaguchi Ken2,500+ (1.3%)
Ishikawa Ken2,000+ (1.2%)
Nagasaki Ken2,000+ (1.2%)
Yamagata Ken2,000+ (1.2%)
Shiga Ken2,000+ (1.2%)
Oita Ken2,000+ (1.1%)
Miyazaki Ken2,000+ (1%)
Toyama Ken1,500+ (1%)
Akita Ken1,500+ (1%)
Wakayama Ken1,500+ (0.9%)
Kagawa Ken1,500+ (0.9%)
Fukui Ken1,500+ (0.9%)
Yamanashi Ken1,500+ (0.9%)
Tokushima Ken1,500+ (0.8%)
Nara Ken1,500+ (0.8%)
Saga Ken1,500+ (0.8%)
Kochi Ken1,500+ (0.8%)
Shimane Ken1,500+ (0.8%)
Tottori Ken1,000+ (0.6%)

Public business listings: 199,000+
Businesses with email: 16,000+ (8.3%); 16,000+ email addresses in total. Some businesses list several.
Businesses with phone: 172,000+ (86.3%); 207,000+ phone numbers in total. Some businesses list several.
Businesses with a mobile phone: 9,000+ (4.5%); 8,500+ mobile numbers and 189,000+ landlines in total.

These figures describe SphereScout's current coverage of public business listings in Japan. They are not an official count of every business or licensed professional. Records marked permanently closed are excluded.

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Company	Location	Phone	Email
木の家	Ichinomiya, Aichi Ken	81 5 90	o*@k*.jp
イエスマン	Kita, Saitama Ken	81 1 84	b*@y*.jp
泉工業㈱札幌本社（土木･建築工事施工）	Shiroishi, Hokkaido	81 1 40	i*@i*.com
（株）平和建設建築暑さ対策遮熱工事	Sakura, Chiba Ken	81 4 24	h*@h*.jp
（有）みどり建装	Aoba, Kanagawa Ken	81 4 25	m*@o*.jp
小田鐵工	Gamagori, Aichi Ken	81 5 56	0*@g*.jp
BIZEX 合同会社	Kamisu, Ibaraki Ken	81 9 69	i*@y*.jp
Otabe	Odate, Akita Ken	81 1 19	o*@r*.jp
オカ商建	Owariasahi, Aichi Ken	81 5 10	o*@e*.jp
（株）小櫃建設	Soka, Saitama Ken	81 4 41	i*@k*.jp
16,000+ more contacts

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Related business types included

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HandymenGeneral contractorsConstruction companiesHome Builders

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Need more than this list? Japan Business Email List: 485,000+ businesses with emails across 19 industries.

How SphereScout prepares this business contact CSV

SphereScout turns public business profiles into a category-and-location export. The process uses the business categories shown in the current page breakdown and keeps official registers, classifications, licences, and inspections separate from the file.

Match the displayed business categories
SphereScout selects public business profiles matching the categories shown in the current page breakdown. These labels define the file's scope but do not replace official activity codes or authorizations.
Structure available public details
SphereScout organizes the available business name, category, location, website, email, phone, and public profile fields, then normalizes and deduplicates contact values for export.
Publish coverage and deliver the CSV
SphereScout refreshes public business profiles regularly, publishes the latest collection date and available coverage totals, and delivers the selected records as a structured CSV.

See collection timing and source methodology

Using business contacts in Japan

A published or purchased address is not blanket permission for advertising email. Japan's Act on Regulation of Transmission of Specified Electronic Mail is consent-led and identifies prior request or consent, an existing business relationship, and limited statutory exceptions. Commercial messages must carry the required sender information and must stop after a refusal. Personal information remains subject to the APPI.

Read Japan's official commercial-email law and APPI materials

Keep recipient-level evidence of the request, consent, business relationship, or specific exception relied on before sending advertising email.
Do not infer consent from a public listing, custom domain, role inbox, or purchased spreadsheet.
Display the required advertising designation, sender name and address, and a valid email address for refusal as applicable.
Stop sending after the recipient asks not to receive the advertising email and maintain a suppression list.
When a contact identifies a person, define and disclose the utilization purpose, limit use to that purpose, and apply appropriate APPI safeguards.
Validate that the business, operating company, geography, and offer are relevant before choosing email, telephone, or another channel.
The commercial-email rules do not grant permission for indiscriminate calls. Identify the caller and purpose, contact at reasonable times, keep the offer relevant, apply the APPI when a number identifies a person, and suppress further calls after an objection.

Classify the contact route before outreach

Evidence

Treatment

Consent or relationship evidenced

EvidenceA retained request or consent record, an existing business relationship, or another documented statutory basis for the intended advertising message.

TreatmentSend within the evidenced scope, include the required sender information and refusal route, and preserve the evidence.

Public business route only

EvidenceThe address or number appears on a business profile, but there is no evidence that the recipient requested or consented to advertising email.

TreatmentUse the profile for qualification. Do not treat publication alone as email consent; obtain permission or use a lawful alternative channel.

Identity or source unresolved

EvidenceThe domain, business, operating company, recipient, source context, or current status cannot be confirmed.

TreatmentValidate or exclude the record before contact. A Corporate Number match does not establish control of a branch inbox or permission to message it.

Frequently Asked Questions

How many general contractors in Japan have an email address?

16,000+ of the 199,000+ businesses (8.3%) list at least one email address. 172,000+ (86.3%) have a phone number.

Where are most general contractors in Japan located?

Tokyo To (13,000+, 6.9%), Osaka Fu (11,000+, 5.9%), and Aichi Ken (10,000+, 5.3%) have the most listings: together 18% of the 199,000+ businesses.

Can I get the list of general contractors in Japan for just one region?

Yes. The ready-made file covers all 199,000+ businesses. For a single region, create an account and build a custom list filtered by region: Tokyo To alone has 13,000+ of them (6.9%).

How many general contractors in Japan have a website?

81,000+ of the 199,000+ businesses (40.8%) list a website. Businesses without an email address can often be contacted through their site.

How up to date is the list of general contractors in Japan?

The figures come from the SphereScout snapshot of October 27, 2026. Counts are recalculated every week.

Are the phone numbers mobile?

Some are. 9,000+ businesses (4.5%) have a mobile number. The list has 8,800+ mobile numbers and 189,000+ landlines in total, in a separate Mobile Phones column.

General Contractors by country

SphereScout lists General Contractors in 45 countries. Largest market: United States (510,000+ public business listings).

Country	Public business listings	Businesses with email	Businesses with phone
United States	510,000+	154,000+(30.2%)	486,000+(95.3%)
Japan(this page)	199,000+	16,000+(8.3%)	172,000+(86.3%)
United Kingdom	99,000+	34,000+(34.2%)	89,000+(90.6%)
Brazil	85,000+	13,000+(15.5%)	72,000+(85.6%)
Canada	76,000+	28,000+(37.7%)	72,000+(94.3%)
Türkiye	65,000+	12,000+(18.5%)	48,000+(75.1%)
Germany	64,000+	5,500+(9%)	58,000+(90.8%)
France	56,000+	17,000+(30%)	50,000+(89%)
Italy	48,000+	13,000+(28.2%)	44,000+(90.8%)
Poland	45,000+	10,000+(22.4%)	42,000+(93%)
Spain	43,000+	9,000+(21.2%)	36,000+(84.8%)
Australia	42,000+	17,000+(40.8%)	38,000+(90.9%)
Netherlands	38,000+	11,000+(29.7%)	36,000+(93.6%)
Thailand	29,000+	1,000+(4.6%)	20,000+(72.3%)
Saudi Arabia	24,000+	2,000+(8.5%)	13,000+(56%)
Belgium	23,000+	9,000+(38.2%)	21,000+(92.1%)
Argentina	16,000+	1,500+(10.3%)	11,000+(72.7%)
United Arab Emirates	16,000+	3,000+(19.1%)	11,000+(68.9%)
Sweden	14,000+	5,000+(37%)	12,000+(87.3%)
Finland	11,000+	3,500+(30.6%)	10,000+(89.6%)
Switzerland	11,000+	5,000+(47%)	10,000+(92.3%)
Portugal	11,000+	2,500+(26.9%)	9,000+(83.8%)
Hungary	10,000+	3,000+(30.3%)	9,000+(86%)
Norway	8,500+	2,500+(28.3%)	8,000+(92%)
New Zealand	8,000+	3,000+(38.7%)	7,500+(92.8%)
Romania	7,000+	1,500+(25.3%)	5,500+(78.1%)
Slovakia	6,500+	2,500+(43.2%)	6,000+(93.2%)
Czechia	6,500+	2,000+(31.8%)	6,000+(93.9%)
Greece	6,500+	2,000+(32.1%)	5,500+(89.2%)
Austria	6,000+	2,500+(43.7%)	5,500+(92%)
Ireland	5,000+	1,000+(24%)	4,000+(86.6%)
Denmark	4,500+	1,000+(30.9%)	4,000+(91.4%)
Croatia	4,500+	1,000+(24.4%)	3,500+(83%)
Israel	4,000+	700+(17.2%)	4,000+(93.9%)
Bulgaria	4,000+	1,000+(31.7%)	3,500+(87.1%)
Serbia	3,500+	800+(22.9%)	2,500+(74.3%)
Qatar	3,000+	500+(16.1%)	2,000+(71.3%)
Oman	3,000+	200+(9.1%)	1,500+(54.2%)
Lithuania	2,500+	1,000+(33.7%)	2,500+(93.1%)
Estonia	2,500+	1,000+(45.5%)	2,500+(95.3%)
Kuwait	2,500+	200+(10.7%)	1,000+(50.6%)
Slovenia	2,000+	700+(33.2%)	1,500+(89.5%)
Bahrain	1,000+	100+(11.3%)	900+(72.8%)
Latvia	1,000+	400+(42.2%)	900+(91.6%)
Luxembourg	900+	200+(29.9%)	900+(94.5%)

Counts come from the latest SphereScout snapshot for each country. They describe public business listings, not an official count of every business.

General Contractors Email List in Japan

How many general contractors are there in Japan?

Where these listings are concentrated

Sample Preview

Choose your purchase option

Related business types included

Ready-to-use CSV for this business type

Build your custom list with an account

Get the Complete Database

How SphereScout prepares this business contact CSV

Match the displayed business categories

Structure available public details

Publish coverage and deliver the CSV

Using business contacts in Japan

Classify the contact route before outreach

Frequently Asked Questions

General Contractors by country

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