Updated: Jun 14, 2026
Location and Projects
Address
31 COLLINS ST TERRACE, Swampscott, MA, 01907
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William J De Iulis Construction
Based in Swampscott, Massachusetts, William J De Iulis has provided general contracting services throughout the North Shore region for over 15 years. The firm works with residential property owners on a range of construction and renovation projects. With experience gained from more than a decade in the industry, William J De Iulis manages projects for single-family homes as well as multifamily residences, addressing various improvement needs. The company serves communities in and around Swampscott, supporting clients seeking additions, interior remodeling, and structural repairs. Known for coordinating local permitting requirements and guiding clients through each phase of the construction process, William J De Iulis offers established knowledge of building codes relevant to Massachusetts properties. The contractor prioritizes efficient project oversight from initial planning through final completion.
William J De Iulis Services
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William J De Iulis Contact Information
Address: 31 COLLINS ST TERRACE, Swampscott, MA 01907
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William J De Iulis Swampscott
Quality
96
80th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
William J De Iulis has a BuildZoom score of 96, which places them above 80% of 139,240 contractors in Massachusetts.
Activity
|
1 project
|
2024 |
|
1 project
|
2023 |
Our building permit records indicate that William J De Iulis has worked on at least
2.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$1mil+ |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Modphase: building envelope upgrades new accessible apartments community room renovations electrical system upgrades exterior decking & railing repair and painting window and door replacement site accessibility new lula addition sprinkler installation interior painting site improvements and additional parking at the forestdale 667-3 elderly housing development
Valuation:
$12,359,000
Permit #:
CMID-053389-2023
Status:
final
Fee:
$248,464
Permit Type:
N/A
Building Type:
N/A
Caulking painting concrete balcony repairs minor brick masonry repointing minor roof patching. no structural work
Valuation:
$763,919
Permit #:
SF877512
Status:
filed
Fee:
$7,660
Permit Type:
N/A
Building Type:
Other
Multi-phased project that includes interior renovations of sleeping rooms public restrooms laundry room chapel and minor mechanical repairs. exterior work includes a new handicap ramp to enter exit the chapel and minor concrete sidewalk replacement on the property. limited fp work
Valuation:
$4,436,280
Permit #:
ALT895036
Status:
filed
Fee:
$46,222
Permit Type:
N/A
Building Type:
Other
Priests residencesalt895036 issued 1/4/19 sf 977512 issued 10/2/18 a 925909 issued 6/28/19
Valuation:
$5,200,199
Permit #:
COO1163620
Status:
complete
Fee:
$3,705
Permit Type:
N/A
Building Type:
Other
Phase one: re pointing brick & resurfacing at balconiesphase two: sewer line repairphase three: partial roof replacementphase four: interior fit-up & renovations to existing rooms & bathrooms (tbd)
Valuation:
$350,000
Permit #:
SF39322
Status:
filed
Fee:
$3,520
Permit Type:
N/A
Building Type:
7More
Deiulis brothers construction has been authorized by nsmc salem hospital to construct a temporary enclosure cover at their covid-19 testing site trailer. sketches have been drawn to show the intent on what is to be constructed
Valuation:
$13,000
Permit #:
C-20-0931
Status:
complete
Fee:
$182
Permit Type:
Temporary enclosure
Building Type:
N/A
Construction of the new east boston branch libraryplans @ lpr
Valuation:
$9,678,800
Permit #:
ERT121894
Status:
filed
Fee:
$99,149
Permit Type:
N/A
Building Type:
Other
No Description Available
Valuation:
N/A
Permit #:
48534
Status:
active
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
38586
Status:
active
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
38562
Status:
active
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
40201
Status:
active
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Modphase: building envelope upgrades new accessible apartments community room renovations electrical system upgrades exterior decking & railing repair and painting window and door replacement site accessibility new lula addition sprinkler installation interior painting site improvements and additional parking at the forestdale 667-3 elderly housing development
Valuation:
$12,359,000
Permit #:
RES-053296-2023
Status:
canceled
Fee:
$201,674
Permit Type:
N/A
Building Type:
N/A
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William J De Iulis License info
Verified License
| License # | CS-104078 |
| Status | Active |
| State | Massachusetts |
| Type | Building Licenses, Construction Supervisor |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for William J De Iulis at the Massachusetts Department of Public Safety.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 106230 |
| Status | Active |
| City | Newton |
| Type | General Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2022. Check the current license status of William J De Iulis with the City of Newton Massachusetts
This is a sample of licensing data; click here to access a complete history.
96
BuildZoom Score
9
Permits
- Building permit records show that William J De Iulis has worked on 9 permitted projects.
William J De Iulis Employees
DI
Deiulis Brothers Constr Co Inc
Owner