Updated: May 30, 2026
Location and Projects
Address
9 Jefferson Ave, Wilmington, DE, 19805
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Dewson Construction Coinc Photos
Dewson Construction Coinc
Dewson is defined by our superior craftsmanship, attention to detail and customer service. We work side by side with our clients, advising on every project phase from architectural design to kitchen faucet selections and incorporate old world craftsmanship as well as modern resources which enable us to produce a home of unparalleled quality.
From BuildZoom: Dewson Construction Coinc, 9 Jefferson Ave, Wilmington, DE (Owned by: Timothy J Dewson) holds a Home Improvement license and 3 other licenses according to the Maryland license board.
Their BuildZoom score of 119 ranks in the top 1% of 8,071 Delaware licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Dewson Construction Coinc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Dewson Construction Coinc Services
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Dewson Construction Coinc Contact Information
Phone Number: (302) 427-2250
Address: 9 Jefferson Ave, Wilmington, DE 19805
Dewson Construction Coinc Wilmington
Quality
119
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Dewson Construction Coinc has a BuildZoom score of 119, which places them above 99% of 8,071 contractors in Delaware.
Activity
|
15 projects
|
2025 |
|
18 projects
|
2024 |
|
23 projects
|
2023 |
Our building permit records indicate that Dewson Construction Coinc has worked on at least
56.0 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.
Experience
|
12 projects
|
New Constructions |
|
11 projects
|
Home Additions |
|
9 projects
|
Multi-room remodels |
|
6 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Dewson Construction Coinc mostly works on
new construction
and home addition
projects.
Pricing
|
1 project
|
$20k-$50k |
|
4 projects
|
$100k-$250k |
|
7 projects
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $371,371. This graph shows the distribution of these job values.
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.
Building Permits by Dewson Construction Coinc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Residence. addition out of town addition (gym/lounge bed/bath) 14x20 drywall trim windows siding floors tile bathrm fixtures (remodel)
Valuation:
$463,864
Permit #:
235994
Status:
issued
Fee:
$1,397
Permit Type:
N/A
Building Type:
N/A
Dwelling out of town 4 st dw 69 x 50 attach garage 28 x 44 porch(1) 23 x 10 dk(1)14x5 dk(2)23x10 dk(3)14x32 dk(4)27x28 dk(5)6x28
Valuation:
$440,048
Permit #:
239649
Status:
issued
Fee:
$1,328
Permit Type:
N/A
Building Type:
N/A
Dwelling out of town 3 st dw 64 x 50 attach garage 20 x 22 porch 8 x 66 balcony(1) 9 x 15 balcony(2) 6 x 17 pool patio 16 x 40
Valuation:
$371,371
Permit #:
224002
Status:
issued
Fee:
$1,121
Permit Type:
N/A
Building Type:
N/A
Residence. addition out of town 3 st addition 564 sq ft (mec/stor room elev full bathroom pantry) roof top dk 20x10 scrn exist dk os 8x4 complete int reno
Valuation:
$489,472
Permit #:
208239
Status:
issued
Fee:
$1,475
Permit Type:
N/A
Building Type:
N/A
Dwelling out of town 3 st dw 52 x 48 attach garage 23 x 24 porch(1) 4 x 8 o/s 10 x 5 porch(2) 35 x 16 deck(1) 48 x 15 deck(2) 38 x 15
Valuation:
$380,450
Permit #:
213752
Status:
issued
Fee:
$1,148
Permit Type:
N/A
Building Type:
N/A
Dwelling out of town 2 st dw 176x65 attach garage 24x24/48x24 por 12x24 por 16x6 deck 24x40 deck 65x29 o/s shower 6x5
Valuation:
$830,450
Permit #:
213750
Status:
issued
Fee:
$2,498
Permit Type:
N/A
Building Type:
N/A
Dwelling in town 2 st dw 51x56 unf basement 46x56 porch 9x9 12x20 deck 7x26 unf attic 16x27
Valuation:
$244,166
Permit #:
237972
Status:
issued
Fee:
$493
Permit Type:
N/A
Building Type:
N/A
Dwelling in town 3 st dw 62x36 on exist pilings attach garage 35 x 30 o/s sun deck 10x10 balcony 7x5 roof deck 12x26 9x34
Valuation:
$283,321
Permit #:
217691
Status:
issued
Fee:
$571
Permit Type:
N/A
Building Type:
N/A
Dwelling out of town 2 st dw 48x83 attgar 21x29 basement 45x48 por 37x13 deck 22x8 22x6 14x38 15x23
Valuation:
$377,679
Permit #:
220880
Status:
issued
Fee:
$1,139
Permit Type:
N/A
Building Type:
N/A
1, 664 sf storage building (rev 10/5/21: addition powder room) (rev 10/7/21: delete retaining wall at lower corner of storage building revise grading accordingly structural changes on drawings s1.1 s1.2 s3.1 s3.2 s4.1) (rev 11/1/21: remove angled tapering retaining wall and replace with conventional foundation return wall) (rev 3/17/22: 1st floor move powder room addition partition wa... see more
Valuation:
N/A
Permit #:
202108936
Status:
final
Fee:
$1,040
Permit Type:
Building addition
Building Type:
Residential
Master suite & bathroom addition renovation (3/24/22 rev eliminated the dome on the ceiling of the dressing room. no need for r49 insulation can now use r-38 batt insulation)
Valuation:
N/A
Permit #:
202107988
Status:
final
Fee:
$534
Permit Type:
Building addition
Building Type:
Residential
Dwelling in town 2 st dw 47x26 fin basement 38x26 front por 10x25 deck 9x5 unfin attic 47x26
Valuation:
$168,906
Permit #:
240190
Status:
issued
Fee:
$341
Permit Type:
N/A
Building Type:
N/A
Dwelling in town 2 st dw 79 x 61 attach garage 23 x 20 porch(1) 10 x 12 porch(2) 5 x 18 deck 16 x 11 pool & outside shower
Valuation:
$388,831
Permit #:
189650
Status:
issued
Fee:
$781
Permit Type:
N/A
Building Type:
N/A
Misc. in town addition: 2nd floor-bedrooms & baths 1st floor den & pantry renovations: the 1st floor
Valuation:
$139,168
Permit #:
232816
Status:
issued
Fee:
$283
Permit Type:
N/A
Building Type:
N/A
4 st dw 24 x 86(irr shape) attach garage 26 x 86, porch(1) 22 x 7porch(2) 22 x 7, dk(1) 66 x 11, 13 x 20, dk(2) 11 x 6 elevator
Valuation:
$396,075
Permit #:
159348
Status:
complete
Fee:
N/A
Permit Type:
Dwelling
Building Type:
N/A
Dwelling out of town 2 st dw 90x40 attach garage 29x36 unf base 90x40 porch 35x16 39x18
Valuation:
$236,631
Permit #:
212445
Status:
issued
Fee:
$716
Permit Type:
N/A
Building Type:
N/A
Residence. addition-in town full gut: flooring painting drywall insulation bathrm windows trim 2nd sty addition 26x41 (3 bedroom 3 baths)
Valuation:
$228,268
Permit #:
185205
Status:
issued
Fee:
$461
Permit Type:
N/A
Building Type:
N/A
Residential addition/renovation (revision 10/28/22:changing mbr clg. joists to metal tie rods addition stucco specs alter. extr. foundation details.)
Valuation:
N/A
Permit #:
202203904
Status:
final
Fee:
$739
Permit Type:
Building addition
Building Type:
Residential
Misc. out of town remodel: bathrooms-fixtures tile floors windows drywall paint cabinets counters
Valuation:
$300,000
Permit #:
195206
Status:
issued
Fee:
$905
Permit Type:
N/A
Building Type:
N/A
870 sf garage and 233 sf additional living area new mud room entry - revised 10/1/2025: adding stairwell adding kids playroom above garage with isulation drywall recessed lights and x2 egress casement windows on each gable end - revision: 10/24/2025 - added bathroom to second floor playroom off detached garage revised structural plan added - new steel beams to bring trusses to proper ... see more
Valuation:
N/A
Permit #:
202507540
Status:
issued
Fee:
$698
Permit Type:
Building addition
Building Type:
Residential
Dewson Construction Coinc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Dewson Construction Coinc License info
Verified License
| License # | 49586 |
| Status | Active |
| State | Maryland |
| Type | Home Improvement |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Dewson Construction Coinc at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 1993105755 |
| Status | Active |
| State | New Castle County |
| Type | Resident Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Dewson Construction Coinc with the State of Delaware Department of Finance: Division of Revenue
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 49585 |
| Status | Active |
| State | Maryland |
| Type | Contractor (Corppart) Home Improvement |
- When BuildZoom last verified this license, it had an expiration date of April, 2015. Check the current license status of Dewson Construction Coinc with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 13VH04922200 |
| Status | Inactive |
| State | New Jersey |
| Type | Home Improvement Business Contr |
- According to the New Jersey Department of Law & Public Safety, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Dewson Construction Coinc at the New Jersey Department of Law & Public Safety.
This is a sample of licensing data; click here to access a complete history.
119
BuildZoom Score
319
Permits
- Building permit records show that Dewson Construction Coinc has worked on 319 permitted projects.
Dewson Construction Coinc Employees
TD
Timothy J Dewson
Owner