Builder Lookup ยท Fairfax, Arlington, Loudoun and Alexandria permit record
Sustainable Energy Systems LLC
Virginia contractor license 2705161645, Class A (no limit on contract size), specialties Electrical and Alternative energy system contracting. Licensed since September 21, 2016; expires July 31, 2028. Per the DPOR regulant list retrieved September 11, 2026.
Frederick, MD
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Fairfax County
Sustainable Energy Systems LLC has 13 jobs on Fairfax County permit records issued September 1, 2022 to September 12, 2026 (15 permits), mostly solar installations. Retrieved September 12, 2026.
Jobs by year
Peer groups
In Solar: 13 jobs.
Closes slower than most peers in this group, based on 12 closed permits in this group. County review cycles, owner decisions and final-inspection scheduling are all inside this number.
Completion below the group median, based on 15 permits in this group. County review cycles, owner decisions and final-inspection scheduling are all inside this number.
Works for
Worked for individual homeowners on 100% of jobs; the rest were company-owned properties (builders, investors, LLCs).
Crew
No electrical, plumbing or mechanical firm shares 3 or more permitted sites with this firm on record.
Where they work
Jobs by zip code
Fewer than 3 jobs in any one zip code.
Zip codes and map cells with fewer than 3 jobs are not shown.
Fewer than 3 jobs in any one map cell, so no map is shown.
Arlington County
Sustainable Energy Systems LLC has 5 jobs on Arlington County permit records issued September 1, 2022 to September 10, 2026 (5 permits), mostly solar installations. Retrieved September 11, 2026.
Jobs by year
Peer groups
In Solar: 5 jobs, median declared value $21,870 (group median $18,295).
Not enough record to compare. 5 jobs since September 1, 2022.
Works for
Worked for individual homeowners on 100% of jobs; the rest were company-owned properties (builders, investors, LLCs).
Crew
No electrical, plumbing or mechanical firm shares 3 or more permitted sites with this firm on record.
Where they work
Jobs by zip code
Fewer than 3 jobs in any one zip code.
Zip codes and map cells with fewer than 3 jobs are not shown.
Fewer than 3 jobs in any one map cell, so no map is shown.
Loudoun County
Sustainable Energy Systems LLC has 4 jobs on Loudoun County permit records issued July 1, 2023 to August 31, 2026 (4 permits), mostly solar installations. Retrieved September 11, 2026.
Jobs by year
Peer groups
In Solar: Not enough record to compare. 3 jobs since July 1, 2023.
In Commercial: Not enough record to compare. 1 job since July 1, 2023.
Crew
No electrical, plumbing or mechanical firm shares 3 or more permitted sites with this firm on record.
Where they work
Jobs by zip code
Fewer than 3 jobs in any one zip code.
Zip codes and map cells with fewer than 3 jobs are not shown.
Fewer than 3 jobs in any one map cell, so no map is shown.
City of Alexandria
Sustainable Energy Systems LLC has 1 job on City of Alexandria permit records issued September 1, 2022 to September 15, 2026 (2 permits), mostly solar installations. Retrieved September 15, 2026.
Jobs by year
Peer groups
In Solar: Not enough record to compare. 1 job since September 1, 2022.
Works for
Worked for individual homeowners on 100% of jobs; the rest were company-owned properties (builders, investors, LLCs).
Crew
No electrical, plumbing or mechanical firm shares 3 or more permitted sites with this firm on record.
Where they work
Jobs by zip code
Fewer than 3 jobs in any one zip code.
Zip codes and map cells with fewer than 3 jobs are not shown.
Fewer than 3 jobs in any one map cell, so no map is shown.
Sources and notes
- Arlington County permit records (open data API), retrieved September 11, 2026
- Arlington County permit portal, retrieved September 11, 2026
- Loudoun County issued building permit reports (monthly), retrieved September 11, 2026
- City of Alexandria APEX permit portal (public search and permit details), retrieved September 15, 2026
- Fairfax County PLUS permit portal, "Building Records Issued" report, retrieved September 12, 2026
- Virginia DPOR regulant lists (contractor and tradesman licenses), retrieved September 11, 2026
- Fairfax County: permits issued September 1, 2022 to September 12, 2026. First permit in window November 15, 2022; most recent February 3, 2025. 15 permits, 13 jobs.
- Arlington County: permits issued September 1, 2022 to September 10, 2026. First permit in window October 6, 2022; most recent April 19, 2023. 5 permits, 5 jobs.
- Loudoun County: permits issued July 1, 2023 to August 31, 2026. First permit in window August 29, 2023; most recent December 26, 2024. 4 permits, 4 jobs.
- City of Alexandria: permits issued September 1, 2022 to September 15, 2026. First permit in window October 21, 2022; most recent October 25, 2022. 2 permits, 1 job.
- Jobs are distinct permitted sites; a site with several permits counts once.
Permit records show what was permitted, when, and by whom. They do not show workmanship, price fairness, or unpermitted work. Declared values are entered by applicants and are commonly understated. Completion figures reflect the county's closing process and are shown only relative to peers in the same window. Fairfax County, Arlington County, Loudoun County and City of Alexandria disclaim the accuracy of their data; so does this site.
Name as written on county permits:SUSTAINABLE ENERGY SYSTEMS; SUSTAINABLE ENERGY SYSTEMS LLC. DPOR license number 2705161645.