7.4 KiB
LAB-006 Septic Research
Issue: #531 Date: 2026-04-15 Status: public-doc research packet complete; live county/town calls and real quotes still pending
Scope of this packet
This is a proof-oriented research packet built from public New Hampshire sources. I did not claim any phone call, written county confirmation, engineer quote, or filed revision that did not actually happen.
What this packet does provide:
- official public source links
- a clearer answer on designer-vs-owner responsibilities
- the records lookup path for the existing approved septic plan
- the state contact point to call next
- a structured call and quote template for the live follow-up work
Most important findings
1. A revised septic application in New Hampshire still appears to require a permitted designer
Official NHDES septic systems page:
Direct language from the page:
- "Plans for proposed septic systems must be designed, prepared and submitted by a permitted New Hampshire septic system designer."
Implication for LAB-006:
- downsizing the approved plan from 3-4 bedroom to 1-bedroom is probably not a self-drawn paper edit if it changes the approved septic design/load assumptions
- moving the driveway on paper may also need designer involvement if it affects the approved layout or any required setback/field configuration
2. Owner-install appears possible in New Hampshire, but only in a narrow case
Official NHDES designer/installer page:
Direct language from the page:
- "Applications for individual sewage disposal systems or septic systems must be prepared by a permitted designer."
- "With the exception for homeowners installing for their primary domicile, septic systems must be constructed by a permitted installer."
Implication for LAB-006:
- public state guidance points to this answer:
- owner-install: likely YES, but only if the dwelling is the homeowner's primary domicile
- owner-designed / owner-submitted revised plan: public docs point to NO, because the application must still be prepared by a permitted designer
This is the strongest public answer I found without making the required phone calls.
3. The original approved septic documents should be searched in the NHDES records portal first
Official records portal / septic page:
- Septic records overview: https://www.des.nh.gov/land/septic-systems
- Subsurface OneStop portal: https://www4.des.state.nh.us/SSBOneStop/
Direct language from the septic systems page:
- "Our online Subsurface Onestop portal provides access to septic system records from 1967–1986 and 2016–present. You can search by property owner name, address, designer, installer or approval number."
- "Records from 1986–2016 are currently being digitized."
- "If you cannot locate your septic record in the SSB Onestop Portal, you may submit an archive request online."
Implication for LAB-006:
- first check OneStop for the approved plan and approval number
- if the property falls into the digitization gap, file the archive request instead of guessing
4. Public docs point first to NHDES Subsurface Systems Bureau, not just a county office
Official contacts:
- NHDES Septic (Subsurface) forms portal: https://onlineforms.nh.gov/home/?Organizationcode=NHDES_Septic
- NHDES Contact page: https://www.des.nh.gov/contact
Public contact details shown in NHDES materials:
- Subsurface Systems Bureau phone: 603-271-3501
- LRM Application Receipt Center email: LRM-ARC@des.nh.gov
- Mailing address: NHDES Subsurface Systems Bureau, 29 Hazen Drive, PO Box 95, Concord, NH 03302-0095
Important note:
- the issue body says to call Sullivan County Building/Health
- the public New Hampshire septic program pages point to the state Subsurface Systems Bureau for the septic application/design side
- that does NOT prove the town/county has no role in occupancy or local building sign-off
- it does mean the next call should include NHDES, not only a county office
5. Revised forms are required as of February 1, 2026
Official septic systems page:
Direct language:
- "Effective February 1, 2026: All submissions must comply with the revised Administrative Rules and use the revised forms."
Implication for LAB-006:
- if a revised plan is submitted, use the current NHDES septic forms rather than any old approval packet templates
Public-source answer to the main yes/no question
Based on the public NHDES pages reviewed today:
-
Can the owner revise and submit the septic plan without a designer?
- Public-doc answer: probably NO. The application/plans must be prepared by a permitted New Hampshire septic system designer.
-
Can the owner install the septic system personally?
- Public-doc answer: possibly YES, but only for a homeowner installing for their primary domicile.
This is still not the same as county/town confirmation for this exact parcel and occupancy path. That call is still required.
Best next live actions
-
Search the existing approval in Subsurface OneStop:
- by owner name
- by property address
- by designer name if known
- by approval number if any prior paperwork exists
-
If the file is not in OneStop, submit archive request.
-
Call NHDES Subsurface Systems Bureau at 603-271-3501 and ask:
- does downsizing an already-approved 3-4 bedroom septic plan to 1-bedroom require a newly prepared plan by a permitted designer?
- if the owner intends to self-install for a primary domicile, what exact homeowner-install form/process applies?
- what fee applies to revising an existing approved plan?
- does moving the driveway on the approved drawing trigger designer resubmission, site review, or other plan revision requirements?
-
Call the local building / occupancy authority for the parcel and confirm:
- who actually signs off the occupancy permit
- whether they defer fully to NHDES for septic revision
- whether any separate local building/driveway/site paperwork is required
-
If NHDES confirms designer-prepared revision is mandatory, get a designer quote immediately instead of spending more time on owner-submittal paths.
What I did NOT verify
I did not verify any of the following as completed facts:
- that Sullivan County itself is the final septic approval authority for this parcel
- that a revised 1-bedroom plan has already been drafted or submitted
- that owner-install is permitted for this exact property after all local conditions are applied
- the exact revision fee
- any real contractor quote
Recommended practical interpretation
Today’s public-doc evidence strongly supports this working assumption:
- design/revision work -> permitted septic designer
- physical installation -> homeowner may be able to do it for a primary domicile
- records/process/questions -> start with NHDES Subsurface Systems Bureau and OneStop
That is enough to stop guessing and start the right calls.
Evidence links
- NHDES Septic Systems: https://www.des.nh.gov/land/septic-systems
- NHDES Septic Designer and Installer: https://www.des.nh.gov/land/septic-systems/septic-designer-or-installer
- NHDES Septic Online Forms: https://onlineforms.nh.gov/home/?Organizationcode=NHDES_Septic
- NHDES Subsurface OneStop: https://www4.des.state.nh.us/SSBOneStop/
- NHDES Contact page: https://www.des.nh.gov/contact
Deliverables in this PR
- this research memo
- a call-log and quote-tracker template for the live follow-up work