Property due diligence · August 10, 2026 · 10 minute read
Plumbing and sewer due diligence for Michigan IRA property
Before a self-directed IRA buys Michigan property, review supply and drain systems, sewer scope, permits, repair costs, records, and account procedures.
A faucet can run during a showing while a slow leak remains hidden below the cabinet. A basement floor drain can look clean even when the building sewer has roots, a low spot, or a repair history nobody documented. Plumbing due diligence connects the fixtures inside the building with the water service, supply piping, water-heating equipment, drains, vents, and the line that carries waste away from the property.
That review has an extra planning layer when a self-directed IRA will own the property. Inspection fees, camera work, deposits, emergency service, and accepted repairs need a payment process that fits the account. The buyer should settle that process before a leak or backup forces a rushed decision.
Start with records instead of opening every tap
Ask for plumbing permits, final inspection records, invoices, warranties, water-heater records, sewer or drain service reports, utility correspondence, insurance claims, water-damage repairs, winterization records, and seller disclosures. For an occupied property, also review maintenance requests and completed work without collecting personal tenant information that the transaction does not need.
Match each record to a physical component. An invoice for a new kitchen sink does not establish that the supply piping behind the wall was replaced. A receipt for drain cleaning does not explain why the stoppage occurred or whether it returned. A permit for one bathroom does not prove that later basement, laundry, commercial, or unit-conversion work was included.
- Water source, meter, service entry, main shutoff, pressure controls, distribution piping, and visible branch lines
- Water heaters, recirculation equipment, mixing devices, expansion components, relief discharge, fuel or electrical connections, and drains
- Fixtures, traps, vents, cleanouts, floor drains, sump or sewage equipment, and visible waste piping
- Building sewer route, prior backups, camera reports, repairs, utility notices, easements, and any shared or private arrangement
- Areas that were altered, could not be accessed, were winterized, or were not operated during the inspection
Map water in and waste out
Draw a simple property map. Mark the service entry, meter, main shutoff, water heaters, kitchens, bathrooms, laundry connections, mechanical rooms, hose connections, floor drains, cleanouts, sump discharge, and the likely building-sewer path. For a duplex, mixed-use building, or property with additions, note which fixtures and equipment serve each unit or space.
Compare that map with leases, utility accounts, legal unit count, and the proposed use. Separate meters do not always mean every pipe is separate. A common water heater, shared shutoff, drain crossing another unit, or cleanout inside a tenant space can affect billing, access, maintenance, and emergency response. A future use may also need a different professional review even when the current system works for today's occupants.
Use the enforcing agency for the exact address
Michigan LARA describes plumbing as water-supply, sanitary and storm-drainage, venting, and related work within or next to a building. Its current Plumbing Permit Information page says plumbing work generally should not begin until the appropriate enforcing agency issues a permit. The page lists limited exceptions for work on the operating parts of a faucet or valve and for clearing a stoppage when existing piping or fixtures are not altered.
LARA also explains that plumbing code enforcement can be handled by the state, a county, or a local unit of government. It directs applicants to the Statewide Jurisdiction List because the responsible office can change. Ask the agency for the property address which records it holds, whether an older permit was finalized, and what approval path applies to proposed work. A closed permit documents a defined scope at a point in time. It is not a present-day condition report for the whole system.
The same LARA page says plumbing-permit applicants are generally licensed plumbing contractors or homeowners installing plumbing at their own homes, with additional details for building sewers and water services. An IRA-owned investment property should not assume that a homeowner provision fits its ownership or use. Verify the applicant, license, supervision, and permit requirements with the enforcing agency before accepting a bid or promising a repair timeline.
Give the inspector a useful scope
A general property inspection can identify visible leaks, fixture operation, staining, and basic drainage concerns. It may not include a sewer camera, invasive access, water-quality testing, concealed piping, specialized pressure or flow measurements, or a design review. Ask what the inspection includes, what it excludes, which systems will be operated, and what conditions would trigger a licensed plumbing contractor or another specialist.
The report should separate observations from assumptions. Record active leakage, corrosion, patching, unsupported piping, damaged fixtures, unusual materials, slow drainage, odors, stains, soft finishes, failed caulk, missing access, noisy equipment, and improvised connections. Also record what could not be tested because the building was occupied, winterized, vacant, shut down, unsafe to access, or missing utility service.
Do not turn one good flow test into a verdict on the entire building. Pressure and drainage can change when several fixtures operate at once. Upper floors, distant units, irrigation, commercial equipment, and peak tenant use may reveal a different pattern. Let the qualified professional choose safe tests for the system and building rather than asking an inspector to create a leak or overflow for the sake of a demonstration.
Review the water service and supply piping
Identify the visible service entry and distribution materials, then trace accessible piping through basements, crawlspaces, utility rooms, ceilings, and unit shutoffs. Ask about low pressure, discolored water, recurring pinhole leaks, freeze damage, prior repiping, abandoned lines, and work concealed by recent finishes. Material identification from a small visible section may not describe the service outside, the piping inside walls, or later repairs made with another material.
Confirm that the main shutoff and important branch shutoffs can be located and operated safely by the right professional. Ask who owns and maintains the service line on each side of the meter, where responsibility changes, and whether the utility has notices, replacement records, special billing, or planned work tied to the address. Those answers depend on the utility and property. Do not import a rule from a neighboring municipality.
If water quality, service-line material, cross-connections, private treatment equipment, or a proposed commercial use raises questions, define a separate review with the utility, health authority, laboratory, plumbing contractor, and other appropriate professionals. A visual inspection cannot answer every water-quality question, and a laboratory result needs the correct sampling method and context.
Follow leaks beyond the plumbing repair
A repaired pipe may leave wet cabinets, damaged subfloor, stained drywall, corroded fasteners, deteriorated insulation, or microbial growth. Ask when the leak occurred, how long it continued, what was opened, how the area was dried, and which materials were replaced. Compare invoices and photographs with the visible repair. If the extent is unclear, coordinate plumbing findings with moisture, mold, structural, electrical, and finish specialists.
Look closely at quiet areas: under sinks, behind access panels, below bathrooms, around water heaters, near exterior hose connections, beneath laundry equipment, and along basement or crawlspace piping. Fresh paint or a new cabinet bottom is not proof of a problem, but it is a reason to ask what was repaired and whether the source and resulting damage were both addressed.
Treat the building sewer as its own asset
The line between the building and the public main can be expensive to reach and easy to ignore. Ask for its approximate route, material, age information, cleanout locations, repair history, backup history, camera recordings, excavation records, and any lining or replacement warranty. Confirm whether the property has one line, several lines, a shared connection, an ejector, or another arrangement that changes access and maintenance.
When a sewer camera is appropriate, give the contractor the records and ask for a report that identifies the access point, how far the camera traveled, observed materials or transitions, defects or deposits, limits, and the location method used for significant findings. A recording without distance, direction, or explanation can be difficult to price. A camera may also be blocked before reaching the area that matters, so an incomplete run should remain an open item.
Roots, offsets, cracks, bellies, deposits, repeated cleaning, or a recent repair do not produce one automatic purchase decision. Ask a qualified contractor to explain severity, likely cause, monitoring or repair options, access, excavation limits, utility coordination, permits, restoration, and the uncertainty in the estimate. Then verify with the municipality or utility who is responsible for each segment and whether liens, assessments, connection charges, or planned public work affect the property.
Coordinate plumbing with the rest of the building
Plumbing does not stay in a plumbing-only box. Water heaters can involve fuel, venting, electrical supply, structural support, drainage, and mechanical-room clearances. Roof drains and storm piping can connect to roof, site-drainage, and foundation questions. Sump discharge can affect grading or municipal requirements. A commercial kitchen, salon, medical use, laundry, or manufacturing process may add equipment and discharge questions beyond ordinary residential fixtures.
Compare the current system with the lawful proposed use. Added bedrooms, divided units, finished basements, new bathrooms, food service, tenant improvements, or accessibility work can change fixture, venting, hot-water, drainage, and permit needs. Ask the enforcing agency and design professionals what the proposal requires before the budget treats existing pipes as adequate.
Build estimates that include access and restoration
Give bidders the same written findings. Ask them to separate diagnosis, immediate repair, recommended replacement, permits, inspections, excavation, utility coordination, demolition, drying, hazardous-material review, finish restoration, testing, cleanup, and closeout records. A low plumbing price may exclude the wall, floor, driveway, landscaping, tenant coordination, or environmental work needed to reach and restore the pipe.
Put accepted costs beside taxes, insurance, utilities, management, vacancy, and other known repairs. Keep contingencies visible when the camera could not pass, the route is uncertain, finishes conceal the system, or a municipality has not answered a responsibility question. Do not make the budget work by assuming higher rent, uninterrupted occupancy, appreciation, refinancing, or an insurance payment. None is guaranteed.
Plan occupied work with consistent procedures
For an occupied property, decide who receives leak and backup reports, gives lawful notice, arranges access, authorizes emergency work, communicates water shutoffs, protects belongings, and documents completion. The property manager and Michigan attorney should review lease duties, local requirements, emergency procedures, accommodation requests, and any temporary arrangements. A contractor defines the safe work scope; the contractor does not decide the housing provider's legal obligations.
HUD states that the Fair Housing Act prohibits housing discrimination because of race, color, national origin, religion, sex, familial status, or disability. Use consistent procedures for inspections, response priorities, entry, temporary measures, and communication. Base decisions on documented conditions, qualified recommendations, lease rights, accommodation obligations, and applicable law rather than protected characteristics. Michigan and local protections may also apply.
Keep every contract and payment inside the IRA process
Ask the self-directed IRA custodian how inspections, camera work, contractor deposits, permits, utility charges, emergency calls, repairs, refunds, warranties, and insurance proceeds must be authorized and paid. Confirm the purchaser name, signature authority, invoice wording, funding time, and who can approve a change order. If the seller will perform work before closing, the purchase agreement should define the scope, contractor credentials, permits, final approvals, documentation, access, and buyer verification.
Current IRS retirement-plan guidance says prohibited transactions generally include sales, exchanges, leases, loans, extensions of credit, and furnishing goods, services, or facilities between a plan and a disqualified person. It also addresses use of plan income or assets for a disqualified person's benefit. Do not assume the IRA owner can repair piping, supply materials, pay a contractor personally, or let a disqualified person provide labor. The custodian, CPA, and attorney should review the people, work, contracts, signatures, and payment route before anyone acts.
This article is educational, not legal, tax, financial, plumbing, engineering, environmental, health, insurance, fair-housing, retirement-plan, or investment advice. No property, plumbing system, contractor, repair, ownership structure, or strategy is approved or endorsed by the IRS. Have your own self-directed IRA custodian, CPA, Michigan attorney, property inspector, licensed plumbing contractors, utility, enforcing agency, insurer, property manager, and other qualified advisors review the account, property, records, proposed use, and work before taking action.
Leave closing with a usable plumbing file
Keep the system map, inspection report, camera files, photographs, permits, final approvals, invoices, warranties, utility correspondence, contractor credentials, scopes, estimates, water-damage records, tenant communications, custodian instructions, and closing documents together. Mark every untested fixture, inaccessible area, uncertain route, and unanswered agency question. Add follow-up dates so a missing answer does not disappear after closing.
Primary sources for the public-rule portions of this review include Michigan LARA's Plumbing Permit Information, Statewide Jurisdiction List, plumbing licensing pages, and license-search tools; HUD's Fair Housing Act overview; and the IRS retirement-plan investment and prohibited-transaction guidance. Those sources describe a general framework. The answer for one property comes from current records, field inspection, the responsible utility and enforcing agency, and the buyer's own qualified professionals.
Rennie can help identify West Michigan property and coordinate the real estate records, professional access, repair questions, and offer deadlines needed for this review. Plumbing conclusions, sewer responsibility, contractor selection, code requirements, legal duties, and retirement-account decisions stay with the buyer's own professionals and public authorities.
Educational information only, not legal, tax, or investment advice. Self-directed IRA transactions must be reviewed with your own custodian, CPA, and attorney. Not all retirement funds are eligible to move, and not all properties or strategies fit IRA rules.

Rennie Barton
Realtor®, Broker/Owner, City2Shore Arete Collection. Rennie helps West Michigan buyers locate and evaluate real estate. His clients make retirement-account decisions with their own custodian, CPA, and attorney.
