How We Coordinated Three Trades on One Issaquah Rental in Six Weeks | Valta Homes Blog
Behind the Scenes
How We Coordinated Three Trades on One Issaquah Rental in Six Weeks
When an Issaquah rental needed mold remediation, a full roof replacement, and patio repairs all at once, our team coordinated three trades over six weeks using daily construction logs.
When a rental property needs one major repair, most landlords can handle the logistics. But when three separate trades need to work on the same property at the same time? That is where things get complicated fast.
We recently managed a six-week renovation on an Issaquah rental that required mold remediation, a full roof replacement, and exterior patio repairs — all running in parallel. The landlord lives out of state and needed someone to coordinate the entire project from start to finish.
Here is exactly how we pulled it off, what went wrong along the way, and what every King County landlord should know about managing multi-trade renovations on rental properties.
The Starting Point: One Problem Led to Three
The project started with a roof leak. During a routine inspection, our team found water intrusion in the attic. That is not unusual for older homes in the Pacific Northwest — decades of rain will eventually find a way in.
But when we investigated the leak, we found something worse: mold growth in the attic space directly below the damaged roofing. The moisture had been accumulating for months, creating the perfect conditions for mold to spread.
We also flagged a rotting board on the exterior patio during the same inspection. Not an emergency, but the kind of thing that gets worse every winter if you ignore it.
So now we had three problems on a single property:
A roof that needed full replacement — not just patching
Active mold that required professional remediation — not just cleaning
A deteriorating patio board — structural, not cosmetic
Each of these is a significant project on its own. Running all three at once on the same property requires careful sequencing, clear communication, and daily tracking. Here is the framework we used.
Why Sequencing Matters More Than Speed
The first instinct most landlords have is to get everything done as fast as possible. We get it — every day a property sits vacant or under construction is lost rental income. But rushing multi-trade work creates problems.
Consider what happens if you start the roof replacement before finishing mold remediation. Tearing off old roofing materials sends debris everywhere. If the attic is still being treated for mold, you have contamination risks, airflow disruptions, and workers from different trades getting in each other's way.
Or imagine repairing the patio while roofers are throwing old shingles off the side of the house. That new patio board is going to take a beating.
The correct sequence for this property was:
Mold remediation first (interior work, contained environment)
Roof replacement second (exterior work, requires clear attic)
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Patio repair last (small exterior job, needs clear work area)
Getting this order right saved the landlord from rework costs and kept the project timeline on track.
Step 1: Mold Remediation — The Foundation of Everything Else
Before any other work could begin, the mold had to go. Our team, led by Jason, started the remediation process in late February.
Here is what the mold remediation involved:
Assessment and containment: We identified the full extent of mold growth in the attic and set up containment barriers to prevent spores from spreading to other areas of the home.
Treatment protocol: We used Concrobium, an EPA-registered mold control product, as the primary treatment agent. For supplemental cleaning, we mixed hydrogen peroxide at a 6% concentration — purchased as 12% from Home Depot and diluted 1:1 with water to get six gallons of working solution.
Drying and verification: After treatment, the affected areas needed time to dry completely before we could clear the space for roofing work.
The treatment specifics matter because many landlords get quoted for mold remediation without understanding what products are being used. Concrobium is one of the few EPA-registered options that actually prevents mold regrowth rather than just killing surface mold. If your mold remediation contractor cannot tell you exactly what products they are using and why, that is a red flag.
We documented every step with daily construction logs and photos. The landlord could see exactly what was happening each day without making a single phone call. More on that system in a moment.
With the mold handled, we moved to the roof. This was the biggest line item on the project and the one that required the most careful vendor management.
We collected three quotes for the full roof replacement:
Contractor A (Chinook): $22,852 for a full replacement, or $5,434 for repair only
Contractor B (DAG): Started at $15,000, then increased to $19,000 after learning we needed CertainTeed Presidential shingles
Our internal team (Valta): $12,750 for the full replacement
The price spread was over $10,000 between the highest and lowest quotes. That is not unusual for roofing projects in King County — we see this kind of variation on nearly every job. The difference usually comes down to overhead, materials markup, and whether the contractor is quoting for the specific materials you actually need.
In this case, the CertainTeed Presidential material requirement was a key factor. One contractor quoted without accounting for that material spec, then had to revise upward by $4,000 when they realized what was actually needed. This is exactly why we recommend getting at least three quotes on any roofing project. We covered this process in detail in how we compared three roofing quotes and saved a landlord $10,000.
Jason and the team handled the roof installation over several weeks in early March, logging progress daily. The roof work included:
Step 3: Patio Repair — The Small Job That Could Not Wait
The patio board replacement was the smallest scope item, but it still needed coordination. Yao from our team handled the logistics, checking with Yang Gao about matching the existing exterior paint color before the repair.
This is a detail that gets missed all the time on rental properties. A landlord hires someone to replace a rotted board, and the new wood sits there unpainted — or worse, painted the wrong color. It looks sloppy, and tenants notice.
We completed the patio repair at the end of January, actually before the mold and roof work got into full swing. The timing worked because this was a contained exterior task that did not conflict with the other trades.
For landlords dealing with exterior maintenance, our painting guide for rental properties covers how to handle paint matching and why exterior maintenance directly impacts rent potential.
The Secret Weapon: Daily Construction Logs
Here is what made this entire six-week project manageable: daily construction logs with photos.
Every day that our team was on site, Jason logged what was accomplished, what was coming next, and uploaded photos documenting the work. On a single day in early March, he logged 19 photos covering different aspects of the roof installation. On another day, 25 photos documenting the construction progress.
This system serves three purposes:
1. Landlord Communication Without Phone Tag
The property owner could check the project status anytime without calling us. No "what is happening with my property?" anxiety. No waiting for callbacks. Just open the log, see today's photos, and know exactly where things stand.
For out-of-state landlords especially, this is critical. You cannot drive by and check on the work yourself. Daily logs with photos are the next best thing to being there in person.
2. Contractor Accountability
When every day's work is photographed and logged, there is no ambiguity about what was done and when. If a subcontractor claims they completed something, we have the photos to verify. If there is a quality issue later, we can trace it back to exactly when that work was done.
3. Dispute Prevention
Documentation prevents disputes — with contractors, with tenants, and with insurance companies. We have had situations where having dated photos of work in progress saved a landlord thousands in disputed claims. When you can prove exactly what condition the property was in on a specific date, most arguments end quickly.
What This Project Cost — And What It Would Have Cost Without Coordination
Here is a rough breakdown of the project:
Trade
Cost
Mold remediation
~$3,000-4,000
Roof replacement (internal)
$12,750
Patio board repair
~$200-400
Total
~$16,000-17,000
If the landlord had hired three separate contractors with no coordination:
Scheduling conflicts would have added 2-4 weeks to the timeline
Rework costs from trades interfering with each other: easily $2,000-3,000
Communication overhead: hours of phone calls coordinating between contractors who do not talk to each other
Risk of sequencing errors: starting roof work before mold is fully remediated could require re-treatment ($3,000+ again)
Conservative estimate: uncoordinated management would have cost an additional $5,000-8,000 in delays, rework, and inefficiency. That does not even account for additional lost rental income from the extended timeline.
Lessons for Landlords Managing Multi-Trade Renovations
Whether you manage the project yourself or hire someone like us, here are the principles that make multi-trade renovations work:
Get the Sequence Right
Interior work before exterior. Containment work (like mold) before demolition work (like roof tear-off). Finishing work (like painting and patio) after heavy construction. Violating this sequence creates rework.
Collect Multiple Quotes — But Compare Apples to Apples
Our roofing quotes ranged from $12,750 to $22,852. But not all quotes were for the same scope and materials. Make sure every contractor is quoting for the exact same specifications. We have seen landlords pick the cheapest quote only to discover it did not include the materials they actually needed. Read our guide on prioritizing multiple rental repairs for more on managing competing repair needs.
Document Everything, Every Day
Photos with dates. Written logs of what was done. Records of conversations with contractors. This documentation costs almost nothing to maintain and can save you thousands in disputes.
Know When Repair Is Not Enough
The roof on this property could have been patched for $5,434. But the underlying condition meant that a patch would have lasted maybe two to three years before the same problems resurfaced. The full replacement at $12,750 was the right call economically — the cost per year of useful life was significantly lower. Our article on what deferred maintenance really costs King County landlords breaks down this math in detail.
Use One Point of Contact
Having one team coordinate all three trades eliminated the communication gaps that cause delays. The mold crew knew when they needed to be done so the roofers could start. The roofers knew the patio area needed to be clear for the final repair. Everyone worked from the same timeline because one team was managing the whole project.
When Your Rental Property Needs More Than One Fix
If you are a King County landlord staring at multiple repair needs on the same property, here is our recommendation:
Do not try to manage three separate contractors independently. The coordination cost — in time, stress, and rework — is almost always more than the premium you would pay for a single team to handle everything.
Our membership program is designed for exactly this situation. Members get priority scheduling, coordinated project management across trades, and daily documentation on every job. One point of contact, one team, one timeline.
For landlords dealing with seasonal maintenance across multiple properties, our spring maintenance checklist for King County is a good starting point for identifying what needs attention before small problems become multi-trade renovation projects.
Have a property that needs work across multiple trades? Call us at (425) 800-8268 or visit our contact page to schedule a property assessment. We will walk the property, identify everything that needs attention, sequence the work correctly, and give you one coordinated quote instead of three separate headaches.
Valta Homes provides property maintenance, renovation, and management services for rental property owners across King County, including roofing, mold remediation, plumbing, HVAC service, landscaping, painting, flooring, and gutter services. We manage projects from inspection through completion with daily documentation and transparent pricing.
