Paid Advertising
Seasonal and promotional campaign planning: spending ahead of demand
Contractors lose money chasing busy season after it starts. Map your demand curve, fund the run-up before the surge, and tell Smart Bidding what is coming instead of letting it guess.
If your booked jobs swing with the season, the worst move is to raise budgets once busy season is already underway and the phones are ringing. By then every other remodeler is bidding the same auction, your cost per click is high, and your campaigns are still relearning. Homeowners start their planning earlier than most contractors think: Gartner's 2024 survey found 32% of consumers plan to begin holiday shopping before November, and eMarketer data showed 34% had already started by July of that year. The same head start applies to a spring kitchen remodel a homeowner begins researching in January. The job is to read the demand curve, spend into the run-up, and signal the spike to your bidding so it does not misread a short surge.
Map the demand curve before you touch a budget
Seasonality is not a guess once you have data on it. Google Trends shows the shape of national interest for a term over a multi-year window, and the recurring peaks line up with predictable cycles: "deck builder near me" climbs ahead of spring, "home addition contractor" lifts as families plan summer projects, and "finish my basement" tends to rise in the cooler months when homeowners turn their attention indoors. Layer your own year-over-year account data on top, because national trends tell you the shape and your account tells you the timing and magnitude in your market and trade area.
Pull at least two prior years of weekly impressions, clicks, conversions, and cost from your own campaigns, then mark where volume and cost per lead start to move. The useful number is not the peak itself but the inflection: the week demand begins climbing. That is your starting line. Brands have been pulling their promotions earlier each year, and consumers have followed, so a curve that peaked in mid-November three years ago may now begin lifting in late September.
What to chart before each season:
- Google Trends for your core terms across three to five years to confirm the recurring shape
- Your own weekly conversions and cost per lead for the last two seasons, not blended monthly averages
- The inflection week when demand starts rising, not just the peak week
- How long the climb, peak, and decline each last, so you know how far ahead to fund
- Auction pressure: where your cost per click historically rises as competitors arrive
Budget up before the peak, not in the middle of it
The instinct is to wait for demand to prove itself, then add budget. That is backwards. By the time the peak is obvious, every competitor is bidding into the same auction, click costs are at their highest, and any new budget arrives late. Spending into the run-up captures the early, cheaper, high-intent demand and builds conversion history while the auction is still calm. With one in three holiday shoppers starting before November (Gartner, 2024), the customers you reach in the quiet weeks are not browsing, they are buying.
Set the increase against the inflection week you found, not the peak. A practical pattern is to begin raising budgets roughly four to six weeks before the historical peak for a major season, sooner for a remodeler, since a kitchen or addition needs a site visit, an estimate, and a signed bid before any work starts. Fund the climb, hold through the peak, and plan the taper for the back half so you are not still paying premium prices as demand falls off and your cost per lead climbs back up.
Tell Smart Bidding what is coming, do not let it guess
Smart Bidding sets bids on the predicted conversion rate of each auction, and it learns from recent history. That works against you at a seasonal turn, because the algorithm only sees the spike after it begins and then chases it as it fades. The fix is to loosen the reins ahead of the event. Raising your tCPA or tROAS targets, or moving to a more volume-oriented strategy during the run-up, lets the system bid into demand it cannot yet see in the data. A target that is correct in the off-season is too conservative the week demand doubles.
For short, sharp events, use Google's seasonality adjustments. You schedule an expected conversion-rate change so Smart Bidding bids appropriately from day one of a promotion instead of catching up halfway through. They work with Target CPA and Target ROAS on Search, Shopping, and Display, and with all strategies on Performance Max (Google Ads Help, 2025). The tool is built for short spikes, not whole seasons, which is the most common way owners misuse it.
Working with Smart Bidding around a season:
- Raise tCPA or loosen tROAS a few weeks before the peak so bids reach early demand
- Use seasonality adjustments only for events of one to seven days, never over fourteen
- Apply a positive adjustment for a flash sale; no negative adjustment is needed afterward, it resets automatically
- Avoid major target changes during the learning period right before a launch
- Return targets to baseline on a planned date as demand declines, not reactively
Do not let a short spike confuse the algorithm
A two-day promotion or a freak weather week can teach Smart Bidding the wrong lesson. If conversion rate triples for three days and you do nothing, the system may over-correct after the spike, bidding high on demand that has already passed. The point of a seasonality adjustment is to absorb that signal so the algorithm treats the spike as expected and temporary rather than as a new baseline it should keep chasing.
The opposite mistake is using the adjustment for an entire season. Google is explicit that the feature is ideal for short events of one to seven days and may not work well for periods longer than fourteen (Google Ads Help, 2025), because Smart Bidding already manages broad seasonality on its own. For a multi-week run-up, the right levers are budget and target changes, not a long conversion-rate override. Match the tool to the duration: adjustments for spikes, budget and target moves for seasons.
By the time the peak is obvious, the auction is crowded and your budget is late. Fund the run-up, not the rush.
Prep offers and creative against real lead times
The best demand curve does nothing if the offer and the landing experience are not ready when the climb begins. Promotional creative, seasonal landing pages, offer terms, and any disclaimers need to be built, approved, and live before the inflection week, not during it. Ad review, landing-page changes, and a fresh round of Smart Bidding learning all take time, and stacking them onto launch week guarantees you miss the cheap early demand.
Work back from the inflection week to set a prep deadline with real slack. Decide the offer, write and design the ads, build or update the landing pages, and load campaigns in a paused state ahead of time. With nearly three-quarters of holiday shoppers planning ahead and many researching weeks before they buy (Think with Google, 2024), the seasonal page they land on in the quiet weeks is doing the early convincing that wins the sale later.
A pre-season prep checklist:
- Lock the offer and any terms or expiry dates well before the climb starts
- Produce ad copy, extensions, and creative variants in time for ad review
- Build or refresh dedicated seasonal landing pages, not the homepage
- Stage campaigns and budgets paused, ready to enable on the planned date
- Confirm conversion tracking and offer codes fire correctly before launch
Capture demand you cannot fulfill yet
Seasonal businesses routinely hit a ceiling at the peak: every install slot is booked, every appointment is full, and new leads have nowhere to go. Turning those people away wastes the most expensive demand of the year. Instead, capture it. A waitlist, a priority-booking signup, or a deposit holds the customer and smooths your schedule into the shoulder weeks. The lead you cannot serve in week one becomes revenue in week three if you keep it.
Off-peak, the same logic runs in reverse. The quiet season is when acquisition is cheapest and competitors go dark, so it is the right time to build a nurture list, run maintenance and tune-up offers, and stay in front of past customers who will buy again at the next turn. Demand you capture in the trough and the overflow you waitlist at the peak both flatten the curve you are otherwise at the mercy of.
How WellBuilt plans seasonal campaigns
WellBuilt starts each seasonal account by building the demand curve from Google Trends and your own multi-year account data, then marking the inflection week that sets the schedule. We plan budget step-ups against that week rather than against the peak, so spend reaches the early, cheaper demand instead of chasing the crowd later. Targets and bidding strategy are mapped to the same calendar, loosened ahead of the climb and returned to baseline on a planned date.
For short promotions and flash events, we apply seasonality adjustments within Google's one-to-seven-day window and avoid stretching them across whole seasons, where budget and target moves do the work. Creative and landing pages are scheduled back from the inflection week with room for ad review and learning, and we build waitlist and off-season nurture paths so peak overflow and trough demand both get captured. It is a managed cadence of mapping, funding ahead, signaling the bidding, and measuring against last year, with no claim that any single season is guaranteed.
Key takeaways
- Build the demand curve from Google Trends and your own two-year data, and act on the inflection week, not the peak.
- Raise budgets four to six weeks before the historical peak to capture early, cheaper, high-intent demand.
- Loosen tCPA or tROAS ahead of the climb so Smart Bidding bids into demand it cannot yet see.
- Use seasonality adjustments only for one-to-seven-day events, never as a stand-in for a whole season.
- Prep offers and landing pages against real lead times, and capture overflow with waitlists and off-season nurture.
SourcesGoogle Ads Help, About seasonality adjustments (1–7 day ideal duration, over-14-day warning, supported campaign types and bid strategies, automatic reset), 2025 · Gartner Marketing Survey (32% of consumers plan to start holiday shopping before November; survey of 327 consumers), 2024 · eMarketer / Salsify holiday consumer research (34% had already started shopping by July; 74% plan ahead), 2024 · Think with Google, holiday consumer insights (early shopping behavior and research-before-purchase), 2024 · Google Trends, recurring seasonal demand patterns for HVAC, tax, and holiday terms, 2024–2025 · Search Engine Land, SEO seasonality and 4–6 week pre-peak launch guidance, 2024
Questions, answered straight.
How far ahead of a seasonal peak should I raise my budget?
Tie the increase to the week demand starts climbing, not the peak itself. A common pattern is to begin raising budgets four to six weeks before the historical peak for a major season, and sooner if your business needs a quote, a visit, or a booking with lead time. Use your own year-over-year data to find that inflection week, since it tends to move earlier each year as brands pull promotions forward.
What are Google Ads seasonality adjustments and when should I use them?
They let you tell Smart Bidding to expect a conversion-rate change for a specific event, so it bids correctly from day one instead of catching up. Google says they are ideal for short events of one to seven days and may not work well beyond fourteen, because Smart Bidding already handles broad seasonality. Use them for flash sales and short promotions; use budget and target changes for multi-week seasons.
Will Smart Bidding handle seasonality on its own?
It manages broad, recurring seasonality, but it learns from recent history, so it sees a sharp spike only after it begins and can over-correct as it fades. For predictable annual swings, raise budgets and loosen targets ahead of the climb. For short, sharp events, add a seasonality adjustment so the system treats the spike as expected rather than as a new baseline to chase.
What do I do with leads I can't fulfill at the peak?
Capture them instead of turning them away, since busy-season leads are the most expensive demand of the year. Use a waitlist, priority booking, or a deposit to hold the homeowner and push work into your slower weeks. In the slow season, run the same list as a nurture channel, because acquisition is cheapest when other contractors go quiet.
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