(Sharecast News) - FTSE 250 housebuilder Bellway said on Wednesday that it has broken through the 10,000 homes barrier for the first time as it reported a jump in full-year revenue and highlighted "favourable" trading conditions, but warned over slowing house price growth.In an update for the year to the end of July, the company said completions of new residential dwellings rose 6.9% from 2017 to 10,307, while revenue was up 16% to almost £3bn. The reservation rate increased 7% to 200 per week and the group had net cash of £99m versus £16m the year before.As at 31 July, the forward order book comprised 4,841 homes, up from 4,749 in 2017, with a value of £1.3bn, up a touch from £1.29bn.The proportion of private completions rose to 80% of the total compared to 78% the year before, boosting the overall average selling price, which rose 9.4% to a new high of £284,900. The group said it expects further, more moderate growth in the average selling price in the year ahead.As previously reported, the full-year operating margin is expected slip to around 22% from 22.3% in 2017, as house price growth has eased. Still, Bellway said that together with the rise in revenue this should result in substantial full-year earnings growth.The group said the rate of house price inflation has moderated as the year has progressed, while higher value homes across the country have, at times, experienced slower sales rates and occasionally required a greater use of incentives. However, Bellway said it has intentionally limited its exposure at this upper end of the market.Chief executive Jason Honeyman said: "Bellway has responded positively to the favourable market conditions, completing the sale of over 10,000 new homes for the first time in its history, whilst retaining a clear focus on quality and customer care."In doing so, the group has set a new earnings record and yet, having invested significantly in land, has ended the year with a strong net cash position. Trading has been robust and notwithstanding wider political and economic uncertainty in the UK, Bellway has both the financial and operational strength to respond opportunistically to future changes in market conditions."Bellway said there remains an underlying requirement for additional, good quality and affordably priced new housing, supported by the Help to Buy scheme and low interest rates.